Help me get the best out of an i7 860

[almoststew1990]

I have an i7 860 which I am trying to overclock it for a project. I can get it to 3.9GHz and I thought it was stable but BFV gave it a BSOD. I was aiming for a magic 4GHz but I'm not sure that is possible unless anyone can remember what overclocking they did 10 (!) years ago on these chips. There are a few other voltages and settings I can tweak around.

What I've done:

Disable all power saving (I remember doing this back then).
Raised multi to 21 (non turbo is 16, max turbo is 22)
Raised BLK to 181#
Vcore is 1.376 ish (This fluctuates up when less cores in use and down when more cores are in use!? Turbo is off).
QDI/VTT is + 0.100
CPU PLL is + 0.100
DRAM is dropped down to less than rated speed to adjust for BLK

Temps top out at 70c in game. I've got a Silverstone AR01 which reviewed as a very good £30 cooler. I've added an extra 120mm fan to it too. I'm confident CPU temps aren't an issue.

It's a Gigabyte GA-P55A-UD3 motherboard.

 

[almoststew1990]

Bumping my old thread...

I read that these chips have the pci-e controller built in and it was the first generation of this.

I'm struggling to match my old overclocks and the only change to the system is putting a PCI-E wireless card in instead of a USB WiFi adapter.

Can having a PCI-E x1 (in addition to a x16 GPU) make overclocks less stable (in general or specifically on an i7 860) now that the PCI-E controller is on the CPU?

I've manually set the PCI-E "bus" to 100 rather than just auto.

 

[almoststew1990]

OK it sounds like it's separate to my overclocking problems!