4670k Stock voltage 1.7v?

[CodenameHaswell]

I reinstalled thermal paste on another machine of mine, and I thought what the heck, while I'm at it, I'll just reinstall it on my main machine, a 3.5 year old that I haven't changed it on yet. I reapplied thermal paste, changed out for a higher CFM fan, & booted up prime95 to see if my temps changed. My idle temps are great-- 30C. However, when I booted up prime95, my temps went up into the mid 80C's. Before it was a healthy 75Cish. The only time it has ever went up past that is when I tried to overclock to 4.2 ghz and it went up to 90C, in which I quickly went back to stock 3.8GHz Turbo clocks. I was looking into possibly undervolting it, now that my load temps are so high, and the stock voltage is 1.7V! I hear that people with this chip only go up to 1.7 for 4.0Ghz+ overclocks. Not stock clocks.

 

[iamacow]

1.7v will kill the chip very quickly, like within minutes! stock voltage is around 1.2v I would go into the bios and factory reset everything. Max safe limit is 1.4v for long term use. Overclocking to 4.5Ghz+ is usually achieved between 1.3-1.4v.

 

[CodenameHaswell]

I reset the bios, and tightened my hyper 212 evo down a little more and now max temps are 77. I wish they were a little lower, however, I am running prime 95 small fft's.

 

[iamacow]

Make sure you run an old version of Prime95. Haswell chips have a bug that makes the chips run warmer than it should.

 

[The Paladin]

yeah , should never go over 1.35v at vey MAX, as for temp yeah the cpu will be warm.... under stress can get close to 80 at worst. but it hums at that temp