What kind of voltage are you using though? 1.2v adaptive / offset is a hell of a lot different than 1.2 manual. With adaptive you will get a lot more under load. Grab cpuz 1.64.3 (
CPU-z) to check load voltage or the latest beta of aida64 will be accurate as well as it is optimized for haswell. You dont have to pay, the trial version does the trick and the stability test works fine. Grab version 3.00.2505 here -
Downloads | AIDA64
The reason why I suggest aida64 is it updated constantly and includes full instruction sets for haswell.
I always start with manual voltage. When I reach stability then I test with adaptive or offset carefully to understand how the VID is changing at certain speeds/loads.
Since I am wholeheartedly unhappy with my OC right now, I'm not at the offset/adaptive voltage stage yet.
Aida64 CPUiD says that even with Ultra-High or Extreme LLC I'm getting within .05 volts of what I've set manually. So 1.310 in the BIOS is giving between 1.312 - 1.315 according to Aida64 CPUiD.
CPU-Z is accurate on the Asus TUF Gryphon but not the Z87M-Plus so I needed Aida64 anyways.
I de-lidded the thing last night and put CoolLaboratories Liquid Ultra Pro between the die and IHS, and Vaseline over the contacts and resistors on the chip's PCB to ensure no shorting out from excess CLU. The chip runs fine, and no negative effects except, and about a 7 celsius package temperature reduction.
The AVX tests on IBT and LinX take another 20 seconds to reach 100 celsius and start throttling after the de-lid.
This is at 4.4Ghz @ 1.29 volts vCore (verified in Aida64 CPUiD)
This is my second de-lid, BTW. My i7 3770K runs all day at 4.9Ghz with a lower end Kuhler H2O 620 at less than 80 celsius on these tests at 1.38 volts vCore. 5.0Ghz at 1.43 volts VCore was fine too, just too much voltage for little performance increase.
At this point, I'm leaning towards having a dud of a 4770K. It's
folding@home right now with stability after eight hours, but it's using 155 watts of power (with no video card) for 25K PPD. My kill-a-watt has shown it go up to 220 watts power under the IBT and AVX tests. Something is up.
I also tried using 125 mhz bClk Strap and setting memory accordingly at a lower speed to see better stability, with little to no change.
The newest versions of AIDA64 run out in 30 days.
Yes, and not worth the license price IMHO. My OCing efforts right now look like they'll exceed this period.:doh:
2nd Prime 95. I've found that if I can get through 2 iterations of the torture test without an error, my system is dead stable. No need to run it for hours.
I found that with a proper set-up this is true, except for the older i7 8xx series which always seemed to die after 8 hours, likely due to too-high LLC and vid drift. So now I'll use less LLC and higher offset to ensure this doesn't happen at a slight cost of power consumption and general temps.
Following that practice I 100% agree.