Re: Checking RAM type and information in software

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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?


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