Weird OC issue...

spy2520

Weaksauce
Joined
May 11, 2006
Messages
115
Why is it that at 250MHz FSB (memory at 834) my computer runs fine, but at 254MHz (memory at ~847) memory show errors in memtest at any speed with any timings i give it?

but, at a lower FSB, like 936MHz (234MHz) effective i can actually get the RAM to run at 936 relaxed timings no errors no problems with the computer.

do i need to increase FSB voltage? system components are ASUS P5W DH, Pentium D 930, Corsair DDR2-6400 Dominator with the fan module...
 
bump people...bump people...i've taken the RAM up to 2.4v (highest the board will support.) on the 1016/847 combo and it just doesnt like that frequency, cpu still only hits 60*C at full load so i doubt the cpu overclock is failing, the system boots and will go into memtest but i get memory related BSODs if it gets into windows. i currently have it at 1000MHz FSB and it works perfect, memtest for a while and its fine, no BSODs, nothing abnormal. I think this board supports 1066MHz FSB for use with conroe chips so i'm not sure of what the issue is...
 
Some additional information would be extremely helpful!!! Diagnosing your problem is like diagnosing a problem with a car without knowing year/make/model/motor/etc.
 
well i got most of the components on ther what else do you need to know? the motherboard supports 1066MHz front side bus so i should at least be able to take it to 266, but i can only really go to 250 without getting memory errors, thid id on air cooling if that helps...
 
spy2520 said:
well i got most of the components on ther what else do you need to know? the motherboard supports 1066MHz front side bus so i should at least be able to take it to 266, but i can only really go to 250 without getting memory errors, thid id on air cooling if that helps...

I suggest reading some overclocking guides.
the 1GHz bus is not the same bus as that which reaches 250MHz.
They are linked though but they are not the same.
 
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