680i 395Mhz Wall

[Boogle]

Hi guys Hoping you can shed some light on this, its been a long long time since I overclocked, so I'm probably missing something. I can't go over 395Mhz FSB, any higher and its just not stable. I've tried all sorts of voltages and timings, and it makes no difference.

Spec:
E6300 B2
Zalman 9500 LED
EVGA 680i P23 BETA BIOS
2GB Corsair Dominator C6400C4D
MSI 7900GTO (flashed to GTX)
OCZ 520W
3x Maxtor DiamondMax 10s 200GB (2x in RAID 0, one on its own)

Spread spectrums disabled. C1E, Speedstep, CPU thermal are all disabled.

I've set the main RAM timings manually, as well as the voltage; subtimings are all on auto. Currently I have all the voltages at stock (not auto), except for RAM at 2.1v, and CPU FSB at 1.3v. If I go to 1590 (397Mhz FSB), no matter what the voltage (any voltage, or combo of voltages) it's not stable.

I just don't understand it. Increasing SPP voltage (and/or CPU voltage) should increase the overclock surely? Even if its a small jump. But no, its like there's some sort of gremlin thats saying 'sorry - no more'.

Any ideas? Thanks!

 

[mercyless]

have you tried any higher as the fsb has holes, try 1600 plus,

are you linked or unlinked ?

 

[Boogle]

Unlinked, although tried linked 1:1 as well. Tried 1699, which is just before a strap and seems to work for everyone else. Booted up fine, but not stable Tried all sorts of different timings and voltages to try and find a sweet-spot. Sadly was no go. Tried 1890 for a laugh, won't complete loading Windows Think I tried 1650 once too, also didn't work.

So very confused?