Possible Issues with Corsair Dominator...

EniGmA1981

EniGmA1981

EniGmA1981

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14 Sep 2010
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Port Talbot - Wales
Hey guys,

I got my Dominator 2x1GB PC2-8500 set in this morning and I've set the speed and timings etc., the bios shows the default speed setting as 1066mhz (however my CPU o/c multiplier (400x9 - I can get 1066MHz @ 444x8 but the system won't POST) will only let me select 1000mhz or 1280mhz so I opted for 1000 as I didn't want to push it) but in windows, CPU-z only shows the max bandwidth as PC2-6400 400mhz... But the 'part number' for the RAM states CM2x1024-8500CSD. Is CPU-z having a spaz? or have I been miss-sold my RAM?

Or of course, have I bodged up the bios settings (probably a high chance... lol)

Is there another dedicated memory testing program out there that I'm not aware of?

Thanks in advance.
 
Don't think you've been cheated on your ram.

My current OCZ ( showing in cpu-z as pc3-8500F(533mhz) but will run fine up to 940 mhz) and my previous Corsair Dominators both had different ratings in the cpu-z 'max bandwidth' value to what they actually were sold as.

I thnk what it shows is what the chips were originally manufactured at, but Corsair found they were capable of running faster, so that's what they were released as.
 
OK cool that's good to know, so how do I find out exactly what speed it's running at? Is there a program that just does ram?
 
Cpu-Z will show you that.

Under the memory tab, look for 'Dram Frequency'. Double the value that it shows there to get what speed your memory is running at.

So in my case its 729mhz, which means the ram is running at 1458mhz.
 
That's cool, nice to know it's running at the right speed... How about why CPU-z is showing it as PC2-6400 when Sandra shows them as PC2-8500... Also, CPU-z keeps fluctuating my CPU core speed between 3600.2MHz and 2400.2MHz... Again, any ideas? I just don't think CPU-z likes my setup!
 
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The PC6400 info under the SPD tab is the JEDEC stock information. This has nothing to do with the actual speed of your memory or with how fast it may run. It's simply showing what the memory will run at default settings or after a CMOS clear.
 
That's good to know :)

Thanks for your help guys

I've iven up trying to get it to run at 1066MHz now as with my bios multiplier/frequency options I was only able to run 1066MHz with stock 3.0GHz CPU clock or at 3.83GHz which wasn't entirely stable... So I've opted for 1000MHz RAM speed and 3.6GHz CPU :)

I don't immagine 66MHz will have that much of a detrimental effect on performance will it? Not noticable in everyday usage anyway...
 
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