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Broadwell-E thread - Page 47

post #461 of 7480
Quote:
Originally Posted by coolbho3k View Post

Latest BIOS, 0602.

It was a Ripjaws 64GB CL16 3400 dual channel kit.

This is supremely disappointing, it looks like 1.3+ VCCSA was considered to be unsafe on Haswell-E and the BIOS was setting it well above that.

Auto settings should ALWAYS err on the side of SAFETY.

If that were the case, there would be many more users with failure to post/boot. Are you using the XMP settings and Auto voltage? Remember - Auto is a four letter word... even worse when you use two: Auto Volt. wink.gif
But generally the auto rules work fine keeping in mind that most users will not attempt to run 64GB of ram, and a dual channel kit nonetheless. What s that a 4x16GB ram kit?
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post #462 of 7480
Quote:
Originally Posted by Jpmboy View Post

If that were the case, there would be many more users with failure to post/boot. Are you using the XMP settings and Auto voltage? Remember - Auto is a four letter word... even worse when you use two: Auto Volt. wink.gif
But generally the auto rules work fine keeping in mind that most users will not attempt to run 64GB of ram, and a dual channel kit nonetheless. What s that a 4x16GB ram kit?
Yes, it's 4 x 16. Setting system agent voltage back to default the board also boots and stress tests fine at the 3000 MHz CL15 I'm running at. The behavior is the same on both XMP and manual modes.

I'd prioritize failure to boot over too high voltages in auto, as it's better to have to clear CMOS than have a dead CPU
post #463 of 7480
well

considered to be unsafe

and unsafe

are two different things

and auto settings err on the side of safety... that's pretty much never been true. They err on the side of stability. The whole point of auto bios settings is for a random person to be able to plug and play.

If you run with auto settings that means you're rolling with ~medium LLC, SVID support on both RAM and CPU, and definitely at the very least .2V more than you need on Vcore.. +whatever the SVID will add under load. Auto errs on the side of POSTing, not safety.

And if you think that VCCSA will kill your CPU, that's fine. But until thats proven, you can't really claim that for sure with broadwell-e. You keep saying too high voltages.. but that is for Haswell-E.. and I haven't see nany issues on some that I've pumped up to 1.32
post #464 of 7480
Some quick preliminary testing on the 6900K and Deluxe II. 4.3@ 1.28v with 4x8GB 3200C15 2T. 1.92v VCCIN, 0.8v IO / 1.15v VCCSA.


One hour Realbench stable.

post #465 of 7480
Quote:
Originally Posted by Silent Scone View Post

Some quick preliminary testing on the 6900K and Deluxe II. 4.3@ 1.28v with 4x8GB 3200C15 2T. 1.92v VCCIN, 0.8v IO / 1.15v VCCSA.


One hour Realbench stable.

What is your uncore at
post #466 of 7480
Quote:
Originally Posted by coolbho3k View Post

What is your uncore at
Default, these things come secondary - will be testing over the weekend smile.gif
post #467 of 7480
Hm I had my RAM running 1.35v 3200 15-15-15-35 and 3200 uncore at 1.10v, 1.244 vcore at 4.3 GHz. Stable in other stability benches but got error in HCI after like 5 hours.

Tetsting at DDR4 3000 and 3400 uncore at 1.15 now. I"m pretty confident in my CPU voltage, since all of my cpu stability benches are fine for hours and hours. It's pretty low for 4.3 compared to others but will play with it if necessary.
post #468 of 7480
Quote:
Originally Posted by Silent Scone View Post

Some quick preliminary testing on the 6900K and Deluxe II. 4.3@ 1.28v with 4x8GB 3200C15 2T. 1.92v VCCIN, 0.8v IO / 1.15v VCCSA.


One hour Realbench stable.


nice! What's the vcore at load (or actually - whats the bios idle vcore...). Tell us more!
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post #469 of 7480
Long time lurker first time poster! I just updated my 6700k system to a 6800k system and I'll tell you what, the 6C/12T is a monster no matter how you slice it on multi-core (Adobe Premiere primarily for me).

Here's brief look at my setup:
- MSI X99A Gaming Pro Carbon
- i7-6800k
- Corsair Vengeance LPX 16GB Dual Channel (Need to go quad channel 32GB)
- Corsair H115i

I've managed to get my -7-6800k stable at 4.4GHz @ 1.42VCore. Temps are hovering in high 60's and low 70's and I feel pretty happy with it. I've noticed that 4.4GHz is the cliff on this chip and voltages and temperatures fall off sharply. I think the lottery for this chip is more determined by what voltage you can get away with at 4.4GHz. LOL
post #470 of 7480
Quote:
Originally Posted by goinskiing View Post

Long time lurker first time poster! I just updated my 6700k system to a 6800k system and I'll tell you what, the 6C/12T is a monster no matter how you slice it on multi-core (Adobe Premiere primarily for me).

Here's brief look at my setup:
- MSI X99A Gaming Pro Carbon
- i7-6800k
- Corsair Vengeance LPX 16GB Dual Channel (Need to go quad channel 32GB)
- Corsair H115i

I've managed to get my -7-6800k stable at 4.4GHz @ 1.42VCore. Temps are hovering in high 60's and low 70's and I feel pretty happy with it. I've noticed that 4.4GHz is the cliff on this chip and voltages and temperatures fall off sharply. I think the lottery for this chip is more determined by what voltage you can get away with at 4.4GHz. LOL


Better cooling will possibly help mitigate the voltage required
Quote:
Originally Posted by Jpmboy View Post

nice! What's the vcore at load (or actually - whats the bios idle vcore...). Tell us more!


Easy tiger, just got everything up and running tongue.gif

Vcore at load is 1.28v BIOS idle is 1.032v. Using adaptive, and offset for cache. Doing some cache testing in AIDA at 3.7 with 1.175v on offset.

Memory is a cheap Corsair 2666 Hynix LPX kit I picked up for the time being running at 3200C15 2T and 1.15v VCCSA via offset. Realbench and HWBOTx265Benchmark core temps hover around 55c. That is with 1500mm of radiator space and 25c water temps at load
Edited by Silent Scone - 6/16/16 at 11:28pm
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