Re: [dmidecode] Getting the speed of RAM using dmidecode

[Mark Ryden]

Jeans,

First - thanks a lot! it worked ! Great !

Second:
it gave me :
2 banks:
Fundamental Memory type in both is DDR2 SDRAM

on one bank:
Maximum module speed                            666MHz (PC2-5300)

and on the second:
Maximum module speed                            400MHz (PC2-3200)

So I guess my PC is working with the lowest speed (400 Mhz) for both
RAM sticks (and I should consider upgrading).

Another thing which occurred to me after running this:
what is (PC2-5300) in first bank and (PC2-3200) in the second ? does
this has anything to do with speed?

Rgs,
Mark






On Tue, Jan 20, 2009 at 10:55 PM, Jean Delvare <address@hidden> wrote:
> Hi Mark,
>
> On Tue, 20 Jan 2009 17:11:51 +0200, Mark Ryden wrote:
>> Hello,
>>         I have a couple of machines on which there are various
>>         fedora distros (F10, F9 and  F8) and redhat enterprise distros.
>>         On some of them lm_sensors run, on some lm_sensors does not run.
>
> Not sure why you mention lm_sensors at this point?
>
>>         I try to get the speed of the RAM using dmidecode but I can't. I do
>>         get other helpful about the RAM (like size, type, etc). but the speed
>>         entry shows: "Current Speed: Unknown". I had heard from other
>>         people that
>>         on their machines dmidecode **does** show the RAM Speed. I must add 
>> that
>>         these machines are x86_64 based, and some of them are really brand 
>> new.
>>         I know of course that I can get this info from BIOS (or open
>>         the case and
>>         look at the RAM sticks themselves) but I want to know why I
>>         cannot see this with dmidecode ?
>>
>>         I am using dmidecode-2.9-1.31.fc10.x86_64 (or lower version on the
>>         other machines).
>
> If you care about memory speed and don't want to depend on BIOS
> correctness, then dmidecode isn't the tool you need. What you want is
> the eeprom kernel driver together with the decode-dimms script from the
> i2c-tools package [1]. It only works on systems where the SPD EEPROM on
> the memory modules are exposed on the SMBus though.
>
> [1] http://www.lm-sensors.org/wiki/I2CTools
>
> --
> Jean Delvare
>