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[HELP] Attempting OC on 9700k with aorus z390 ultra

 
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post #1 of 5 (permalink) Old 04-27-2019, 02:12 AM - Thread Starter
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[HELP] Attempting OC on 9700k with aorus z390 ultra

Hello, I'm trying to overclock my new pc but since I'm new to OC I would like to have some feedback about results and if what I'm doing is wright.
Intel 9700k with aorus z390 ultra
That's the complete build: https://it.pcpartpicker.com/b/T4V6Mp
I read some guides and I started with a slight overclock (4.7-4.8 GHz); anyway I don't want to push it at much more higher values in order to keep temperature and noise lower.
-Test1:

cpu Vcore 1.25V, cpu clock ratio 47, AVX offset AUTO, core current mimit 255, XMP active, undercore ratio 45, cpu Vcore loadline calibration TURBO, cpu internal loadline AUTO,
I DISABLED: Enhanced multi-core performance, Intel Turbo boost technology, cpu flex ratio override, intel speed shift technology, C1-C3-C6/7-C8-C10 state support, SVID offset
(pased 30 min with prime95, maxT 66°C)


(in the following tests, all settings are the one of test1 excepts what listed below)
Test2: cpu Vcore 1.23V (passed 1h of realbench)
Test3: cpu Vcore 1.215V (passed 1h of realbench)


Test4: cpu Vcore 1.215V, cpu Vcore loadline calibration HIGH, cpu clock ratio 48 (passed 1h of realbench)
Test5: cpu Vcore 1.205V, cpu clock ratio 48 (passed 45min of realbench)
Test6: cpu Vcore 1.215V, cpu clock ratio 48, AVX 0 (passed 2h of realbench)

Test7: cpu Vcore 1.210V, cpu clock ratio 48, AVX auto (passed 90min prime95)
Test8: cpu Vcore 1.200V, cpu clock ratio 48, AVX auto (passed 1h prime95)


I started having freezes during the bench if I set AVX to values different from 0 or auto with prime95 after approximatively 15min. I increase uncore to 46 the system crashes with both prime and realbench.
Even if at 1.200V the system seemed stable, during 3DMark bench it started crashing; increasing Vcore to 1.205 allowed to pass the bench.
In the latter cases temps are close to 57°C with realbench and 60-61°C with prime95.

Rusults are in the dropbox link. (I will update it after furter tests)
https://www.dropbox.com/sh/4guar25fn...kY9vSLRBa?dl=0


Any advices? temperatures are ok? there's something I should modify in BIOS settings?
intel speed shift technology, C1-C3-C6/7-C8-C10 state support should be kept deactivated?
For now I started with a lower OC, maybe further on I will increase it.

Thanks for the help
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post #2 of 5 (permalink) Old 04-27-2019, 04:17 AM
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There is little reason to raise the cache clocks. Just leave it at 45. It adds less than memory overclocking even.

You have a lot of thermal headroom left. You should be able to do 5 ghz 1.3v ish with that chip. Thats were mine is at I can do 4.8 at 1.215v.

Its ok for temps to get close to 90c during synthetic stress testing. I aim for 85c or less but these cpu can get really hot.

You dont have to disable the cstates individually. I disabled intel turbo boost and Eist and then none of the cstates do anything.

CPU
i9 9900k
Motherboard
Gigabyte z390 Aorus Pro
GPU
Msi 1080ti gaming x
RAM
Corsair DDR4 3000mhz cl 15
Hard Drive
Crucial MX500 500 gb
Hard Drive
Crucial MX500 1tb
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2tb WD 5400 rpm
Power Supply
Seasonic G-750
Cooling
EK XRES 140 DDC Top
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swiftech MCP-35X
Cooling
Gentle typhoon AP-15 X 3
Cooling
Be quite 140mm
Cooling
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Cooling
Hardware Labs 240mm GTS
Cooling
EK Supremecy MX
Cooling
Ek 360mm pe rad
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Ek msi 1080ti gaming x waterblock
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post #3 of 5 (permalink) Old 04-27-2019, 08:05 AM - Thread Starter
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Thanks, I will definitely try to go up to 5GHz.
Does it worth to disable all those energy saving features? I mean, when I'm not gaming I don't really need to have all working at max; enabling them it helps to keep the cpu cooler and so to reduce the noise?
Should I touch other settings in the BIOS or it's enough to reach a stable OC?


EDIT: I just tried to go up to 5GHz at 1.300V; I left the other settings same as the last test at 4.8GHz.
The sytem seems quite stable; passed almost 1h of prime95 with temps ranging between 69 to 73 °C and VR VOUT oscillating from 1.243V to 1.252V (most of the time close to 1.243V)
I added the screenshot to the dropbox folder (test9)
Probably I can reduce a bit the Vcore

Last edited by tommy2911; 04-27-2019 at 09:02 AM.
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post #4 of 5 (permalink) Old 05-06-2019, 05:14 PM
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I’d try setting VCore up a hair more, maybe 1.31. I had 1 worker failing at 1.3, but stabilized for me after that slight bump. 1.2 ranges are likely too low, or at least were on my setup (same combo).

Edit: Sorry, missed that you got it stable at lower voltage!


Last edited by insektmute; 05-06-2019 at 05:19 PM.
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post #5 of 5 (permalink) Old 05-07-2019, 05:14 PM
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Quote: Originally Posted by tommy2911 View Post
Thanks, I will definitely try to go up to 5GHz.
Does it worth to disable all those energy saving features? I mean, when I'm not gaming I don't really need to have all working at max; enabling them it helps to keep the cpu cooler and so to reduce the noise?
Should I touch other settings in the BIOS or it's enough to reach a stable OC?


EDIT: I just tried to go up to 5GHz at 1.300V; I left the other settings same as the last test at 4.8GHz.
The sytem seems quite stable; passed almost 1h of prime95 with temps ranging between 69 to 73 °C and VR VOUT oscillating from 1.243V to 1.252V (most of the time close to 1.243V)
I added the screenshot to the dropbox folder (test9)
Probably I can reduce a bit the Vcore
I have all power saving features enabled for 5.0GHz overclock and I save 19 watts at idle.

i5 8600K OC 5.0GHz
Noctua NH-U14S
Motherboard Gigabyte Z370-HD3
G.SKILL Ripjaws v 16GB F4-3200C14D-16GVK XMP Speed 3200 14-14-14-34
EVGA GeForce RTX 2070 XC ULTRA GAMING
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