8700K on Fatal1ty K6 OC 5.2 random bsod - Overclock.net - An Overclocking Community

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8700K on Fatal1ty K6 OC 5.2 random bsod

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post #1 of 29 (permalink) Old 08-09-2018, 08:19 PM - Thread Starter
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8700K on Fatal1ty K6 OC 5.2 random bsod

Delidded Chip was binned @ 1.387V Core with -2AVX @ 4.9 GHz
but not accepting lottery defeat, added a H1101i (dual 140mm) with push pull config (560 mm -l)
and DDR4 3200 to get 1.435V Core with -2AVX @ 5.2 GHz instead


IMO temps look good, but getting random bsod after 30 min, which sounds like thermal issue?


The rig runs rock solid at binned settings (4.9) so maybe its the wafer or my cheap video card?

Change the AVX to 7, and seems stable so far, but not sure why that would help? So, its is voltage issue ?

Thanks in advance if anyone has any insight.

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Last edited by -MidnightMan-; 08-09-2018 at 10:27 PM.
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post #2 of 29 (permalink) Old 08-10-2018, 01:37 PM - Thread Starter
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UPDATE: knock on wood, no bsods since raising AVX from -2 to -7.

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post #3 of 29 (permalink) Old 08-10-2018, 02:05 PM
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You just might not have hit the lotto with that chip. Doesn't seem like it is scaling as you keep adding voltage.
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post #4 of 29 (permalink) Old 08-10-2018, 05:47 PM - Thread Starter
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Quote: Originally Posted by Moparman View Post
You just might not have hit the lotto with that chip. Doesn't seem like it is scaling as you keep adding voltage.
agreed-- scaled back to 51x100 -2AVX, vcore 1.43v
UPDATE: made above changes, now vcore is 1.504v
What is a damaging voltage for an i7-8700k ?


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Last edited by -MidnightMan-; 08-13-2018 at 12:37 PM.
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post #5 of 29 (permalink) Old 08-22-2018, 02:59 AM
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That vcore is too high for a daily 24/7 oc.....and you will note no benefit from lets say 4.9 ghz to 5.2....

IF I were you I'd lower the vcore and reduce OC to 4.8 which is more than enough for any gaming nowdays.
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post #6 of 29 (permalink) Old 08-22-2018, 03:06 AM
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Have you tried using the CPU with some random old keyboard and mouse? Without all the bling bling.

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post #7 of 29 (permalink) Old 08-22-2018, 03:27 AM
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What SiliconLottery had to say.

https://twitter.com/CherryPickedCPU/...88434598612992

If you're on a late batch 8700K, chances are that you aren't going to see a great overclocker. They're absorbed into the 8086K SKU.

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post #8 of 29 (permalink) Old 08-27-2018, 06:25 PM - Thread Starter
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Thankyou everyone for the feedback. From encrypted11 link I can see I missed the lottery boat by about 7 months, so I have reduced the vcore by Goa80 advice. Except, I paid for Silicon Lottery binning when chip was delidded, so will use those findings:
@ 1.387V Core with -2AVX @ 4.9 GHz

However, I dont seem to be able to replicate 1.387V core. When I set vcore to auto :



Which is a marked improvement from 1.5V 24/7, but not the 1.387v target.
So I set vcore FIXED at 1.387, it changes instantly to 1.385 with this result:



Need help here please, is setting vore to FIXED dangerous?

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post #9 of 29 (permalink) Old 08-27-2018, 07:44 PM
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Fixed is the safe bet for overclocking. Nothing dangerous unless it's too high.

If you run your chip well over the binned clocks at a Voltage of 1.5V or more (and who knows what sort of LLC you're running) you can damage the chip a bit. That damage shows up as requiring a higher VCore across the speed spectrum.

You can probably still make the 1.387V Core with -2AVX @ 4.9 GHz, but you may just need to run it turbo'd only on a single core and keep Ring Ratio @ ~40-44.

What is your LLC setting, btw?

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post #10 of 29 (permalink) Old 08-27-2018, 10:08 PM - Thread Starter
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LLC is Level One @1.392V

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