Need help overclocking i7 940

[stevehookem]

What is the "video from NCIX"? I can't find that.

[wsciutti]

Nick,

Thank you for the info that I might pass OCCT but still fail in FSX. I raised the vcore a notch, 1.40, and am now stable at 4Gh.

You were also very right about 'heavy metal' in your earlier guidelines to the i7; I have never flowm the LvLD 767 with frames locked at 30 and auto and scenery at max with a fluid ride.

system: i7 920@4Gh
            Mushkin 1600 7-8-7-7-20
            Raptor 150 MB drive
           260 EVGA card
           Noctua cooling
           Antec 900 case
           Max temp under OOCT load: 74C, room@70F

Your knowledge is much appreciated.

Jack S



PS followed the posts last night - nice to see the individual is not around!!!

[wsciutti]

Forgot: ASUS P6T version 2 (it is different than ver 1 which I had to RMA)

Jack

[NickN]

So I assume you are fine now Jack?


you dais you are stable @ 4Ghz.. and that includes FSX now?

[NickN]

[quote][quote]QPI/DRAM VOLTAGE 1.35v done

DRAM VOLTAGE: 1.65 or 1.66v Would keep putting it back to 1.66 when I attempted to change to 1.65

you have temp problem.. LOAD LINE CALIBRATION: ENABLED Done
and work Vcore to the lowest point where it is stable with the QPI/DRAM voltage I listed above

Somewhere between 1.34 and 1.40v I set it to 1.3812...but I guess I don't know what stable means. Should I raise it...than load test, or lower it than test?

If you can not get it to run stable at 80c or less your cooling solution is not doing the job.. either alignment or not flat

[wsciutti]

Nick,

Yes, thank you for checking. Frankly, I think the load temp was fairly good  due to my following your thermal paste suggestion: spread onion skin thin with razor blade.  :D

 Jack

PS: Your suggestion to RMA the original Mushkin RAM was also dead on; they replaced it very fast.

[jwenham]

wsciutti, I more or less have the samae system as you and thought I would give you my settings and see if that helps your temps a little more. I am at 4050 Ghz and the max temp I saw running OCCT for 1 hour was 74 C.

I have made all the adjustments in the BIOS reguarding the CPU as far as Speed Step, Load Line Calibration, ect.

CPU Ratio : I use 21X

BCLK : 193  ( 193 x 21= 4050ghz)

CPU Voltage: 1.35

QPI/Dram Voltage: 1.3125

Dram Bus Voltage: 1.64

I have tried all sorts of combinations and different CPU multipliers and this is what works for me. It also allows me to run my memory very close to full speed. My memory is 1600 rated and I have it running at 1543 Mhz.

[wsciutti]

J,

Thanks for the reply. I am locked at 20 with the 920 but I guess you read my mind.

I'm using 20x197=3.5 Gh and the RAM is at 1573 so I'm pretty close. The 4.0 Gh turned out to be unstable in FSX but so far she seems to be stable and I ran RealTemp in the background as a check - max was 63C.

I may have one of the chips AnandTech talked about.

I was also able to drop the vcore to 1.36 which helps with the temp.

I do believe a 940 is in my future somewhere - wish I had read Nick's suggestions sooner but $ were/are an issue.

Jack