RAM compatibility

ihero · 4 Jun 2011 at 16:27

Would DDR2 PC2-6400 800mhz 2 x 2gb be ok on my mobo, ASUS P5Q-AM? I tried 2gb of DDR2 PC2-5300 667mhz the other day and got black screen with no beeps :|
Brand is Kingston btw

Surveyor · 4 Jun 2011 at 17:19

Is that the P5QPL-AM?

There's no reason why the 800MHz RAM wouldn't work.

But then again the 667MHz RAM should work as well.

Either the 667MHz RAM was faulty or you have other issues.

What were you using before you tried the 667MHz RAM?

spleenharvester · 4 Jun 2011 at 17:21

IIRC some of the earlier Asus P5Q boards had RAM issues, but I can't remember if it was confined to one model or not. You'll have to check the Asus QVL.

http://uk.asus.com/Motherboards/Intel_Socket_775/P5QPLAM/#MSL If it's the P5QPL AM

http://www.asus.com/Motherboards/Intel_Socket_775/P5QEM/#MSL If it's the P5Q EM

ihero · 4 Jun 2011 at 17:54

Surveyor said:
Is that the P5QPL-AM?

There's no reason why the 800MHz RAM wouldn't work.

But then again the 667MHz RAM should work as well.

Either the 667MHz RAM was faulty or you have other issues.

What were you using before you tried the 667MHz RAM?

I had a 2gb ddr2 333mhz before the 667mhz, i swapped the sticks around and tried them on their own but as long as the 667mhz was there it wouldnt work, even on its own.

And yep its the P5QPL-AM my bad

ihero · 4 Jun 2011 at 17:56

spleenharvester said:
IIRC some of the earlier Asus P5Q boards had RAM issues, but I can't remember if it was confined to one model or not. You'll have to check the Asus QVL.

http://uk.asus.com/Motherboards/Intel_Socket_775/P5QPLAM/#MSL If it's the P5QPL AM

http://www.asus.com/Motherboards/Intel_Socket_775/P5QEM/#MSL If it's the P5Q EM

Its the first link you sent, P5QPL-AM and its like less than a month out of its packaging

spleenharvester · 4 Jun 2011 at 17:56

ihero said:
I had a 2gb ddr2 333mhz before the 667mhz, i swapped the sticks around and tried them on their own but as long as the 667mhz was there it wouldnt work, even on its own.

And yep its the P5QPL-AM my bad

As above, check if it's on the QVL.

Surveyor · 4 Jun 2011 at 17:59

ihero said:
I had a 2gb ddr2 333mhz before the 667mhz, i swapped the sticks around and tried them on their own but as long as the 667mhz was there it wouldnt work, even on its own.

And yep its the P5QPL-AM my bad

I wasn't aware that there was such a thing as 333MHz DDR2.

667MHz DDR2 runs at 333MHz and this is doubled (Double Data Rate).

ihero · 4 Jun 2011 at 18:10

spleenharvester said:
As above, check if it's on the QVL.

cheers buddy il have a look when i get home tonight

ihero · 4 Jun 2011 at 18:14

Surveyor said:
I wasn't aware that there was such a thing as 333MHz DDR2.

667MHz DDR2 runs at 333MHz and this is doubled (Double Data Rate).

Im probably wrong, i dont know much about this stuff but it is an old stick so i dont have the packaging and it was showing 333.4MHz on CPU-Z. I sort of get what your saying but shouldn't it show 557 on CPU-Z?

spleenharvester · 4 Jun 2011 at 18:23

It'll only show 333 on CPU-Z mate, but as Surveyor said, it's double data rate so will actually be 667.

ihero · 4 Jun 2011 at 18:28

spleenharvester said:
It'll only show 333 on CPU-Z mate, but as Surveyor said, it's double data rate so will actually be 667.

Ah ok so if i get 800MHz will it get halved too?

edit: btw i meant 667 in my last post, not 557

ihero · 4 Jun 2011 at 18:33

The stick that didnt work required 1.8v if that makes any difference :|

spleenharvester · 4 Jun 2011 at 18:46

1.8v is standard DDR2 voltage.

EDIT: Yeah 800 will be halved too.