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Overclocking i9-9900KS on Asus Maximus XI Extreme

 
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post #1 of 7 (permalink) Old 01-10-2020, 02:30 AM - Thread Starter
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Overclocking i9-9900KS on Asus Maximus XI Extreme

Hello everyone. I am trying to OC my 9900KS to 5GHz all core, AVX offset 0 with the minimum offset voltage. I don't know if I am a winner @ Sillicon lotery, it is the second 9900KS (first was idling at 30 celsius on 7 cores and on 8th core 50 celsius, got this new one from intel RMA), upgraded from a i7-2600K OCed @4.5GHz.

Right now I am using Load Line Calibration 5, SVID Behaviour on Best Case Scenario and Offset of +45. 5GHz all cores, Multicore Enhancement ON
Latest BIOS version. Cooling with Asus RYUJIN 360. Ram for the moment Exceleram Black Kudos 16GB DDR4 3000MHz CL16 1.35v Dual Channel Kit

Is there any way to keep the CPU cooler using RYUJIN 360? Also, how bad is my CPU based on @ Sillicon lotery luck?
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post #2 of 7 (permalink) Old 01-10-2020, 08:43 AM
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Quote: Originally Posted by Shpongle03 View Post
Hello everyone. I am trying to OC my 9900KS to 5GHz all core, AVX offset 0 with the minimum offset voltage. I don't know if I am a winner @ Sillicon lotery, it is the second 9900KS (first was idling at 30 celsius on 7 cores and on 8th core 50 celsius, got this new one from intel RMA), upgraded from a i7-2600K OCed @4.5GHz.

Right now I am using Load Line Calibration 5, SVID Behaviour on Best Case Scenario and Offset of +45. 5GHz all cores, Multicore Enhancement ON
Latest BIOS version. Cooling with Asus RYUJIN 360. Ram for the moment Exceleram Black Kudos 16GB DDR4 3000MHz CL16 1.35v Dual Channel Kit

Is there any way to keep the CPU cooler using RYUJIN 360? Also, how bad is my CPU based on @ Sillicon lotery luck?
Won't know about your quality until you disable that c-state and downclocking stuff and then post the CPU VID shown at idle, at about 30C or so, (in HWinfo) at 5 ghz.
An 800 mhz VID because of downclocking is worthless.

[email protected] ghz, RX Vega 64, 32GB DDR4, Gigabyte Aorus Master, Seasonic Platinum 1000W, Corsair 760T
Alt: MSI GT73VR Throttlebook with 7820HK @ 4.7 ghz, GTX 1070 MXM TDP mod to 230W, 32 GB RAM
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post #3 of 7 (permalink) Old 01-11-2020, 08:20 PM - Thread Starter
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Quote: Originally Posted by Falkentyne View Post
Won't know about your quality until you disable that c-state and downclocking stuff and then post the CPU VID shown at idle, at about 30C or so, (in HWinfo) at 5 ghz.
An 800 mhz VID because of downclocking is worthless.
Disabled all C-states, disabled SpeedStep and SpeedShift. LLC 5, SVID on Best Case Scenario, voltage offset +45. Thank you!
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post #4 of 7 (permalink) Old 01-11-2020, 09:01 PM
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Quote: Originally Posted by Shpongle03 View Post
Disabled all C-states, disabled SpeedStep and SpeedShift. LLC 5, SVID on Best Case Scenario, voltage offset +45. Thank you!
Hmm. That's a mediocre 9900KS from that VID. It's the same VID as my 9900k. How far can you overclock it and using no higher than LLC 5 ?

[email protected] ghz, RX Vega 64, 32GB DDR4, Gigabyte Aorus Master, Seasonic Platinum 1000W, Corsair 760T
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post #5 of 7 (permalink) Old 01-11-2020, 09:03 PM
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Quote: Originally Posted by Shpongle03 View Post
Disabled all C-states, disabled SpeedStep and SpeedShift. LLC 5, SVID on Best Case Scenario, voltage offset +45. Thank you!
Hmm. That's a mediocre 9900KS from that VID. It's the same VID as my 9900k. How far can you overclock it and using no higher than LLC 5 ?
See how far you can overclock it at 5.2 ghz. (you can use manual vcore if offset is too confusing). Just don't go higher than LLC5.

Can you do 5.2 ghz, 1.42v or lower (Bios set vcore), LLC 5, fully stable?
(LLC5 is close to 1.0 mOhms of VRM Loadline, so it should be fully safe).

[email protected] ghz, RX Vega 64, 32GB DDR4, Gigabyte Aorus Master, Seasonic Platinum 1000W, Corsair 760T
Alt: MSI GT73VR Throttlebook with 7820HK @ 4.7 ghz, GTX 1070 MXM TDP mod to 230W, 32 GB RAM
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post #6 of 7 (permalink) Old 01-14-2020, 09:47 AM - Thread Starter
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Quote: Originally Posted by Falkentyne View Post
Hmm. That's a mediocre 9900KS from that VID. It's the same VID as my 9900k. How far can you overclock it and using no higher than LLC 5 ?
See how far you can overclock it at 5.2 ghz. (you can use manual vcore if offset is too confusing). Just don't go higher than LLC5.

Can you do 5.2 ghz, 1.42v or lower (Bios set vcore), LLC 5, fully stable?
(LLC5 is close to 1.0 mOhms of VRM Loadline, so it should be fully safe).
It can do 5.2 GHz, avx offset -2 due to high temps, CPU VID under load Prime95 non-AVX 5.2GHz is 1.25v.

Tried LLC 5, SVID on Best Case Scenario and offset +100 (I just put a random high offset and it looks stable, did not have time to lower it, also I am working right now and I do not have accesss to BIOS, the settings were applied using AI Suite 3 remotely)

My target would be 5GHz with AVX offset 0 using the lowest voltage to keep it cool (on 5GHz AVX it goes up to 98 Celsius using Ryujin 360 AIO and Thermal Grizzly Cryonaut, 24 Celsius room temp). Do I need to lower the LLC? On LLC 4 I remember the temps were much lower but I had to increase the + offset using the Best Case scenario SVID
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post #7 of 7 (permalink) Old 01-29-2020, 07:47 AM
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I may be missing something, but I just purchased the ks. Out of the box it will Turbo to 5GHz on ALL cores. You could remove time limit in mobo.
Or, if you like it's easy to disable turbo and set the multi to 50. Then (like mine) High power plan, or any load on any power plan will set it to 5MHz.

It's only an above spec OC in terms of how much time it will spend at all cores 5GHz.

I have kept speed step and speed shift on. C1 auto, all other C states OFF. This way unless on High power plan the CPU will quickly downclock
to 800MHz when idle.

Should work on stock voltage IF you have a good cooling solution.

Then from that calculate offset if you wish to go up higher. 5.2GHz should be possible on all cores with offset change (I can't say what because it is
never the same, I have use a minus offset value. Regardless, this SKU demands good liquid cooling, AIO. Personally I just don't think anything on air
will cut it. Too slow to respond, and wow, these chips suck up the juice. That reminds me, good mobo, most important high quality VRMs.

I use an Asrock Phantom X - released for this cpu in particular back in June. It is 14 phase, chunky VRM cooler, and high quality VRM components to boot.
Not cheap, but less than the CPU of course. X supersedes the Phantom 9 which is also good enough. The X may even be overkill, but I'd rather that than
smoking VRMs.

I didn't use silicon lottery shop (I have before) as ks is soldered, and Intel bin them. Supposedly only the best 9900 are put in the ks bracket,
the rest are regular i9 9900k. Same chip, but binned. It also means that for a while it's less likely to get a golden 9900k as the golden ones
will be set to ks config.

Let us know how it goes! Enjoy!!

i7 8086k de-lidded @ 5.20GHz. GTX1080ti ftw 3. Taichi z370.
Trident z cl15 2 x 8GB sticks. Acer XB270HU 1440p 144Hz IPS 27 inch G-Sync
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