Alia acta est

[BitMaster]

Did a lot of benchmarks and torture runs...all stable.

 

 

Considered stable at given speeds :D

[BitMaster]

I used prime95 and guess what !?

 

FAIL...it dropped core 3 instantly with the Asus 5G Auto profile :(

 

 

So I went on and worked it all over, by hand and with patience.

 

 

The new Asus Bios offers a new feature that I havent seen on those Z170 boards. Its called AVX Offset and allows you to lower the multi for AVX instructions only. Great idea !

 

Nevertheless, I didnt want to lower too much, rather gain something now that I know it will do RealBench for hours but fail prime95 in less than 1 second, really !

 

I worked my way up from stock to 5.2GHz :) Lots of fails inbetween, lots of dropped cores in prime95, temps to 92°C but in the end it paid out.

 

5.2GHz I have not yet gotten stable, neither for RealBench nor prime95. Both

produce errors, sometimes the PC shuts down with the 0-100% thing. All Ok.

 

Not ONE time the board wouldnt boot, not a single time ! AMazing.

 

Looking back makes me laugh at the Extreme and M9, what a waste of money and time.

 

What I have gotten stable is 5.1GHz for RealBench and prime95. The AVX Offset is "2", which means AVX codes run at x49, everything else, and that is 99% of my world and all of DCS, runs at 5.1G with temps still in the yellow at peaks in prime95, which still produces a lot of heat with AVX at x49, the CPU eats up to 151Watts !!! that's a whoppin' 60Watts more than standard, or 2/3 Power Overdrive, 166% Ampere UP.

My Vcore I have first time ever configured with Offset as well, it is +0.200V.

 

RAM, to my sake, produce no errors, I have made initial runs at 2133 to exclude any RAM errors and only went XMP after first successful runs at stock JDEC and then only XMP again, another loop.

 

To get the machine stable for RealBench not much was needed, I could lower most if not any additional settings like LLC and PowerPhase for RB @ 5G but for prime95 to run stable at even @ 4.9 it needed some more.

 

PowerPhase to max, 140%

LLC to 5 of 7

VRM Switching to 400MHz manual ( Auto is 300 )

PhaseControl to Extreme ( Phase controlled ( THATS WHY I NEED VRM COOLING SOON ! ))

same offset

rest on Auto or as described above.

 

But to not stress this CPU too much over time, I will not use 5.1GHz. It is nice to see it can do it, even run Passmark at 5.2 with 3043 IPS points and 3003 @ 5.1G I can well live with 5.0 or even 4.8 and feel even safer.

 

Temps and power consumption drop considerably with those 2-300MHz that not even DCS uses. At least not with my setup.

 

So next thing will be, after I looked for the peak that was to point out, find the sweetspot where energy consumption, performance and heat are withing a golden triangle. I think, 4.8 is this CPU's sweetspot.

 

 

Didnt think I will crack the 3k Passmark tonight...hehe.

 

need another goal !

 

 

Bit :D

Edited February 11, 2017 by BitMaster