info ram frequency on n110

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gettons
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Posts: 2
Joined: 05/06/2009, 19:00

info ram frequency on n110

Postby gettons » 05/06/2009, 19:23

Hi folks,

I've bought a N100 days ago and I 've installed a 2gb module 667mhz to replace the samsung 1gb shipped with that.
I noticed that the samsung module is SN M470T2864QZ3-CF7 ( 1gb pc2-6400s ), so 800mhz frequency.
I did not know about this until today, I mean I did not know the pcb could support until 800mhz ram.
The 2gb module I bought is a 2GB DDR2 667MHz/PC2 5300 SODIMM corsair and it is well recognized by the OS :

root@gettons-laptop:~# free -m
total used free shared buffers cached
Mem: 2004 336 1668 0 13 157
-/+ buffers/cache: 165 1839
Swap: 1027 0 1027


The strange thing is the following:

Running an lshw -html this is an excerpt:


1gb module by samsung ( 800mhz )

id:
memory
description: System Memory
physical id:
e
slot: System board or motherboard
size: 1GiB
capacity: 2GiB
id:
bank:0
description: SODIMM Synchronous 533 MHz (1.9 ns)
product: SODIMM000
vendor: Mfg 0
physical id:
0
serial: 1234-B0
slot: M1
size: 1GiB
width: 64 bits
clock: 533MHz (1.9ns)
id:
bank:1
description: SODIMM Synchronous 533 MHz (1.9 ns) [empty]
product: SODIMM001
vendor: Mfg 1
physical id:
1
serial: 1234-B1
slot: M2
clock: 533MHz (1.9ns)



2gb corsair module
id:
memory
description: System Memory
physical id:
e
slot: System board or motherboard
size: 2GiB
capacity: 2GiB
id:
bank:0
description: SODIMM Synchronous 533 MHz (1.9 ns)
product: SODIMM000
vendor: Mfg 0
physical id:
0
serial: 1234-B0
slot: M1
size: 2GiB
width: 64 bits
clock: 533MHz (1.9ns)
id:
bank:1
description: SODIMM Synchronous 533 MHz (1.9 ns) [empty]
product: SODIMM001
vendor: Mfg 1
physical id:
1
serial: 1234-B1
slot: M2
clock: 533MHz (1.9ns)



Is this funny or not?
However, how do I check the real speed of the ram by the OS and BIOS point of view?
In the Bios page there is any detail about the frequency, but I am pretty interested about Gnu/Linux Ubuntu.

According to According to http://en.wikipedia.org/wiki/DDR2_SDRAM

533mhz should be DDR2-1066

that is very strange indeed.

Windows with cpu-z :

pc2-5300 ( 333mhz ) that is ok when I use the 2gb module
Last edited by gettons on 05/06/2009, 19:47, edited 1 time in total.

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