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post #21 of 1987 (permalink) Old 11-01-2018, 01:37 AM
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Quote: Originally Posted by tostitobandito View Post
If you are stable at 5.1 and 1.26v that seems pretty damn good. I wouldn't complain about that. I also wouldn't go beyond that for 24/7 use. As you found out, you start needing a lot more voltage to get to 5.2 and 5.3.
I agree. Good, sensible advice.

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post #22 of 1987 (permalink) Old 11-01-2018, 03:37 AM
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Damn there are some good 5Ghz+ voltages in this thread. A lot of the youtube reviewers needed 1.35V+ for 5Ghz stable, much like many 8700k's (mine included). I really hope my 9900k will do 5Ghz under 1.30V in my custom loop. Hoping to keep the temperatures reasonable since it will be sharing a loop with a 2080Ti (two 360 rads).

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post #23 of 1987 (permalink) Old 11-01-2018, 04:25 AM
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Yeah, that's too high, as for me. Moreover, it's not that much was changed since 8700K, only +2 cores and + ~20% ring additional space, so why is it so hot? And I think it's not only about thicker die - I beleive Intel is just screwing everyone all over again with their STIM being complete sh**t.

IMHO, taking into account awfull pricing in eu region and zero OC improvements (even negative), I consider 9900/9700 as an replacement for my 8700 less and less
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post #24 of 1987 (permalink) Old 11-01-2018, 12:53 PM
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Quote: Originally Posted by kuma.hime9 View Post
I have questions!!!


I overclocked my 9900k (retail version) using asrock z390 taichi to 5.1 Ghz: Vcore=1.26v, AVX offset=0 (no offset) LLC=level 1

Result:
R15 = 2215 (average)
BMW(Blender benchmark) = 193s
BMW(Blender program) = 201s
stable in Aida64 stress test, Temp= 65 - 78 c (avg temp range) and 82 c (max), (my room temp=24 c)
(I observed that my cpu use a Vcore=1.280v when under stress test load)

My Questions:

1) Is my CPU bad? average? or good? (I am sooo confused)

2) Should I return the cpu for a better lottery?

3) Should I try to overclock to 5.2Ghz for daily usage?



I have tested 5.2Ghz... but for some reason, I couldn't get it stable in Blender. For some reason, my cpu is stable in aida64 stress test (with avx test), but never stable in blender at 5.2Ghz.
I tried Vcore=1.4v (in BIOS) with LLC=level2 and the resulting Vcore(under load during test)=1.409v <--- Stable in aida64, but not stable in blender!









Note: Please feel free to post your overclocking results for 9900k below, what's everyone's overclocking results? I want to know!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!






~
Have you tried increasing your LLCR to level 5 or 6 to see if that helps stabilize your overclock? Disable all C-states, turbo boosting, etc. I'm at 5.2Ghz at 1.30v on all cores idle at 30c load 50-70c. Completely stable. Could just be silicon lottery.

forgot to mention I am on one of the 12 phase VRM boards, the Gigabyte Aorus Master z390, which may have helped stabilize my clocks from what I'm reading some 300 boards may not overclock well.

Last edited by slinkys4evrh; 11-01-2018 at 01:01 PM.
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post #25 of 1987 (permalink) Old 11-01-2018, 02:11 PM
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Quote: Originally Posted by slinkys4evrh View Post
Have you tried increasing your LLCR to level 5 or 6 to see if that helps stabilize your overclock? Disable all C-states, turbo boosting, etc. I'm at 5.2Ghz at 1.30v on all cores idle at 30c load 50-70c. Completely stable. Could just be silicon lottery.

forgot to mention I am on one of the 12 phase VRM boards, the Gigabyte Aorus Master z390, which may have helped stabilize my clocks from what I'm reading some 300 boards may not overclock well.
Maybe I'm thinking of another vendor, but I think Asrock LLC is opposite so 1 is already highest. I'd daily up to 1.3v, so both look good. It's fun to see how far it would go, but even with non-throttling temps, north of 1.4v just to get that extra 100-200 MHz, meh, sure for some benches, but no point otherwise.

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post #26 of 1987 (permalink) Old 11-03-2018, 05:53 PM
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I'm stable @ 4.9Ghz - 1.225v with auto LLC on my 9900k

I'm able to get 5.0Ghz to boot into windows @1.25v, but with my board being a Z370-A i'm not going to push any higher and blow my board up. 5.0 Would probably be stable around 1.275v.

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post #27 of 1987 (permalink) Old 11-03-2018, 11:01 PM
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I hit 5 Ghz too at like 1.23v and I run a bunch of benchmarks and games no problem but when I start Prime 95 stress test it goes to 100C degrees on my Corsair H110I GTX (assuming you unlock all power limits in the bios).... For me at least that's not a normal overclock. I am simply not leaving it to run more than 10 minutes at 100C and i don't consider this a stable overclock at all. In my opinion for air coolers and most AIO's in cases (not open benches), 5 Ghz is not that easy for proper stability. You can make it run becnhmarks and games but if it gets loaded anything harder it will not be stable at 5 Ghz for long. At least those are my impressions after playing with a 9900K on a Maximus 11 Hero for a day.

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Last edited by DokoBG; 11-03-2018 at 11:07 PM.
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post #28 of 1987 (permalink) Old 11-03-2018, 11:09 PM
 
 
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Working on my 9900k overclock...
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post #29 of 1987 (permalink) Old 11-06-2018, 03:34 PM
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Quote: Originally Posted by porksmuggler View Post
Maybe I'm thinking of another vendor, but I think Asrock LLC is opposite so 1 is already highest. I'd daily up to 1.3v, so both look good. It's fun to see how far it would go, but even with non-throttling temps, north of 1.4v just to get that extra 100-200 MHz, meh, sure for some benches, but no point otherwise.
Correct. I have z370 AsRock Taichi and 1 is indeed the highest. I have found 2 to suite me best on my 8086-delid @ 5.1GHz. 1 seemed to me to pretty much eliminate vdroop completely. 2 is nice and subtle. (Of course there is no one size fits all. Case by case.) but on my system it's like a kind of gentle safety feature with AVX running. It's never once crashed. For once I think I got lucky with my silicon. BTW I run all the main stress tests. Temps are high sixties to mid seventies. Except for prime 95 AVX small ffts which push it right into the mid 80c range. Voltage drops to 1.296 or 1.28v.

I think I will stop using that because it's just not realistice. The load is massive. Most tests I run for 1 or 2 hours. But prime small ffts avx no more than 10 minutes. I don't see the point in pushing it to such extremes when the PC is primarily a gaming rig.

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post #30 of 1987 (permalink) Old 11-06-2018, 03:37 PM
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Quote: Originally Posted by DokoBG View Post
I hit 5 Ghz too at like 1.23v and I run a bunch of benchmarks and games no problem but when I start Prime 95 stress test it goes to 100C degrees on my Corsair H110I GTX (assuming you unlock all power limits in the bios).... For me at least that's not a normal overclock. I am simply not leaving it to run more than 10 minutes at 100C and i don't consider this a stable overclock at all. In my opinion for air coolers and most AIO's in cases (not open benches), 5 Ghz is not that easy for proper stability. You can make it run becnhmarks and games but if it gets loaded anything harder it will not be stable at 5 Ghz for long. At least those are my impressions after playing with a 9900K on a Maximus 11 Hero for a day.
Sorry, I missed your post before mine above. Anyway, we both share the same opinion. Even down to the 10 minutes bit!

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Trident z cl15 2 x 8GB sticks. Acer XB270HU 1440p 144Hz IPS 27 inch G-Sync
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