So im using a Hyper 212 Evo, and a i7 4790K. im using intels extreme oc utility. and i reached 4.9Ghz at 1.33Mv. and its no more thn 88C. is that good or what?
1.33Mv scary stuff but its keepin cool so I guess job well done. Now time to get 5.0Ghz! P.S. Cinebench r15 scores and Cpu-Z or it didn't happen >:D
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Thats pretty darn good. How stable though? & what RAM - & @ what speed?
its pretty stable i got through an hour of stess testing in intels stress testing mode. i havent had one crash yet. and my ram is "eh ok" Crusial Balistic Sport 4x4 16GBs @1600Mhz
i tried 5Ghz instant crash on stress test lol
I demand cinebench r15 tests!!!
Able to get hold of dry ice? Board upside down, heatsink in the d'ice and crank some more voltage.
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4.9GHz on an haswell cpu with just a 212 evo cooler.
hard to believe that it would be rock stable.
probably not but if it passed one hour. than its okay for me. if it crashes more than 2 times. ill bring it down to 4.Ghz
4.8Ghz*
Ditto to MisteryAngel. Passing one hour on a test doesn't mean much. And overnight or 24 hour test means a lot more.
But when will you actually need that much reliability? I mean most games may only stress the CPU 30% at most with this CPU at 1080p
i would suggest to think about getting a better cooler to bring the temps down.
if you can hit 4.9Ghz, then you might have won a silicon lottery.
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What cooler do you suggest?
corsair H110 GTX maybe, if your case can handle that.
i run open air :P
Even a better fan on the 212 will work wonders - noctua, noiseblocker, scythe gt, corsair sp, etc. The stock cm fan is pretty poor.
well i have two fans. one pushing in and another pulling out
It isn't just about reliability and percents of a CPU used in a game. When a CPU is rock solid stable, it also means that there are nearly zero to zero errors possible (that can be faulted to the CPU itself), but when you do have an error prone CPU, all sorts of things can happen. Blue screens and random shutdowns can (and very possibly will) happen. I'm not saying that you didn't win the silicon lottery (know a guy that kinda won, and another guy that completely lost the 4770K lottery), I just don't believe in calling it so early in the day.
I recall running at 4.0 GHz at 1.46v on my FX-8320 (fairly old and worn out now, but just messing around), running the exact same cooler as you, ran about 4 hours of Prime95, and decided I was bored. So I stopped the test, let temps come down a little and went to play games. It was doing fine till out of no where, the things just blue screened. After a little testing and tweaking all the factors that I could figure were the problem, I narrowed it down to the overclock. At the same time, the exact same CPU ran perfectly fine, with a 16 hour Prime95 test at 3.5 GHz, 1.38v (I think?). On the surface it looked stable, but in the correct conditions or during a specific calculation it can go kaput. And if you do productivity work or things where errors do make a difference (CAD for me), an error in a render or simulation can be extremely time consuming and annoying, even if it doesn't cost you any money.
The noctua NH-D15, cryorig R1 and phanteks TC14PE are all good options for higher end air coolers.
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