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Broadwell-E Stability Above 4.3Ghz - Issues with Cache Multiplier

post #1 of 2
Thread Starter 
So I am having difficulty achieving stability above 4.3. The below settings are rock stable (ie p95 AVX2 stable). However, at 4.4 it crashes almost any test within 10 minutes.

One other piece of the puzzle- if I mess with any of the cache multiplier settings (ie to freeze the cache multiplier max at 3.6) the system becomes highly unstable. I have also tried raising VCore to 1.38, and messing with the LLC, without any improvement.

Thoughts or ideas?

CPU: 6850k
MoBo: ASRock X99E/ITX
CPU Mult(All Core): 43
Cache Mult: Auto
Cache Min: Auto
VCore (Adaptive): 1.3V
Cache (Adaptive): 1.26V
V LLC: Lvl 5
CPU Input V: 1.9V
CPU IO: 1.05V
Spectrum Settings: [All Off]
C-State: C-6 w/ Retention
Pll Trim: 15 (This was a default setting for some reason)

All other settings at default/auto
post #2 of 2
Thread Starter 
Any thoughts? I know its an unusual board/cpu combo.
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