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5960x & x99 deluxe ii strange overclocking problem

Kidd232
Level 7
CPU: i7 5960x
MB: ASUS X99 DELUXE II BIOS 1401
RAM: G.SKILL DDR4 3200 16G*4 F4-3200C14Q-64GTZ (14-14-14-34-2T)
SSD: SAMSUNG 950 PRO 256G
HDD: TOSHIBA 5TB * 3
POWER: COOLER MASTER V750
COOLER: CORSAIR H110i GTX

CPU CACHE MEMORY
4.2 4.2 2133 - STABLE
4.2 3.0 3200 - STABLE
4.2 4.2 3200 - UNSTABLE (already push 0.1v more for cpu and cache)

I have already try push all the voltages in BIOS and digi+ setting to extreme, but it still can not pass HCI memtest 600%. Try VCCSA from 0.85v to 1.4v and VCCIO 1.05v to 1.4v no significant effect.

And there is a strange thing, if I manual setting the ram timing and left "REF Cycle time" for auto, the memtest will error in seconds. If I set the same timing with auto value, I can pass the memtest for at least 100%, it's very weird.

Another is I can't boot into OS if I push the ram voltage from 1.35 to 1.36 even 1.40, but I can boot with 1.35v.

Is that bios' problem? Please help me to solve the problem, I just want to run the memory at advertised frequency.
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2 REPLIES 2

tommiboi
Level 7
Why do you have your cache on 4.2 ? O well dont know much about 5960.

But i tried to get my cache up as well. It seems very sensitive and doesnt like to be overlocked. Far is i could read you dont gain on overlocking the cache.

when i was overclocking my cache sometime it ran at 4.4 and past all test. But after a reboot or in games it crashed hard. I just accepted that by cache will not go over 4.1

Any ways thats my experience.
Try more, Try harder, Try and previal

Menthol
Level 14
Kidd232,
You don't list your Video card for reference but your power supply is about minimum for an X-99 build,
Dram voltage up to 1.5 hasn't bothered my X-99 boards but I use 1.4 to 1.425 for 3200MHZ and above, VCSSA 1.0 to 1.2 range sometimes higher is worse, CPU VCIIO 1.1 to 1.2
Have you raised the cache voltage about 1.3 volts max is common, the 16GB sticks may be harder to get stable then 8GB sticks but you did pick some very good modules, the Gskill kits with flat 14-14-14 timings are the easiest to work with