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I7-950 first overclock - Page 2

post #11 of 18
Quote:
Originally Posted by L337Something View Post
So why leave hyperthreading on if i dont do any editing at all. Just gaming and web experience. and Hd videos. and any ideas on the lowest i can go for core voltage if im at 1.344 at a max of 67 degrees on 100 percent load 30 minutes into prime 95 on BLEND
1.344v is a lot for only 3.7GHz. I got stable @ 4GHz with only 1.28v.

Give it a shot at 1.25v and run stress tests.
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post #12 of 18
Quote:
Originally Posted by L337Something View Post
Self test 640k just passed on 3703.08Mhz and this second test has boosted my temps up to 73 72 70 68 MAX and made a alarm GO off...
Also are you using OCCT? I like OCCT and Intel Burn Test as they use Linpack computation which really stresses the CPU much more than what Prime95 will. There are options to set the upper limit alarm. These chips are good until 100C theoretically, but I would try my hardest to keep it under 80C for every day use.

But if you want to stick with what you know and use Prime 95 then I would suggest doing seperate tests of small FFTs and large FFTs. Using blend works too but if I remember correctly it's better to stress the IMC/ memory (Large FFTs) and CPU (Small FFTs) separately.
Edited by blackbalt89 - 3/2/11 at 9:54pm
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post #13 of 18
Quote:
Originally Posted by L337Something View Post
I dont know what c1E is how do where in bios is that to disable. and I need my temps righ tnow after 30 min of prime 95 on BLEND.. are 63 61 61 60 MAX and 39 38 39 37 MIN pretty good? i have the venemous X heat sink
c1e should be in CPU settings, if your sabertooth BIOS is anything like my RIIIF. I've got an i7 950 running pretty much completely stable 4.02 Ghz at 1.2650 vcore. If you're over 1.3 volts, you've got more than enough juice for a stable four-oh.

What do the more experienced overclockers think about things like Load Line Calibration? I have mine set to Full (100%) because I saw this being recommended in another 950 overclocking thread. Is full LLC good? Should our guy here use it?
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post #14 of 18
I have LLC enabled in BIOS. I don't remember if it gave me an option for percentage though. That might be reserved for higher end boards. Lol.
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post #15 of 18
Sounds like consensus to me, lol. Go ahead an enable Load Line Calibration, 1337Something, if you haven't already. Also make sure you manually set your core multiplier to 23x and turn off TurboBoost. You want your processor to have a consistent clock speed so you can fine tune your voltages. TurboBoost makes your overclock a moving target.

As for HyperThreading, its benefits depend on the application. If a program is not designed for newer Intel CPUs HyperThreading will simply be trying to cram twice the data through each core. This is why i7 CPUs with HT OFF are able to perform more FLOPS in IntelBurnTest than those with HT ON.

On the other hand, applications designed to take advantage of the parallel processing power of i7s will see a benefit from HyperThreading. Personally, I leave HT on. For what I do (playing very new games and web streaming) the benefits of HT outweigh the drawbacks. Also, I think it's rad.

Here are some additional things to try:

Disable eist

Disable c1e

Disable speedstep

Make sure your multiplier is set to 23x. Leave it there and use the bclk frequency to adjust your clock speed.

Enable Load Line Calibration (LLC)

Until you know what your CPU is capable of, make sure all your DRAM timings and voltages are set to their stock settings. Incorrect DRAM settings can cause major instability and that can be a distraction when trying to overclock your CPU.

Once you've set your bclk frequency to get the clock speed you desire, play with the CPU voltage until you find the minimum amount needed to keep your CPU stable for extended periods of intense stress. I recommend 10 runs of IntelBurnTest with maximum memory usage.

edit: DO NOT BE AFRAID OF CRASHES AND BLUE SCREENS! (They're normal during this process. Really.)
Edited by SlayerS_`Archduke` - 3/2/11 at 10:55pm
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post #16 of 18
Thread Starter 
WELL GUYS IM IN THE 4.0 GHZ CLUB THANKS TO ALL OF YALL!!! IM SO HAPPY CHECK OUT MY CPU ID... GET ME in THE CLUB!!
    
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post #17 of 18
Thread Starter 
WOOT IM SO EXCITED thank you all for your help on this.. Below the cpu ID is my 1 hour long prime95 test 100 percent load and temps just reached 70
    
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post #18 of 18
Congratulations, man. Run some IntelBurnTest, though. I found that when my system passed P95 with flying colors, IBT tripped it up.

The more you push the limits, the better you'll get at overclocking. Welcome to the club, my friend.


edit: I think your voltage still might be a little high. Once you finish your stability testing at your current vcore, try giving it less and less until your stress tests start producing crashes. Less voltage = less heat and that's always a good thing. Cheers!
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