i9 9900X 10 core overclocking

AndyOcUK · 20 Feb 2019 at 18:46

Can't seem to find much on google be it reviews or overclocking on the 10 core i9 9900X.

Plenty on the 8 core 'K' variant.

Anyone here tinkered with one? Interested in what OC's, VCore and temps folk are getting.
(This is for a project that needs this specific CPU's 10 physical cores for a very specific workflow so please no "Just get the K" comments. Price/ bang for buck/ game performance etc are not important.

)

Cheers all

HRL · 21 Feb 2019 at 21:20

I posted something similar in the CPU thread but got bugger all responses too.

From what I can gather you can get 4.5 or 4.6Ghz all cores fairly easily as long as your cooling is good enough. No idea on voltages though.

AndyOcUK · 27 Feb 2019 at 18:49

Currently prime stable at 5GHz 1.29V, AVX -3, HT off, LLC Level 4 with Corsair H110i Pro 128GB QC Corsair Vengeance 3000MHz XMP and Quadro P5000.
Hitting 84 degrees before AVX kicks in.
Rock solid in Cinebench, SpecPerfView, Realbench etc at the 5GHz.

VERY hot running chip. Only 10 thread software will be run on this hence HT disabled. Core count is more important than clock speed.

Still staggered at the lack of opinions/ benchmarks/ OC guides etc. There's literally NOTHING that google turns up. Weird.

HRL · 1 Mar 2019 at 17:47

Agree completely about the lack of info online.

Cheers for the info though, I shall let my buddy know.

SharkGTX · 26 Mar 2019 at 00:42

i9 9900X @ 5Ghz 1.25V HT On and 5.2Ghz 1.32V HT On / Thermal: Greezly Cryonaut / ROG Rampage VI Extreme
Separate [CPU+MB] watercooling loop = 3x TFC XChanger 360 (60mm thickness) with 18x 120mm fans + D5 Vario

wookiee87 · 26 Mar 2019 at 20:53

from my understaning the 9900x is basically a 7900x but with soldered ihs and a boost to stock and turbo clocks, the new 9900x should still use the same 14nm process so if you are stuck look at 7900x overclocking tutorials as a rough guide and you wont go far wrong.
i've got a 7900x which i have at 4.6ghz on all cores plus ht enabled at 1.175v and its rock soild, just tips the early 70's under load in games, benchmarks are a bit hotter normally tip 81 at that point, just be sure to have a beefy cooling setup as if you dont that wil impact heavily on how far you can overclock.
for refrence i have a ek pe 360mm rad with corsair ml120 pro rgb 120mm fans and there pretty dam quite even under heavy load

SharkGTX · 27 Mar 2019 at 10:04

wookiee87 said:
from my understaning the 9900x is basically a 7900x but with soldered ihs and a boost to stock and turbo clocks, the new 9900x should still use the same 14nm process so if you are stuck look at 7900x overclocking tutorials as a rough guide and you wont go far wrong.
i've got a 7900x which i have at 4.6ghz on all cores plus ht enabled at 1.175v and its rock soild, just tips the early 70's under load in games, benchmarks are a bit hotter normally tip 81 at that point, just be sure to have a beefy cooling setup as if you dont that wil impact heavily on how far you can overclock.
for refrence i have a ek pe 360mm rad with corsair ml120 pro rgb 120mm fans and there pretty dam quite even under heavy load

not bad, but I am have it with OC to 5.2Ghz 1.32V HT ON

wookiee87 · 27 Mar 2019 at 10:30

yeah i'd have liked to have gone higher but i think i lost the silicon lottery, i didnt mention that it has been delidded and has a custom copper ihs installed plus it and my mobo asus strix x299 has a mono block installed to boot, but on the other hand my fans are set to a stupidly low speed so thats great

might save up and opt for a 9900x ok wont be a super boost but if oc headroom is better why the hell not

rhr1987 · 9 Apr 2019 at 22:14

Hey,

Sorry to dig up an old thread, but this is the only oc forum that I found that even has people using the i9-9900X.

I am pretty new to Watercooling and OC, but not a noob in PC building overall.

So I did build the following:

i9-9900X
Asus Rampage VI Extreme Omega
64GB Corsair 3600Mhz DDR4
2x Zotac RTX 2080Ti

Watercooling from EKWB
Asus Rampage VI Mono Block
2x RTX 2080 Ti Waterblock
2x D5 pump
2x 250mm reservoir
2x Coolstream CE 420mm (3x 140mm fans) 45mm thick

Thermalpaste Grizzly Cooling Kryonaut.

Open Case Thermaltake Core P7

CPU has their own loop, GPUs have their own loop.

So while the GPUs are as expected idling at 29°C and barely go over 40°C when under full load does the 9900X behave strangely for me.

Unoverclocked it idles at 29-33°C, which is fine.
The moment I load it to 100% it jumps within a second to 60°C with prime95 and slowly increases to around 70°C.

I then started the overclocking and got stable 4,5Ghz on all cores synced with 2,1V VCIN and 1,240 VCore.
Idles at 35-40°C and reaches under prime 85-90°C

Reading here though that some reached 5Ghz with 1,270 VCore I get the feeling I did something wrong...

Can you guys help me understand what I did wrong? XD

Thanks

Radox-0 · 9 Apr 2019 at 22:52

rhr1987 said:
Hey,

Sorry to dig up an old thread, but this is the only oc forum that I found that even has people using the i9-9900X.

I am pretty new to Watercooling and OC, but not a noob in PC building overall.

So I did build the following:

i9-9900X
Asus Rampage VI Extreme Omega
64GB Corsair 3600Mhz DDR4
2x Zotac RTX 2080Ti

Watercooling from EKWB
Asus Rampage VI Mono Block
2x RTX 2080 Ti Waterblock
2x D5 pump
2x 250mm reservoir
2x Coolstream CE 420mm (3x 140mm fans) 45mm thick

Thermalpaste Grizzly Cooling Kryonaut.

Open Case Thermaltake Core P7

CPU has their own loop, GPUs have their own loop.

So while the GPUs are as expected idling at 29°C and barely go over 40°C when under full load does the 9900X behave strangely for me.

Unoverclocked it idles at 29-33°C, which is fine.
The moment I load it to 100% it jumps within a second to 60°C with prime95 and slowly increases to around 70°C.

I then started the overclocking and got stable 4,5Ghz on all cores synced with 2,1V VCIN and 1,240 VCore.
Idles at 35-40°C and reaches under prime 85-90°C

Reading here though that some reached 5Ghz with 1,270 VCore I get the feeling I did something wrong...

Can you guys help me understand what I did wrong? XD

Thanks

Would try comparing apples to apples first as a baseline. Prime 95 more so if its using AVX is a different test to the others mentioned in this thread (Cinebench, realbench etc)

rhr1987 · 9 Apr 2019 at 22:54

Cinebench did the same results, did set prime to disable AVX

difference was of course how quickly it reached the numbers, prime did just run 10 minutes

Cinebench for 1h.

AndyOcUK · 10 Apr 2019 at 07:19

I got the one in my OP to 5.1. AVX divider is at 4.6ghz. HT Off. Also, as I mentioned, it’s a professional FEA machine so the fans are all at max and it’s going in an air conditioned server room. Obviously you won’t want all that noise.

rhr1987 · 10 Apr 2019 at 08:10

Thanks for the responses so far.

I did notice that you guys take the cooling a few steps further and that is fine.
My fans are running at max (1500rpm).

Still doesn't explain why some are able to run it on 5Ghz with 1,25V.

SharkGTX said:
i9 9900X @ 5Ghz 1.25V HT On and 5.2Ghz 1.32V HT On / Thermal: Greezly Cryonaut / ROG Rampage VI Extreme
Separate [CPU+MB] watercooling loop = 3x TFC XChanger 360 (60mm thickness) with 18x 120mm fans + D5 Vario

Last night I did run Cinebench R20 for another 2h and crashed after 15 minutes multiple times.
So I took the multiplicator down to 44 (BCLK is 100) at 1,240V and it did run through.

I am aware that chips tend to differ, but that much?

On stock speeds, with just the default Asus optimized overclocking active, it runs on 4,1Ghz all Cores with 1,13 to 1,17V on the cores.
I am starting to wonder if those 300Mhz are really worth it.

I also noticed that one of my cores is more than 15° colder than the others.

My only reference is my old 5960X that I overclocked to 4,2Ghz with an NH-D15 and that was running on 66 to 70° with 1,350V.

vapor matt · 13 Apr 2019 at 15:50

rhr1987 said:
Thanks for the responses so far.

I did notice that you guys take the cooling a few steps further and that is fine.
My fans are running at max (1500rpm).

Still doesn't explain why some are able to run it on 5Ghz with 1,25V.

Last night I did run Cinebench R20 for another 2h and crashed after 15 minutes multiple times.
So I took the multiplicator down to 44 (BCLK is 100) at 1,240V and it did run through.

I am aware that chips tend to differ, but that much?

On stock speeds, with just the default Asus optimized overclocking active, it runs on 4,1Ghz all Cores with 1,13 to 1,17V on the cores.
I am starting to wonder if those 300Mhz are really worth it.

I also noticed that one of my cores is more than 15° colder than the others.

My only reference is my old 5960X that I overclocked to 4,2Ghz with an NH-D15 and that was running on 66 to 70° with 1,350V.

the problem is the silicone lottery, no 2 CPU's will clock the same, intel only has to supply CPU's at there given speed, most will over clock a little, some will over clock more and some which are sweet will be cherry picked by system builders.
retail chips you stand more chance of getting a better CPU because no one has been through the OEM tray looking for good samples of the chip, but even retail is no guarantee you will get a good clocking CPU.

high voltage is a killer of CPU's along with IMC's you see plenty on the auction sites where CPU's don't make the grade or have been over volted and over clocked to within an inch of there life. then sold on to try another CPU in the hope of a better clocker.
you either live with your CPU or sell it on and try another to see if it will over clock at lower voltages. its just the way it is.

gandhoel · 6 May 2019 at 02:25

i have 9900x, was 7900x. If you can get silicon lottery 7900x will be better for OC. You can delid 7900x even without IHS using direct die frame, some 7900x can run @5.1-5.2. 9900x soldered IHS, much cooler than 7900x at stock and slightly OC, but not for extreme OC except dare to delid. i build on ITX system witth small case Ncase M1. mine (9900x) can run 4.5 @1.130V 80-85° 4.6 @1.175V temp reach 92°, all with small HSF Noctua NH-U9s. I could run faster with custom loop soon, but i don't expect it will be 5ghz or 5.2 like @SharkGTX , i think you win silicon lottery, i'm jealous with your 9900x

. @rhr1987 your chip may be is not good enough, just sell it and buy another chip like i did,also IMC is not good, try to set ddr4 to 2666 first, it will lower your temp more than 5° and lower Vcore. My first 7900x @4.5 1.185v but IMC was suck,only 3200 C14 quad ch, couldn't faster,even 3466. It could run 4000C18 @1.285 Vcore 4.5GHz, and will get very bad temp. So i ran 4.0 @1.000V 4x8GB3200C14 daily. I sell it and get 9900x with better chip, better IMC (quad ch 4000C18),hope will get 5ghz @1.3 custom loop soon.

roysters · 9 May 2019 at 11:29

I have a 7940x I assume the overclocking principals apply to this CPU to? Trying to find guides for the x299 aurous master but only find z390 stuff.