whats wrong?!

[Pantlegz]

If small FFT in Prime95 works fine but large/blend throw errors then I have a memory issue? Or could it be a FSB issue?

E8400 - 9x1750 w/ memory clocked at 800Mhz have also attempted linked/sync'd but no luck there either.

Sorry, I know it's a fairly basic question just not used to OC'ing Intel's yet

 

[v8envy]

9x1750 = 15.75 ghz. If that was truly the case you're lucky the CPU doesn't vaporize, never mind fail prime95.

Do you mean 437 mhz fsb? Knowing your motherboard, PSU and memory timings may help troubleshoot.

 

[MarcVenice]

At 437.5 FSB your memory is running at 875mhz ~. What ram you've got ? If it's generic ddr2 800mhz ram, chances are it doesn't like running at 875mhz, without a little extra voltage or loosened memory timings.

 

[Pantlegz]

lol beat me to the edit, the QDR is 1750 os i9t would be 437.5x9. 15Ghz would be nice tho lol.

OCZ DDR2 8500 - 2.1v - 5-5-5-15 T2
EVGA 780i
Antec TPQ 1000

Vcore is at 1.4v
MCP 1.525v
FSB 1.3v
HT 1.3v

Max Temp 62c during 8k FFT

 

[MarcVenice]

Ok so it's probably not the ram speed or timings. T2, hehe. How many sticks ?

 

[Pantlegz]

Originally posted by: MarcVenice
At 437.5 FSB your memory is running at 875mhz ~. What ram you've got ? If it's generic ddr2 800mhz ram, chances are it doesn't like running at 875mhz, without a little extra voltage or loosened memory timings.

I currently have MRAM/FSB UNlinked, so the ram is at 800Mhz. But I have tried linked/sync'd and same issues

4 1gb sticks, same issue with 2.