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8Packs no BS testing Intel 8700K and Z370 with Delid 5ghz and above available from OCUK.

Rezz said:
How do people run 5 GHz AVX Prime95? HWInfo shows me almost 300 W power consumption when I try that... Failure is inevitable.
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I got a 5.1 binned. I run it at 5ghz, 1.35v, avx offset 0. tested overnight prime95 latest version. Works fine for me. Also running full small FFT for maximum heat output I max out at 82 degrees on air (case open), and in place large FFT maxed out 70 degrees (NHD15 Silent profile) with 160-200w in CPUID (I run and test with AVX because its 2017 and I don't see the purpose of dumbing down a 600£ CPU. Like when people disabled Hyper-threading on I7s ages ago to achieve better OC temps).
 
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@8 Pack: Prime and Cinebench behave as expected. AVX offset with AVX Prime, normal clocks with everything else. It is games that get AVX clocks.

I also use an NHD15 and seem to get much higher temperatures. Maybe I should reseat it to make sure the thermal paste got applied correctly.
 
8 Pack said:
No game I ever tested caused the CPU frequency to dip under AVX load even when the platform has AVX offset set. So I am pretty sure games don't have AVX. Try Prime V 26.6 vs AVX version 27.x 28.x see what happens.
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26.6 does the same for me. Avx loads also does the same. It seems anything that loads more than 2 cores causing it to fall back to the avx offset.
 
I just set HWInfo to sample 10 times a second and noticed Cinebench dip to AVX Offset once during a run. It was only for a short moment and not enough to affect scores, but it happened. Then I launched BF4 and basically got stuck on AVX clocks.
 
Rezz said:
I just set HWInfo to sample 10 times a second and noticed Cinebench dip to AVX Offset once during a run. It was only for a short moment and not enough to affect scores, but it happened. Then I launched BF4 and basically got stuck on AVX clocks.
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Yeah I don't believe this is a setup issue, seems like a bios problem
 
Rezz said:
I also use an NHD15 and seem to get much higher temperatures. Maybe I should reseat it to make sure the thermal paste got applied correctly.
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I have SA and Io at 1.05 and running a gigabyte gaming 7 (that seems to vdroop a bit, from 1.37 to lowest 1.29) if that helps

EDIT: vdroop are actually around 0.02 or maybe 0.03. there was a conflict running cpuz and hw monitor simultaneously, was also reading VID voltages from hw monitor and not VCore (vcore monitor sometimes disappear if cpuz and HWMonitor run simultaneously and conflict)
 
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Yeah, I need 1.2 IO and 1.23 SA for my RAM to run at 4133. Maybe not ideal circumstances for 5GHz AVX Prime. At least I got rid of the heat spreader on my RAM so I can use both fans now.
 
17-17-17-37. Might also do 17-16-16. 4266 needs at least 19-18-18. At 3866 I could do 16-16-16, maybe 16-15-15 would work there as well.
 
CPU runs AVX clocks if AVX offset is set, despite no AVX instructions being used to our knowledge. Seems to happen happen a lot in games.
 
Also having the issue with AVX offset issue with binned 5.2ghz 8700k & MAXIMUS X HERO

Xmp
Avx offset 3
All core ratio 52
Digi power llc level 6, could current cap 140%
Cache ratio min 44
Cache ratio max 44

Core voltage 1.4
Dram voltage 1.4
Vccio 1.1
Vccsa1.1
Cpu standby volts 1.1
 
I think I figured out why me temperatures seem so bad. The heat spreader seems lose at one side which probably screws up the contact to the die. Not sure whether I should return it, it seems stable at the 5.1 GHz in non-AVX Prime, just running much hotter than it could. And I kind of need a CPU.
 
How are your guys temps when the frequency throttling occurs in games? Is it only hitting the target AVX offset?


Rezz said:
I think I figured out why me temperatures seem so bad. The heat spreader seems lose at one side which probably screws up the contact to the die. Not sure whether I should return it, it seems stable at the 5.1 GHz in non-AVX Prime, just running much hotter than it could. And I kind of need a CPU.
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When clamped and braced down by the socket bracket that shouldn't be an issue.
 
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