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== Haswell-E Overclock Leaderboard & Owners Club == - Page 1736

post #17351 of 22163
More testing. Loving this new chip.

48/44 @ 1.98v Input /1.325 core/1.225v ring

    
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post #17352 of 22163
Quote:
Originally Posted by Desolutional View Post

Yes you can try that. ~0.860V is +0.001V offset. You will need to fine tune it to attain max stability.
kay so i did everything manually. I set my ram frequency to its rated 2666mhz left ram voltage on auto (which bios is setting to 1.388max, is this okay?) and manually entered the timings to corsair specification which are 15 17 17 35 left everything else on auto and set vcssa +0.001. Other than that the only things i have changed in bios are my core frequency to 4.5, voltage to adaptive mode 1.285, vccin to 1.95 and i disabled svid for both cpu and ram. Am i good or did i miss anything? by the way before i did anything to ram i passed occt for 8 hours with the vcore manually set to 1.285 and the vccin to 1.95 and I rendered a one an a half hour video at 1440p 60fps which took 8 hours to render and that was with vcore at adaptive mode of 1.285 so i thing my core clock is pretty stable. temps stayed around low 70s
Edited by Teafac3 - 2/27/16 at 3:07pm
post #17353 of 22163
So I'm doing some voltage fudging today, and mess around with input volts. Some people were trying low input voltage and getting rather low. Well I went to 1.675 (Didnt try any lower) and with 4.5GHz core/cache, 1.3v core, 1.2875 cache, there were some differences between 1.675 and 1.95 input.

Firstly, not a difference, both were perfectly stable on prime95 (I really wanted to push power consumption to try to get input voltage to be the fault).

Low input voltage vs high input voltage causes a much higher VRM temperature. With a 60mm 4k rpm fan blowing directly on VRM, I got 79C peak with 1.675v input, and 66C peak with 1.95v input. This is likely due to higher current being pushed through the chips to make up for the lower voltage.

The FIVR does not seem to care between low and high. Low vs high showed no discernible difference in power consumption at the wall, and no discernable difference in CPU temperatures (Using a strong liquid cooling setup, Coolant was 31C steady).

The only other difference i saw was estimated CPU Package Power, where estimation was 11.44% higher with low input volts vs high input volts (363.548W vs 326.223W respectively)

This leads me to think that while FIVR might not care what voltage you're feeding it, you're better off giving it a higher voltage than lower for the sake of keeping your motherboard's VRM temperature in check, and keeping input current per CPU pin lower.

_____________________

Also unrelated to the above, but I've just tried BIOS 1902 for the RVE, and it fixed my 3000MHz RAM divider for 100MHz BCLK @ Room temperature. I could not for the life of me get it stable again since it was subzero (BIOS 1802?).

It also seems to be pulling more power @ the same volts, which is why some people are claiming they need less volts now (maybe internally pushing more volts than it tells you? who knows)
Edited by ssateneth - 2/27/16 at 3:29pm
post #17354 of 22163
I don't know your methodology for testing VCCIN requirement, but sure thing is that if it's too low it would fail x265 bench @ 4K overkill and 4x preset, due to a too big disparity between overkill instances, for me.
I have yet to see higher than 49°c on the VRM here.
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post #17355 of 22163
Quote:
Originally Posted by Kimir View Post

I don't know your methodology for testing VCCIN requirement, but sure thing is that if it's too low it would fail x265 bench @ 4K overkill and 4x preset, due to a too big disparity between overkill instances, for me.
I have yet to see higher than 49°c on the VRM here.

Would you mind linking this 'x265 bench'? Is it this?

http://x265.ru/en/x265-hd-benchmark/

Or this?

http://hwbot.org/benchmark/hwbot_x265_benchmark_-_4k/

Or something else?
post #17356 of 22163
guys i just set the frequency on my ram in bios to 3200mhz left everything else on auto except cpu core freq 4.5ghz, cpu input voltage 1.95v, vcore 1.285, strap 100 and it booted into windows fine. timings are 17t, 18t, 18t, 36t, 416t, 2t dram voltage 1.55. Am okay? is that dram voltage kinda high?
post #17357 of 22163
DDR4 XMP profiles max out at 1.5 volts. 1.55 should be ok, as long as your memory controller is within half a volt (system agent)
post #17358 of 22163
Quote:
Originally Posted by ssateneth View Post

DDR4 XMP profiles max out at 1.5 volts. 1.55 should be ok, as long as your memory controller is within half a volt (system agent)
my system agent was 1.128v
post #17359 of 22163
what are some good boards that can use two m.2 950's and two pci e x16 slots that are not next to eachother

budget 300-500
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post #17360 of 22163
Quote:
Originally Posted by Scrimstar View Post

what are some good boards that can use two m.2 950's and two pci e x16 slots that are not next to eachother

budget 300-500

There does not yet exist a 2011-v3 board with 2 built-in m.2 slots. If you need 2 m.2's that bad, get an adapter card. The ASRock X99 OC Formula has 2 m.2 slots, though one of them will operate at pci-e 2.0 speeds. But you will not see a realistic scenario where raiding 2 m.2's will give you a human-perceivable speed difference, unless you are mirroring them for data security.
Edited by ssateneth - 2/27/16 at 11:16pm
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