Question 8700K at 4.90 at 1.30 good or bad?

anshugiri

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Dec 31, 2009
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Hello folks,

I just moved up from an 8600k to a 8700k. My OC is stable at 4.9ghz (no avx offset) at 1.30v, with uncore at 4600mhz. Is this a good or bad chip? I tried 5.0 (avx -1 offset) at 1.38... it was stable for prime95 1344k stress test for an hr... but real bench crashed because temps went over 100c.

I am using a Noctua NH-U14s cooler, and 3200 CL16 ram OC'd to 3466. Asus Z370-A Prime.
VRM Temps were in 70's even at 1.38v.

Thanks in advance.
 

Rodrigodrt

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Nov 21, 2014
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pretty good imo, 1.30v is perfectly safe, seems like more worth it than chasing 5.0 because the improvements seem quite diminishing, but perhaps, if you can get away with 1.30v @ 4.9, maybe you can even with 1.35v dish that 5.0 if you give some more input voltage and lowering or actually increasing the ring ratio, + a bit of ring voltage cause this too helps stability.

also system agent voltage helps stabilize a memory controller that otherwiselly causes crashes making you think vcore is to blame, when moreoften .5v on vcore is enough for 100mhz bump.
 
What are you system specs?

Have you played with the LLC at all?

I know not all CPU's are equal but I run 5.1Ghz @ 1.37v, 6 out of 7 or line load calibration, CPU cache ratio 46, and no AVX offset

I know it sounds scary but have you thought about deliding your CPU?
 

anshugiri

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What are you system specs?

Have you played with the LLC at all?

I know not all CPU's are equal but I run 5.1Ghz @ 1.37v, 6 out of 7 or line load calibration, CPU cache ratio 46, and no AVX offset

I know it sounds scary but have you thought about deliding your CPU?
Asus Z370-A prime
Gskill trident z rgb 3200 cl16 2 x 8gb
Nhu14s

yes, I’ve set to llc 6, controls droop best in my case.

haven’t considered delidding.
 

anshugiri

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Anyways, the local shop allowed me to return it and take another chip... its stable at 1.3v 5ghz with no avx offset... and even chip to chip at same voltages and load... the new chip is 5-8c cooler running.
 

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