Checking RAM type and information in software

[Konstantin Svist]

Ian Chapman wrote:
> Konstantin Svist wrote:
>
>>> Yes, there's a few ways of checking, try dmidecode. Also lm_sensors 
>>> has some support for telling you about your memory through the 
>>> eeprom modules if I remember right.
>>>
>>
>> Thanks!
>> dmidecode displays a bunch of useful info, although the manufacturer 
>> is listed as ID only (is there a convenient database of these things? 
>> or do I have to JFGI every time?)
>
> I think it many cases the manufacturer field is pretty arbitrary as a 
> lot of the fields are, so I wouldn't rely on that information entirely.
>
>> I don't see any latency information, though. Is that available 
>> through anything?
>
> Yes there's decode-dimms.pl which is part of the aforementioned 
> lm_sensors package. Probably has a lot of what you're looking for. For 
> example for me it shows (amongst lots of other information):
>
> ---=== Memory Characteristics ===---
> Maximum module speed                            400MHz (PC3200)
> Size                                            512 MB
> tCL-tRCD-tRP-tRAS                               3-3-3-8
> Supported CAS Latencies                         3, 2.5
> Supported CS Latencies                          0
> Supported WE Latencies                          1
> Minimum Cycle Time (CAS 3)                      5 ns
> Maximum Access Time (CAS 3)                     0.65 ns
> Minimum Cycle Time (CAS 2.5)                    6 ns
> Maximum Access Time (CAS 2.5)                   0.7 ns
>
> ---=== Manufacturing Information ===---
> Manufacturer                                    Samsung
> Manufacturing Location Code                     0x01
> Part Number                                     M3 68L6423FTN-CCC
> Revision Code                                   0x4E46
> Manufacturing Date                              2004-W30
> Assembly Serial Number                          0x41004B71
>
>

For me, all it says is:

Memory Serial Presence Detect Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare and others
Version 2.10.2
No EEPROM found, are you sure the eeprom module is loaded?