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Broadwell-E thread - Page 257

post #2561 of 7252
From a post by Fiery back in 2011 on the Aida forums:

"AIDA64 follows Intel's public DTS specifications, hence it should measure the right values if you have the right TJMax value configured. Automatic value means AIDA64 will take the TJMax value published by Intel, hence it should be the right one to use."

I have a request for some more info, let's see if we get some.
post #2562 of 7252
Finally back in front of the 6950x for some experimentation with SA undervolting...

Previous, very stable starting point - weeks in this config under heavy usage without issue:
RVE
128G - 8x16G 3000CAS14@1.35
4.4@1.35
3.7@1.29
SA@Auto (but it was reliably at 1.2 when left as such under load)

I had previously experimented with SA and while I could boot/run as low as 1.15, ultimately that failed to prove stable-stable (vs the Benchmark standard of seeing a win10 desktop ;-))

So far I've tried:
a. -0.200 (produced a 0.675v reading of VCCSA in aida64!! How does that even boot? but it does...)
b. -0.100
c. +0
d. +0.100
e. +0.200

All crashed. Auto@1.2 remains stable aid64, handbrake,rb, linux, stresssapp, real-world load, etc... no issues. I am only exploring this to see if I can lower vcore and maintain the OC.

Here's the odd part, in terms of length of time to crash and severity of the crash - from most stable to least, it was a,b,c,d,e... "a" ran aida64 stress for about 10m without issue despite the absurd voltage reading. Then it spontaneously rebooted. Others got a fraction of that with d&e crashing pretty much immediately.
Edited by cekim - 8/24/16 at 6:03pm
post #2563 of 7252
@cekim, I think you're going to miss sweet spots using .1 increments. I have found mine using .01, my best ones being .13 and .21 (my current) offsets. The diff between .2 and .21 was 45 minutes (.2) vs. almost 3 hours (.21).
post #2564 of 7252
Quote:
Originally Posted by djgar View Post

@cekim, I think you're going to miss sweet spots using .1 increments. I have found mine using .01, my best ones being .13 and .21 (my current) offsets. The diff between .2 and .21 was 45 minutes (.2) vs. almost 3 hours (.21).
Oh, I know, it was a quickie, I was just very surprised it even ran down there...
post #2565 of 7252
So I just ordered my classified and 6800k, moving up from Phenom II 955, I dont think ill regret it lol
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post #2566 of 7252
Wow. So I somehow killed my first CPU ever. 6800K, completely dead. Tried a fresh board, 00 post code. It was in a X99 strix when it shutdown twice. On the second shutdown all life was gone.... Overnighted a X99 deluxe, and same thing, thought it was the board at first...

frown.gif Luckily silicon lottery has my back and will replace the CPU.

Has anyone here manage to kill a CPU yet? This was within reasonable voltages.

X99 Strix, 4x16GB TridentZ 3200.

<1.33Vcore @ 4.4ghz

1.88 VCCIN Level 5 LLC

1.15VCache @ 3.5Ghz

1.000 VCCSA

1.35Vdimm
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post #2567 of 7252
Nope, take some serious effort (aside from bashing it with a hammer) to kill a CPU. And I have been in this business since the 80286 days (building computers)
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post #2568 of 7252

Goden chip? Or ITX X99 really rocks!

6800k OCed 4.5GHz(4.5GHz AVX/FMA) @1.325 volts on Asrock X99 itx
3.5uncore @ 1.25v
Vin: 1.90v with LLC 2 (1 to 5 with 5 being no LLC)
16Gx2 DDR4 @ 3200MHz 15-15-15-35 2T, 1.35v
SA: +0.350v
VCCIO: 1.05v

6hours of Prime95 28.9 without error
Good chip or dual channel DDR4 really helps push my core
Edited by Coopiklaani - 8/25/16 at 4:24pm
post #2569 of 7252
Quote:
Originally Posted by cookiesowns View Post

Wow. So I somehow killed my first CPU ever. 6800K, completely dead. Tried a fresh board, 00 post code. It was in a X99 strix when it shutdown twice. On the second shutdown all life was gone.... Overnighted a X99 deluxe, and same thing, thought it was the board at first...

frown.gif Luckily silicon lottery has my back and will replace the CPU.

Has anyone here manage to kill a CPU yet? This was within reasonable voltages.
Warning: Spoiler! (Click to show)
X99 Strix, 4x16GB TridentZ 3200.

<1.33Vcore @ 4.4ghz

1.88 VCCIN Level 5 LLC

1.15VCache @ 3.5Ghz

1.000 VCCSA

1.35Vdimm

Yeah, as I mentioned on the phone I don't think it has anything to do with your overclock. It was destined to die relatively quickly either way. Will be the first dead Broadwell-E chip we've had out of hundreds if it doesn't work over here either.

Quote:
Originally Posted by Coopiklaani View Post

Goden chip? Or ITX X99 really rocks!

6800k OCed 4.5GHz(4.5GHz AVX/FMA) @1.325 volts on Asrock X99 itx
3.5uncore @ 1.25v
Vin: 1.90v with LLC 2 (1 to 5 with 5 being no LLC)
16Gx2 DDR4 @ 3200MHz 15-15-15-35 2T, 1.35v
SA: +0.350v
VCCIO: 1.05v

6hours of Prime95 28.9 without error
Good chip or dual channel DDR4 really helps push my core

Fantastic silicon, dual channel helps a little bit but not that much.
post #2570 of 7252
Quote:
Originally Posted by cookiesowns View Post

Wow. So I somehow killed my first CPU ever. 6800K, completely dead. Tried a fresh board, 00 post code. It was in a X99 strix when it shutdown twice. On the second shutdown all life was gone.... Overnighted a X99 deluxe, and same thing, thought it was the board at first...

frown.gif Luckily silicon lottery has my back and will replace the CPU.

Has anyone here manage to kill a CPU yet? This was within reasonable voltages.

X99 Strix, 4x16GB TridentZ 3200.

<1.33Vcore @ 4.4ghz

1.88 VCCIN Level 5 LLC

1.15VCache @ 3.5Ghz

1.000 VCCSA

1.35Vdimm

My first dead 6800k was also with a Strix x99 with 1.25v and light overclock to 4ghz (no cache/ram overclock, no xmp). Cpu dead while browsing web. My case was computer shutdown once, code 00 + cpu led light up; clear CMOS and I was able to get into bios/windows, then one or two reboots later it died for good tongue.gif.

Quite a few people on newegg have the same issue with the strix board too.
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