i7 920 overclocking thread

[stargate125645]

Originally Posted by Villainstone

I haven't tested stability yet so I will return with temps. Voltage is crazy though. CPU-Z says it is 1.45, and the VTT is set to 1.40 I think. I will mark it all down right now I am trying to see what I can do.

http://valid.canardpc.com/show_oc.php?id=546608

Your QPI voltage is above spec. I would lower it...
http://www.overclock.net/intel-cpus/...ml#post5879338

Originally Posted by Chewman

I thought you could damage i7 processors by bringing your DRAM Voltage over 1.65?
or am I wrong?

See the link above.

[Rochfordrambo]

just finished some testing and noticed with ht off @ 4ghz in 3d mark vantage my cpu score is about 17500 but on my other bios i have it set @ 3.8 but with ht on and my cpu score was 23500 big jump (no phsyx of course) my question is. is it just a benchmark thing or will i really see gains in games from having ht on

[stargate125645]

Originally Posted by Rochfordrambo

just finished some testing and noticed with ht off @ 4ghz in 3d mark vantage my cpu score is about 17500 but on my other bios i have it set @ 3.8 but with ht on and my cpu score was 23500 big jump (no phsyx of course) my question is. is it just a benchmark thing or will i really see gains in games from having ht on

I think your CPU is throttling itself. Do you have C1E and the like enabled?

[Rochfordrambo]

Originally Posted by stargate125645

I think your CPU is throttling itself. Do you have C1E and the like enabled?

no c1and all that stuff is disabled

[stargate125645]

Originally Posted by Rochfordrambo

no c1and all that stuff is disabled

Is 3DMark06 multi-core capable? If it is not, then HT should theoretically help. If it is multi-core capable, then I think your CPU is throttling itself due to high temperatures or some other factor. 1.3V for 4.0GHz seems rather low.

[laxrunner]

Originally Posted by Chewman

I thought you could damage i7 processors by bringing your DRAM Voltage over 1.65?
or am I wrong?

The .01V won't make any difference. The thing that will actually damage the processor is having >.5V difference between dram voltage and QPI or VTT or QPI/VTT (or whatever your board happens to call it) voltage.

[Rochfordrambo]

Originally Posted by stargate125645

Is 3DMark06 multi-core capable? If it is not, then HT should theoretically help. If it is multi-core capable, then I think your CPU is throttling itself due to high temperatures or some other factor. 1.3V for 4.0GHz seems rather low.

Temps never go above 65 under load and idle @ about 36-38 so i dont think its temps i just think vantage must read all cores when HT is on therefor giving a bigger score than with HT off

[stargate125645]

Originally Posted by Rochfordrambo

Temps never go above 65 under load and idle @ about 36-38 so i dont think its temps i just think vantage must read all cores when HT is on therefor giving a bigger score than with HT off

According to what program, though. That's the key. Those are incredibly low temperatures for 4GHz even for a lapped TRUE. Those sound more like IHS temperatures than core temperatures.

[FuzzDad]

I'm running this in a Element S mid-tower (excellent cooling) and a 9900LED air cooler. Right now my CPU is 22C, VREG 48C and the four CPU cores are 33-39C. When i fire up Prime95 I get temps on the four cores in the upper 50's.

http://valid.canardpc.com/show_oc.php?id=546937

What about the RAM? Seems to me I must have something a bit screwy there.

[nebuchanezzar]

Originally Posted by stargate125645

According to what program, though. That's the key. Those are incredibly low temperatures for 4GHz even for a lapped TRUE. Those sound more like IHS temperatures than core temperatures.

tl;dr all of what's transpired but Stargate is right. If those are your temps at the socket like most monitoring programs read you are not getting an accurate temperature. At least not in the sense that most i7 users can relate to.

Real Temp or Core Temp are two programs I would recommend. They both read the temperature at the cores themselves and not at the socket. This seems to be a very common mistake with those new to the i7 systems.

Let us know what you find out.


@FuzzDad, Your ram is running at 1460 and high latencies...I don't like the latencies myself but they are not such a deal breaker with these systems. If you mean the 730, thats normal. It's half of what you were expecting though huh..