Right Speed? Please Help?

RoEy · 14 Mar 2008 at 12:10

I've got two sticks of Corsair 2GB DDR2 XMS2-6400C5 TwinX (2x1GB) memory.

I've put them in an ASUS P5K PRO motherboard and I'm having problems. One minute the system is fine the next it crashes. I receievd my motherboard slightly warped and I'm wondering if its that causing the problem, a sort of intermittent fault. I ran orthos and it crashed after 32mins, then 3 mins, then at desktop and then wouldnt post.

I took one stick out then ran orthos, it ran without any errors for 6 hours! So I shut it down and went to bed. Then I go to turn it on and it gets to the windows loading bit, then after that goes blank - nothing comes on. I check the BIOS, didnt change anything and come out of it and it loads. I'm now testing it again. What could be causing this?

What my question is, is I've loaded CPU-z and on the memory section it says the DRAM frequency is 400hz, and the voltage is 1.8 surely thats wrong and should say 800hz as that's what the memory runs at. I've checked in the BIOS and its set to AUTO. Is the bios not picking the full speed up?

Hope someone can help, pulling my hair out...

RoEy

Darryl_1983 · 14 Mar 2008 at 12:48

its ddr2 memory therefore the 400mhz shown is cpu-z is infact doubled to get the true speed of 800mhz.

You might want to try increasing the voltage to the memory slightly this should help, also maybe add 0.1v to the northbridge voltage.

RoEy · 14 Mar 2008 at 13:43

Darryl_1983 said:
its ddr2 memory therefore the 400mhz shown is cpu-z is infact doubled to get the true speed of 800mhz.

You might want to try increasing the voltage to the memory slightly this should help, also maybe add 0.1v to the northbridge voltage.

Sorry, I don't understand exactly what your saying. Are you saying that even though CPU-Z says it's 400hz it is infact running at 800hz?

Plus, to make it more stable try increasing the voltage and northbridge voltage a touch?

Yes?

OLDPHART · 14 Mar 2008 at 14:19

Corsair 2GB DDR2 XMS2-6400C5 TwinX (2x1GB) 1.8v-2.2v,try running it at 2.2v for stability.

RoEy · 16 Mar 2008 at 12:26

OLDPHART said:
Corsair 2GB DDR2 XMS2-6400C5 TwinX (2x1GB) 1.8v-2.2v,try running it at 2.2v for stability.

But is it running at 800hz even though CPU-Z says 400?

The system is now fine.

slowrunner · 16 Mar 2008 at 15:54

RoEy said:
But is it running at 800hz even though CPU-Z says 400?

The system is now fine.

Yes it is, being DDR2 it actually runs at twice the speed of what you'll see reported in cpu-z, I have the same sticks and run them at 2.0v.

RoEy · 17 Mar 2008 at 08:38

slowrunner said:
Yes it is, being DDR2 it actually runs at twice the speed of what you'll see reported in cpu-z, I have the same sticks and run them at 2.0v.

Thanks slow runner. I havent set the voltage as the memory is completely stable. It's my Dad's PC so I'm not messing around with voltages now the system is fine. Why can't CPU-Z report the correct speed though? Or is there any other piece of software that can check the speed of your RAM?

Thanks for your help mate.

RoEy