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8 Krypton

Re: Overclocking help on i7-930/950/960

The reason I ask is because I have i7 920 and I have it set 190x20=3.8 and the vcore offset is +80mv which is 1.28vcore underload in the bios it shows as 1.3vcore. I am just wondering how high the vcore gets to at +300mv?

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8 Krypton

Re: Overclocking help on i7-930/950/960

Thanks for the response.

I managed to O/C my I7-960. I didnt exactly use the same settings as you suggested as it was doing funny things with my display. Upong booting to Windows 7, it would just blank my screen as if there was something wrong with my video card.

The settings I used

speedstep: enabled
c state: enabled
turbo mode: disabled
speed spectrum: disabled
memory ratio: 6
CPU Bclk: 165

I didnt bother with the below settings:

QPI frequency: 4.8GT
CPU vcore voltage offset: +300
RAM voltage: 1.65
IOH voltage: 1.30
QPI ad uncore voltage: +320QPI frequency: 4.8GT

My question is, because I didnt bother with some of the above settings, should I worry about this.. By not following all the settings above, could I damage any part of the CPU etc? It seems to be the most stable for me by using only some of the suggestions above.


It's perfectly normal to have different OC results from similar, even identical systems. When you're experimenting with OC, you need to find the max oc limit for your CPU and RAM individually. That is to say, when you are playing with the CPU, leave RAM settings as close to the default as possible, and vice versa. This way you don't ahve to contend with instability from 2 potential sources.

 

I'm quite certain 960 should have no problem reaching 160x25=3840.

 

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8 Krypton

Re: Overclocking help on i7-930/950/960

Some of the settings that you skipped are most germame to OC the cpu, other are related to oc the RAM.

 

Do this for OC the CPU:
QPI frequency: 4.8GT
CPU vcore voltage offset: +300

Note vcore offset +300mv would make the effective max vcore 1.15+0.3 = 1.45v, while still within the 1.5v safety range, it's pushing it hard, I do not recommend exceeding 1.5 (or offset +350)

The following setting are strictly related to RAM oc, and sould be left to default if you're not oc RAM at all. Again, these setting are quite aggresive, you shouldn't push much more if you're oc RAM.
RAM voltage: 1.65 (should be safe under 1.75)
IOH voltage: 1.30
QPI ad uncore voltage: +320

Last but not least, download "PRIME95" and select the burn-in test to test cpu stability with all 8 cores running at full. Use "memtest" for oced RAM.

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