Ubuntu

How can I find out why I only have 12MB of RAM free out of 256MB?

Asked by Not As needi newbi

After reboot i still only have 3MB of RAM free out of 256MB total. I don't know what is eating up all of my Free RAM. Some program must be running in the background that i can't find or ? I tried cleaning up my Browser [Firefox] [Ubuntu 6.06 Dapper i386] by clearing History, cache, cookies but only gained about 5 MB. I don't know where else to look. Some of my video programs are failing because of almost no RAM.
The system Info shows:

       Memory Info
           Total: 256MB
            Free: 12MB

       Cached: 84MB
        Active: 153MB
      Inactive: 60MB

       Swap Info: 248MB
          Free: 230MB

Question information

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Solved by:
Christoph Langner
Solved:
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Last reply:
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Best Christoph Langner (chrissss) said : 		#1

Don't confuse Linux with Windows. For what is free ram space good for? Nothing. Linux uses RAM. It can preload certain libraries etc. So don't be afraid. It's a good thing linux uses the RAM inside your computer. You should only be concerned when you run out of swap space or swap is heavily used...

CU, Christoph

Revision history for this message
Not As needi newbi (mango553) said : 		#2

Thanks Christoph Langner, that solved my question.

Revision history for this message
Paul Hoell (hoellp) said : 		#3

Just an addition:
If you can afford the diskspace, you should really consider resizing your swap. Generally you should have 1.5x you RAM, especially if you just have 256 like yourself.
I'd recommend about 512 so you won't get any problems with watching movies, opening/editing pics, etc.
I'm sure your PC'll run well as is, but there sure will be occasions when it's not enough.
Have Fun.
<-

Revision history for this message
Not As needi newbi (mango553) said : 		#4

Ok, i KNOW i don't have enuff RAM. I had a 40 GB HD when i got this comp and since then i've added an 80GB HD a 3200MB ext HD and an ext. DVD burner. How can i tell what the specs are on the RAM sticks that are in my comp without pulling them out?

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#5

Note that the amount of "free" memory is low not just because applications have used it. If there is free RAM then Linux will use some of it for caching to improve disk performance. When that RAM is needed by applications it is given up. Don't worry about the "free" value.

The dmidecode command will tell you what RAM you have:-

ALT+F2
gksudo dmidecode > ~/dmidecode.txt # save it to a file
ALT+F2
gedit ~/dmidecode.txt # open in a text editor

if you scroll down to the section about memory it should tell you. For example this is my laptop:-

This first section tells us the total RAM:-

Handle 0x0009, DMI type 5, 20 bytes
Memory Controller Information
 Error Detecting Method: None
 Error Correcting Capabilities:
  None
 Supported Interleave: Other
 Current Interleave: Other
 Maximum Memory Module Size: 2048 MB
 Maximum Total Memory Size: 4096 MB
 Supported Speeds:
  Other
 Supported Memory Types:
  Other
  DIMM
  SDRAM
 Memory Module Voltage: Unknown
 Associated Memory Slots: 2
  0x000A
  0x000B
 Enabled Error Correcting Capabilities:
  None

This is the first 1GiB stick:-

Handle 0x000A, DMI type 6, 12 bytes
Memory Module Information
 Socket Designation: SO-DIMM
 Bank Connections: 0 1
 Current Speed: 4 ns
 Type: Other DIMM SDRAM
 Installed Size: 1024 MB (Single-bank Connection)
 Enabled Size: 1024 MB (Single-bank Connection)
 Error Status: OK

This is the second 1GiB stick:-

Handle 0x000B, DMI type 6, 12 bytes
Memory Module Information
 Socket Designation: SO-DIMM
 Bank Connections: 2 3
 Current Speed: 4 ns
 Type: Other DIMM SDRAM
 Installed Size: 1024 MB (Single-bank Connection)
 Enabled Size: 1024 MB (Single-bank Connection)
 Error Status: OK

Revision history for this message
Not As needi newbi (mango553) said : 		#6

ok, i got a lot of info but i'm just cutting out what i think is necessary. If you want me to copy all of the info here pls let me know.:

Handle 0x0007, DMI type 5, 24 bytes.
Memory Controller Information
 Error Detecting Method: 32-bit ECC
 Error Correcting Capabilities:
  Single-bit Error Correcting
 Supported Interleave: One-way Interleave
 Current Interleave: One-way Interleave
 Maximum Memory Module Size: 512 MB
 Maximum Total Memory Size: 2048 MB
 Supported Speeds:
  Other
  50 ns
 Supported Memory Types:
  Other
  ECC
 Memory Module Voltage: 3.3 V
 Associated Memory Slots: 4
  0x0008
  0x0009
  0x000A
  0x000B
 Enabled Error Correcting Capabilities:
  Single-bit Error Correcting

Handle 0x0008, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J7J1
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J7J2
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x000A, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J8J1
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x000B, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J8J2
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#7

Ok, so from that you have 4 slots with 64MiB in each one, totalling 256MiB.

Each slot can take a maximum of 512MiB, totalling 2048MiB (2GiB).

So if you wanted to upgrade the memory you'd need to take out what you have in there and replace with something else.You could for example get one 512MiB if money is an issue, and then perhaps add more 512MiB sticks as money becomes available.

512MiB would leave the machine a lot more useful. More would of course be great, but for most standard desktop users 1GiB should be "enough" - of course it depends entirely what you do with the machine.

Revision history for this message
Not As needi newbi (mango553) said : 		#8

ok, so i go to the store and i say i want 1 or 2 512MB memory sticks for my comp. What specs do i tell them they must be? What speed etc?

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#9

It doesn't seem like your motherboard is telling dmidecode what kind of slots they are. I could take a guess but I would rather not, in case it's wrong.

Easiest thing to do would be to switch the machine off, pop the lid off, and take one of the sticks with you to the store.

Alternatively visit http://crucial.com/uk (or another region) and find your computer (or motherboard) make and model there, it will tell you what type of memory to use.

Revision history for this message
Not As needi newbi (mango553) said : 		#10

ok, let me give u all the info i got and see if any of it is in there:

# dmidecode 2.7
SMBIOS 2.3 present.
61 structures occupying 2122 bytes.
Table at 0x000F0E90.

Handle 0x0000, DMI type 0, 20 bytes.
BIOS Information
 Vendor: Intel Corp.
 Version: GB85010A.86A.0053.P08.0101301052
 Release Date: 01/30/2001
 Address: 0xF0000
 Runtime Size: 64 kB
 ROM Size: 512 kB
 Characteristics:
  PCI is supported
  PNP is supported
  APM is supported
  BIOS is upgradeable
  BIOS shadowing is allowed
  ESCD support is available
  Boot from CD is supported
  Selectable boot is supported
  EDD is supported
  Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
  Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
  5.25"/360 KB floppy services are supported (int 13h)
  5.25"/1.2 MB floppy services are supported (int 13h)
  3.5"/720 KB floppy services are supported (int 13h)
  3.5"/2.88 MB floppy services are supported (int 13h)
  Print screen service is supported (int 5h)
  8042 keyboard services are supported (int 9h)
  Serial services are supported (int 14h)
  Printer services are supported (int 17h)
  CGA/mono video services are supported (int 10h)
  ACPI is supported
  USB legacy is supported
  AGP is supported
  LS-120 boot is supported
  ATAPI Zip drive boot is supported
  BIOS boot specification is supported

Handle 0x0001, DMI type 1, 25 bytes.
System Information
 Manufacturer: ALIENWARE CORPORATION
 Product Name: CUSTOM SYSTEMS
 Version: 2001
 Serial Number: D
 UUID: 65D1E04C-E130-11D4-AF11-0030D3005E53
 Wake-up Type: Power Switch

Handle 0x0002, DMI type 2, 8 bytes.
Base Board Information
 Manufacturer: Intel Corporation
 Product Name: D850GB
 Version: AAA22917-307
 Serial Number: IMGB10103903

Handle 0x0003, DMI type 3, 17 bytes.
Chassis Information
 Manufacturer:
 Type: Unknown
 Lock: Not Present
 Version:
 Serial Number:
 Asset Tag: E
 Boot-up State: Unknown
 Power Supply State: Unknown
 Thermal State: Unknown
 Security Status: Unknown
 OEM Information: 0x00000000

Handle 0x0004, DMI type 4, 32 bytes.
Processor Information
 Socket Designation: J4K2
 Type: Central Processor
 Family: Pentium 4
 Manufacturer: Intel Corporation
 ID: 07 0F 00 00 FF FB EB 3F
 Signature: Type 0, Family 15, Model 0, Stepping 7
 Flags:
  FPU (Floating-point unit on-chip)
  VME (Virtual mode extension)
  DE (Debugging extension)
  PSE (Page size extension)
  TSC (Time stamp counter)
  MSR (Model specific registers)
  PAE (Physical address extension)
  MCE (Machine check exception)
  CX8 (CMPXCHG8 instruction supported)
  APIC (On-chip APIC hardware supported)
  SEP (Fast system call)
  MTRR (Memory type range registers)
  PGE (Page global enable)
  MCA (Machine check architecture)
  CMOV (Conditional move instruction supported)
  PAT (Page attribute table)
  PSE-36 (36-bit page size extension)
  CLFSH (CLFLUSH instruction supported)
  DS (Debug store)
  ACPI (ACPI supported)
  MMX (MMX technology supported)
  FXSR (Fast floating-point save and restore)
  SSE (Streaming SIMD extensions)
  SSE2 (Streaming SIMD extensions 2)
  SS (Self-snoop)
  HTT (Hyper-threading technology)
  TM (Thermal monitor supported)
 Version: Pentium(R) 4
 Voltage: 3.0 V
 External Clock: 100 MHz
 Max Speed: 1300 MHz
 Current Speed: 1300 MHz
 Status: Populated, Enabled
 Upgrade: ZIF Socket
 L1 Cache Handle: 0x0005
 L2 Cache Handle: 0x0006
 L3 Cache Handle: Not Provided

Handle 0x0005, DMI type 7, 19 bytes.
Cache Information
 Socket Designation: None
 Configuration: Enabled, Not Socketed, Level 1
 Operational Mode: Write Back
 Location: Internal
 Installed Size: 8 KB
 Maximum Size: 8 KB
 Supported SRAM Types:
  Pipeline Burst
  Synchronous
 Installed SRAM Type: Pipeline Burst Synchronous
 Speed: 40 ns
 Error Correction Type: Single-bit ECC
 System Type: Data
 Associativity: Other

Handle 0x0006, DMI type 7, 19 bytes.
Cache Information
 Socket Designation: None
 Configuration: Enabled, Not Socketed, Level 2
 Operational Mode: Write Back
 Location: Internal
 Installed Size: 256 KB
 Maximum Size: 256 KB
 Supported SRAM Types:
  Pipeline Burst
  Synchronous
 Installed SRAM Type: Synchronous
 Speed: Unknown
 Error Correction Type: Parity
 System Type: Unified
 Associativity: Other

Handle 0x0007, DMI type 5, 24 bytes.
Memory Controller Information
 Error Detecting Method: 32-bit ECC
 Error Correcting Capabilities:
  Single-bit Error Correcting
 Supported Interleave: One-way Interleave
 Current Interleave: One-way Interleave
 Maximum Memory Module Size: 512 MB
 Maximum Total Memory Size: 2048 MB
 Supported Speeds:
  Other
  50 ns
 Supported Memory Types:
  Other
  ECC
 Memory Module Voltage: 3.3 V
 Associated Memory Slots: 4
  0x0008
  0x0009
  0x000A
  0x000B
 Enabled Error Correcting Capabilities:
  Single-bit Error Correcting

Handle 0x0008, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J7J1
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J7J2
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x000A, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J8J1
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x000B, DMI type 6, 12 bytes.
Memory Module Information
 Socket Designation: J8J2
 Bank Connections: 0 0
 Current Speed: Unknown
 Type: Other
 Installed Size: 64 MB (Single-bank Connection)
 Enabled Size: 64 MB (Single-bank Connection)
 Error Status: OK

Handle 0x000C, DMI type 9, 13 bytes.
System Slot Information
 Designation: J4E1
 Type: 32-bit PCI
 Current Usage: Available
 Length: Long
 ID: 1
 Characteristics:
  3.3 V is provided
  PME signal is supported

Handle 0x000D, DMI type 9, 13 bytes.
System Slot Information
 Designation: J4D1
 Type: 32-bit PCI
 Current Usage: In Use
 Length: Long
 ID: 2
 Characteristics:
  3.3 V is provided
  PME signal is supported
  SMBus signal is supported

Handle 0x000E, DMI type 9, 13 bytes.
System Slot Information
 Designation: J4C1
 Type: 32-bit PCI
 Current Usage: In Use
 Length: Long
 ID: 3
 Characteristics:
  3.3 V is provided
  PME signal is supported

Handle 0x000F, DMI type 9, 13 bytes.
System Slot Information
 Designation: J4B1
 Type: 32-bit PCI
 Current Usage: In Use
 Length: Long
 ID: 4
 Characteristics:
  3.3 V is provided
  PME signal is supported

Handle 0x0010, DMI type 9, 13 bytes.
System Slot Information
 Designation: J4A1
 Type: 32-bit PCI
 Current Usage: In Use
 Length: Long
 ID: 5
 Characteristics:
  3.3 V is provided
  PME signal is supported

Handle 0x0011, DMI type 9, 13 bytes.
System Slot Information
 Designation: J5E1
 Type: 32-bit AGP 4x
 Current Usage: In Use
 Length: Long
 ID: 5
 Characteristics:
  5.0 V is provided
  Opening is shared

Handle 0x0012, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1L1
 Internal Connector Type: None
 External Reference Designator: USB1
 External Connector Type: Access Bus (USB)
 Port Type: USB

Handle 0x0013, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1L1
 Internal Connector Type: None
 External Reference Designator: USB2
 External Connector Type: Access Bus (USB)
 Port Type: USB

Handle 0x0014, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1K1
 Internal Connector Type: None
 External Reference Designator: COM A
 External Connector Type: DB-9 female
 Port Type: Serial Port 16550A Compatible

Handle 0x0015, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1J2
 Internal Connector Type: None
 External Reference Designator: LPT1
 External Connector Type: DB-25 male
 Port Type: Parallel Port ECP/EPP

Handle 0x0016, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1M1
 Internal Connector Type: None
 External Reference Designator: Keyboard
 External Connector Type: PS/2
 Port Type: Keyboard Port

Handle 0x0017, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1M1
 Internal Connector Type: None
 External Reference Designator: PS2Mouse
 External Connector Type: PS/2
 Port Type: Mouse Port

Handle 0x0018, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: JA1H1
 Internal Connector Type: None
 External Reference Designator: LAN
 External Connector Type: RJ-45
 Port Type: Network Port

Handle 0x0019, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1F3 - VIDEO INTERFACE PORT
 Internal Connector Type: Other
 External Reference Designator: None
 External Connector Type: None
 Port Type: Video Port

Handle 0x001A, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1G1
 Internal Connector Type: None
 External Reference Designator: Audio Mic In
 External Connector Type: Mini Jack (headphones)
 Port Type: Audio Port

Handle 0x001B, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1G1
 Internal Connector Type: None
 External Reference Designator: Audio Line In
 External Connector Type: Mini Jack (headphones)
 Port Type: Audio Port

Handle 0x001C, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J1G1
 Internal Connector Type: None
 External Reference Designator: Audio Line Out
 External Connector Type: Mini Jack (headphones)
 Port Type: Audio Port

Handle 0x001D, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J10C1
 Internal Connector Type: Other
 External Reference Designator: USB Front Panel
 External Connector Type: None
 Port Type: Other

Handle 0x001E, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J10G1 - Floppy
 Internal Connector Type: On Board Floppy
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x001F, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J9G2 - PRI IDE
 Internal Connector Type: On Board IDE
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0020, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J9G1 - SEC IDE
 Internal Connector Type: On Board IDE
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0021, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J2D1 - CDIN
 Internal Connector Type: On Board Sound Input From CD-ROM
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Audio Port

Handle 0x0022, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J2C2 - Telephony IN
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Audio Port

Handle 0x0023, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J2C1 - AUX IN
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Audio Port

Handle 0x0024, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J8C1 - Wake On Ring
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0025, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J7C1 - Wake On LAN
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0026, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J7A2 - SCSI LED
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0027, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J9D2 - Control Panel
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0028, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J7M2 - Power Supply Fan
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x0029, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J6M1 - CPU Fan
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x002A, DMI type 8, 9 bytes.
Port Connector Information
 Internal Reference Designator: J8C2 - Configuration Jumper
 Internal Connector Type: Other
 External Reference Designator: Not Specified
 External Connector Type: None
 Port Type: Other

Handle 0x002B, DMI type 12, 5 bytes.
System Configuration Options
 Option 1: J8C2 Jumper Pins 1-2 Normal Mode
 Option 2: J8C2 Jumper Pins 2-3 Configuration Mode
 Option 3: J8C2 No Jumper Recovery Mode

Handle 0x002C, DMI type 13, 22 bytes.
BIOS Language Information
 Installable Languages: 13
  enUS
  deDE
  frFR
  ptBR
  esES
  enUK
  svSE
  fiFI
  noNO
  frCA
  enAU
  daDK
  nlNL
 Currently Installed Language: Not Specified

Handle 0x002D, DMI type 15, 33 bytes.
System Event Log
 Area Length: 4096 bytes
 Header Start Offset: 0x0000
 Header Length: 16 bytes
 Data Start Offset: 0x0010
 Access Method: Memory-mapped physical 32-bit address
 Access Address: 0xFFFDEF00
 Status: Valid, Not Full
 Change Token: 0x00000000
 Header Format: Type 1
 Supported Log Type Descriptors: 5
 Descriptor 1: POST error
 Data Format 1: POST results bitmap
 Descriptor 2: Parity memory error
 Data Format 2: Multiple-event
 Descriptor 3: I/O channel block
 Data Format 3: Multiple-event
 Descriptor 4: Single-bit ECC memory error
 Data Format 4: Multiple-event
 Descriptor 5: Multi-bit ECC memory error
 Data Format 5: Multiple-event

Handle 0x002E, DMI type 31, 28 bytes.
Boot Integrity Services Entry Point

Handle 0x002F, DMI type 18, 23 bytes.
32-bit Memory Error Information
 Type: Unknown
 Granularity: Unknown
 Operation: Unknown
 Vendor Syndrome: Unknown
 Memory Array Address: Unknown
 Device Address: Unknown
 Resolution: Unknown

Handle 0x0030, DMI type 16, 15 bytes.
Physical Memory Array
 Location: System Board Or Motherboard
 Use: System Memory
 Error Correction Type: Single-bit ECC
 Maximum Capacity: 2 GB
 Error Information Handle: 0x0031
 Number Of Devices: 4

Handle 0x0031, DMI type 19, 15 bytes.
Memory Array Mapped Address
 Starting Address: 0x00000000000
 Ending Address: 0x0000FFFFFFF
 Range Size: 256 MB
 Physical Array Handle: 0x0030
 Partition Width: 0

Handle 0x0032, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM
 Set: 3
 Locator: J7J1
 Bank Locator: RIMM1
 Type: Other
 Type Detail: RAMBus
 Speed: 400 MHz (2.5 ns)

Handle 0x0033, DMI type 20, 19 bytes.
Memory Device Mapped Address
 Starting Address: 0x00000000000
 Ending Address: 0x00003FFFFFF
 Range Size: 64 MB
 Physical Device Handle: 0x0032
 Memory Array Mapped Address Handle: 0x0031
 Partition Row Position: 1

Handle 0x0034, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM
 Set: 3
 Locator: J7J2
 Bank Locator: RIMM2
 Type: Other
 Type Detail: RAMBus
 Speed: 400 MHz (2.5 ns)

Handle 0x0035, DMI type 20, 19 bytes.
Memory Device Mapped Address
 Starting Address: 0x00004000000
 Ending Address: 0x00007FFFFFF
 Range Size: 64 MB
 Physical Device Handle: 0x0034
 Memory Array Mapped Address Handle: 0x0031
 Partition Row Position: 1

Handle 0x0036, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM
 Set: 3
 Locator: J8J1
 Bank Locator: RIMM3
 Type: Other
 Type Detail: RAMBus
 Speed: 400 MHz (2.5 ns)

Handle 0x0037, DMI type 20, 19 bytes.
Memory Device Mapped Address
 Starting Address: 0x00008000000
 Ending Address: 0x0000BFFFFFF
 Range Size: 64 MB
 Physical Device Handle: 0x0036
 Memory Array Mapped Address Handle: 0x0031
 Partition Row Position: 1

Handle 0x0038, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM
 Set: 3
 Locator: J8J2
 Bank Locator: RIMM4
 Type: Other
 Type Detail: RAMBus
 Speed: 400 MHz (2.5 ns)

Handle 0x0039, DMI type 20, 19 bytes.
Memory Device Mapped Address
 Starting Address: 0x0000C000000
 Ending Address: 0x0000FFFFFFF
 Range Size: 64 MB
 Physical Device Handle: 0x0038
 Memory Array Mapped Address Handle: 0x0031
 Partition Row Position: 1

Handle 0x003A, DMI type 32, 20 bytes.
System Boot Information
 Status: No errors detected

Handle 0x003B, DMI type 130, 12 bytes.
OEM-specific Type
 Header and Data:
  82 0C 3B 00 01 01 02 01 00 01 08 01
 Strings:
  Alert on LAN
  Intel_ICH2

Handle 0x003C, DMI type 127, 4 bytes.
End Of Table

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#11

According to that it's an Intel D850GB:-

Handle 0x0002, DMI type 2, 8 bytes.
Base Board Information
 Manufacturer: Intel Corporation
 Product Name: D850GB
 Version: AAA22917-307
 Serial Number: IMGB10103903

Here's the parts crucial sell.

http://www.crucial.com/uk/store/listparts.aspx?model=D850GB

Note: This is not an official endorsement of crucial. I just use their memory finder tool to see what types of memory machines require *

* That said, I do personally buy all my memory from them :)

Revision history for this message
Not As needi newbi (mango553) said : 		#12

Crucial is talking about max system use mostly about Windows and very little info on Linux. all i could find is this:

# Red Hat Linux 2.4 kernel: 64GB Like i have Ubuntu 6.06 Dapper i386.
Are you sure my system can use say 4 GB [1 GB in each DIMM]?

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#13

By default the maximum memory the standard kernel Ubuntu ships with will support a maximum of 4GiB of memory, yes.

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#14

Hmm, not very well worded :)

Yes, ubuntu supports 4GB of memory :)

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#15

Your machine "only" supports 2GiB though.

Revision history for this message
Not As needi newbi (mango553) said : 		#16

i'm trying to understand these different measurements: MB Mb MiB
 & GB Gb GiB?

Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) said : 		#17

b = bit
B = Byte (8 bits)
KB = KiloByte = 1000 Bytes
KiB = KibiByte = 1024 Bytes
MB = MegaByte = 1000 x 1000 Bytes = 1000000 Bytes
MiB = MebiByte = 1024 x 1024 Bytes = 1048576 Bytes

And so on..

If you buy a disk the capacity is generally measured in decimal MB/GB (1000x) whereas memory is specified in MiB/GiB (1024x). Unfortunately some people use the wrong term.

This page explains it:-

http://en.wikipedia.org/wiki/Binary_prefix

Revision history for this message
Not As needi newbi (mango553) said : 		#18

ok, thanx, i must sleep now it's 5 a.m. here. bye.

Revision history for this message
umesh (umeshpabhu) said : 		#19

Hi

Could someone guide me what is the maximum RAM support for Ubuntu Feisty -32 bit and 64bit.
or any specific kernel that could be used to enable 64Gb of RAM.
Have hone through this thread found a quite useful info waiting for the response.

Thanks,
Umesh

Revision history for this message
Julio Wong (juliowong) said : 		#20

Hi... I found this for your system

System Memory Features
The Intel® Desktop Board D850GB has four RIMM sockets (two sockets for each channel) and supports the following memory features:
* Single- or double-sided RIMM configurations
* (continues...)
More info about your System Board then take a look here:
http://support.intel.com/support/motherboards/desktop/d850gb/sb/cs-013246.htm

On the information you provided you will see:
Handle 0x0032, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM <--- *****HERE***** use this to ask for the memory.
 Set: 3
 Locator: J7J1
 Bank Locator: RIMM1
 Type: Other
 Type Detail: RAMBus <--- *****HERE***** use this to ask for the memory.
 Speed: 400 MHz (2.5 ns) <--- *****HERE***** use this to ask for the memory.

On this motherboard RAMBUS should be installed in pairs.

Good Luck!!!

Revision history for this message
Not As needi newbi (mango553) said : 		#21

Hi Julio, thanx for ur imput. I got a pair of 1 GB RAM sticks and left
the other 2 64 MB sticks and all runs fine now.

Thanx. Brian

Your question #7324 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/7324

Julio Wong posted a new comment:
Hi... I found this for your system

System Memory Features
The Intel® Desktop Board D850GB has four RIMM sockets (two sockets for each channel) and supports the following memory features:
* Single- or double-sided RIMM configurations
* (continues...)
More info about your System Board then take a look here:
http://support.intel.com/support/motherboards/desktop/d850gb/sb/cs-013246.htm

On the information you provided you will see:
Handle 0x0032, DMI type 17, 23 bytes.
Memory Device
 Array Handle: 0x0030
 Error Information Handle: 0x002F
 Total Width: 16 bits
 Data Width: 16 bits
 Size: 64 MB
 Form Factor: RIMM <--- *****HERE***** use this to ask for the memory.
 Set: 3
 Locator: J7J1
 Bank Locator: RIMM1
 Type: Other
 Type Detail: RAMBus <--- *****HERE***** use this to ask for the memory.
 Speed: 400 MHz (2.5 ns) <--- *****HERE***** use this to ask for the memory.

On this motherboard RAMBUS should be installed in pairs.

Good Luck!!!

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