My Core i7 920 - Overclocked to 3.4ghz
I do not keep it this high that often because I need to purchase a better heatsink. Although it runs stable. I have done a prime 95 torture test and the temps stay pretty good. But every once in a while it gets a little too hot for my likings.
Not as nice as Serps i7 920.
A large part of why Serp got his 920 to OC so far is because he turned off hyper-threading. If you just want a kick ass SuperPi score, turn off hyper-threading and OC the crap out of that thing.
Thanks Obsidion.
I put it up to 3.8Ghz with hyperthreading off. Got my Super Pi score in the 10 second range.
I ran a prime 95 torture test. I got not errors. But this AI manager program that I got gave me some temperature warnings. I wont keep it this high until I get that heatsink
And the voltage seemed kind of high (I have the voltage set to automatic)
Auto voltage controllers tend to bump the voltage too high when overclocking. If you use that overclock permanently, you'll probably want to switch to manual control and fine-tune it yourself to minimize heat generation.
SuperPI is not a real test of your CPU power. It really only gives you a way to demonstrate your CPU's frequency. I've noticed that there seems to be no difference in PI calculation times between, for example, an E8400 @ 3.8 and an i7 @ 3.8, yet the i7 is a much more powerful CPU.
That is because you are doing a calc of PI. No matter what proc you use to do basic math functions(+ - / *) there is a set number of clock cycles that have to be used to perform it.
At 3.4Ghz Trumandrummer's i7 920 cranks out 11.6, my Kentfield gets into the 14's by cheating (I disabled almost every unneccessary service). Pentium 4 would do......high thirtys I guess. It's not just frequency, architecture plays a role here.<cite class="ic-username"></cite>
I'm not completely discounting architecture, but the calculation is based much more highly on frequency than architecture. Real-world and synthetic benchmarks such as games, data compression speed, and other such tests will show a larger difference between an i7 and an older CPU.
Oh Snap 600MHz more on water over air cooling!!! gets 1.5sec's faster times Very nice.... I would love to see what your final fine tuning hits that CPU at.
Here is my latest running at 4.0GHz on air...
What temps are you hitting at 4.6GHz on full load with water?
I really doubt that 4.6 run was stable enough to do stress testing. I had to use 1.42v just to be able to boot and even then the desktop was kind of flaky.
I can run 4.2 stable at 1.36v with idle temps around 40c and load temps with prime95 at 50c. Running LinX load temps get around 60c.
Intel's recommended max vcore for i7 920s is 1.36v, but there are people that run at 1.4v daily with out problems so maybe 4.6Ghz isn't that far away:D
This is stable for 8hrs of of OCCT. Probably going to disable Turbo and run 200x20 if I can do it with this voltage. Any higher and the temps get a bit higher than I'm comfortable with, at least until I add a res into the water loop.
High 70s. I'm using a ghetto-fabulous zip-tie mount on my Apogee GT until the LGA1366 mounting kit arrives and as I mentioned above, no reservoir right now.
Comments
wtb SLI
Damn my Q9300 and its insanely low multiplier. I still love it though, much better than my 3800+ x2
The insanely bad 8M time is pre-overclock for reference... or at least that's my excuse for being too lazy to run it again.
I do not keep it this high that often because I need to purchase a better heatsink. Although it runs stable. I have done a prime 95 torture test and the temps stay pretty good. But every once in a while it gets a little too hot for my likings.
Not as nice as Serps i7 920.
I put it up to 3.8Ghz with hyperthreading off. Got my Super Pi score in the 10 second range.
I ran a prime 95 torture test. I got not errors. But this AI manager program that I got gave me some temperature warnings. I wont keep it this high until I get that heatsink
And the voltage seemed kind of high (I have the voltage set to automatic)
1 Ghz over stock and I barely break into the 14's. Notice my temps....FAH
First PI run
Here is my latest running at 4.0GHz on air...
What temps are you hitting at 4.6GHz on full load with water?
I can run 4.2 stable at 1.36v with idle temps around 40c and load temps with prime95 at 50c. Running LinX load temps get around 60c.
Intel's recommended max vcore for i7 920s is 1.36v, but there are people that run at 1.4v daily with out problems so maybe 4.6Ghz isn't that far away:D
i7 920, GA-EX58-UD3R, 6GB OCZ DDR3-1600 (OCZ3OB1600LV6GK)
Thanks! This thing is crazy fast even coming from a Q6600 @ 3.8GHz and my VMs are loving the nested paging.
17.19 sec 1M
Did you set the affinity of SuperPi to one of the cores in task manager? Your score can be higher if you do that.
Oh really? testing...