Overclock i7 960

[Casmund]

Hi all, hoping you can help me figure something out I have tried overclocking my i7 960 processor a bit and have gotten it stable at:

4000Mhz

CPU voltage: 1.325

multiplier: 25

BCLK: 160

QPI/DRAM Voltage: 1.38 (have a feeling i could probably try and get this lower)

Dram bus Voltage: 1.5

Memory runnning at 9-9-9 24 at 1600 as per label

other settings as per the guide in forum.

Heres the thing thats confusing me... if i try to get 4 ghz at bclk:200 and 20 multi it will not be stable even at a cpu voltage of 1.375

is this a limitation of the memory happening wich is why it works one way but not the other?

would upping the dram bus to 1.55 or 1.6 help at all. Should I just use the current multiplier combo or try to attain 200 bclk?

thanks in advance

I was just wondering about the 200 as it seems to be the standard to shoot for.

Chris Asmundson

PS: I went to the Caselabs website after seeing Tom's video and wow I am really looking forward to his video reviews on it even more now. I have a Mountain mods case and I have always preached to my friends about how i love the case...but I think MM have a deadly adversary in that niche now with Caselabs.

 

[S1EJ0]

Have you increased the NB voltage? I need 1.3V for a 200BCLK.

Is your memory rated at 1.5V?

You shouldn't need such a high QPI/VTT if using 1600MHz RAM with C9 timings

 

[Casmund]

Memory is rated at 1.5 v and I have not changed the northbridge voltage.

 

[Casmund]

OK so I was looking at some settings and even tho I have load line calibration set to 100 percent in the bios it looks like it is disabled via a jumper on the motherboard. Could this be causing problems with the stability using the 200x 20 or does having it off just make me require higher cpu vcore voltage?