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i7 930 @ 4.5 ghz without burning the cpu?

post #1 of 10
Thread Starter 
Good evening!

I got my new processor today, after selling a C0 version that wouldnt overclock.
The processor i got was an i7 930 D0 @ 2.8ghz stock.

Managed to get a pretty decent overclock, i have gotten it to 4.3ghz stable for now. Tomorrow i will start a 24 hour burn test with prime95. The load temp for 4.3ghz was around 60-65 degrees. I reckon theese temps are quite good for load. The idle temps are between 35-45.

So! To the problem. I tried 4.4ghz, added some voltage to the cpu, but didnt even get into windows. After going up to 1.4125 i couldnt push it any further without consulting some overclockers here on the forum.
The hardware i am overclocking on is:
- i7 930 D0 currently @ 4.3ghz
- EVGA x58 sli le motherboard
- kingston 6gb @ 2000mhz(rated for 2000mhz anyway, not running that speed now)
- ati 5850 @ stock speeds
- corsair 1000W powersupply.

My main concern is killing the cpu with too much volt. Is it dangerous to go over 1.45? or even 1.5v in order to keep 4.5ghz as a 24/7 clock?
you may wonder how i kept 4.3ghz @ 60-65 degrees. Well i opened my window, took off one of the sidedoors, and basically laid fans all around the case. -10 degrees outside, so this is helping my temps very much under load testing.
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The whoopdidooo
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post #2 of 10
1.45-1.5v will kill your i7 since your on air. but the fact that you had to jump so high in voltages for a mere 100mhz seems to point to other problems like motherboard. you might need to set some other voltages other than Vcore to get higher. most boards need extra voltage to get over the 200-220 QPI area. post up all your current voltage settings if you can
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post #3 of 10
Try this

EVGA VDoop Control: Without VDroop
CPU Vcore: 1.4v
CPU VTT: +100mv
CPU PLL: 1.800v
QPI PLL: 1.800v
DIM Voltage: 1.6v
DIMM DQ Vref: Auto
IOH Vcore: Auto
IOH/ICH I/O Voltage: Auto
ICH VCore: Auto
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post #4 of 10
1.45V is fine with decent temperatures. I'd be hesitant to use 1.5V for 24/7, though.
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post #5 of 10
Thread Starter 
Hey guys. Thanks for replying! had a hard time finding the thread since it moved down the list so fast. I think i will settle with 4.3ghz for now. Once i move onto watercooling, ill take a look at this thread and get that tip i need to get up to 4.4 or even 4.5ghz.

Thanks!
The whoopdidooo
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The whoopdidooo
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post #6 of 10
There is another thread about a guy trying for 4.3 but it ended up being so hard on his system that he eventually just stood it back down to 4.2.

Not going to lie, but I stood mine up to 4.2 and haven't had any trouble at all with it at a reasonable voltage (1.37 and change) folding 24-7. And, I gave it a bit extra just to be sure.

And on top of that- I'm not sure what 200-220 qpi means... Unless he's actually talking about bclock or some other reference? I'm always open to learning but I think he means bclock. That seems to be the tipping point for IOH and ICH- not to mention spread spectrum on both PCIE and CPU.

100mhz might look good for show- but functionally... If you're just going for max and then pulling back then push it! Otherwise... 24/7 I think with the 200 dollar processor you have getting just about 60% increase in performance is good enough without having to destroy your cpu getting 61.

(Math is off- but principle is the same.)
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post #7 of 10
my last two i7s were really volt hogging at anything above 4.21 ghz so i ended up in leaving my past cpu's at that border there, especially with the sli le i had i was kinda tied to 4.2 ghz due to the nb heating up like crazy. keep an eye on that as well mate.
post #8 of 10
Also- takin your cover off is like dropping a tailgate to Improve mileage on a pickup truck- it doesn't work that way, well at least not like you might think. And leaving your window open? Yikes.

I can drop a few extension cords and bring my case outside to the -20 and clock to 5g... For as lOng as I leave my case outside. And I hope when people comment on it they call me an idiot.

If you want to oc- great. But don't do it at the expense of conditions in your house (or room if you have not yet crossed that threshold.)

Your hardware obviously isn't ready for It- when you get your loop in place- pull the trigger. Until then, cool your jets. Unless mum and dad pay for the parts in which case push it to 6ghz- then they can buy you a new one.
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post #9 of 10
If my i7 930 is anything to go by, it got to 4 really really easily, fairly stable on 1.25v 4GHz (several hours of prime).

But as soon as I tried going past that, I had to start ramping the voltages up a lot just to boot let alone be stable, hence why I just left it at 4 with a fairly low voltage.
    
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post #10 of 10
+1^

The trip to 4 / 4.2 or so is pretty reasonable but becomes disproportionately unstable and inefficient past that. Even 4.2 and 24/7 folding stable called for quite a bit more juice (for me) that what crabid is talking (I'm at 1.37 and change).

Then again, my cooling system is up for the task... I wouldn't be playing with that much power until you can turn the heat back on and put the cover back on your case with confidence.
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