u/Available_Bid1437

WARNING: Before doing anything to LLC please research what your levels do on your own motherboard. Asus does from lowest to highest level 1 to level 8. Asrock boards for example it's reversed!

TLDR: I lowered LLC to level 4 from Auto on my Asus board and it decreased 10C in temperatures at full loads, at the cost of some effective clocks (which weren't much of a difference at least in Aida64 CPU from my little testing at the moment). Will lower it further when I have the time to test.

Hello,

I made a post some time ago (which I deleted) about my 9800x3d which seemed to get to 93-95C with a 420mm AIO on full load tests and I couldn't figure out why, even more because CO didn't seem to affect temperature but increased clocks somewhat. When I posted it here and on AMDhelp some were just as confused as me.

Well today I found out: on my earlier MSI board and now on this new Asus board, LLC was Auto on both. This was a setting I was dreading touching, because it could kill your CPU pretty damn fast. But alas I tried, instead of Auto I tried both LLC level 3, 4 and 5. 3 and 4 were about the same and 5 increased my effective clocks by about 5MHz with a 3-4C increase on temperatures.

So after messing with it, I lost some effective clock with my testing on Aida64 CPU stress. I was getting 5225 clock and 5230-5240MHz effective clock. Now I'm getting 5205MHz effective clocks but temperatures effectively dropped by 10C on full load tests.

So moral of the story, and I know it might be obvious to a lot of you guys here in this sub (even more so with all the tomfoolery with boards that have been killing CPUs), but don't fully trust your Auto settings. Now I'm wondering what the hell was Auto setting it to...

EDIT:

I feel dumb right now... I've had these high temperatures since I've had this exact CPU which has been for about a year. I couldn't understand how people got better temperatures, so I started playing with the BIOS again.

Enter LLC. This is one of the settings I dreaded the most to touch because it's scary that if you don't do it right it will kill your CPU pretty fast so I always put it on Auto. Today I decided to play with it and put it on LLC level 3 and to my surprise I dropped from 93-95C to 85C. Now I wonder what the heck was Auto set to on my earlier MSI board and now Asus board...

Sure I don't get as high effective clock as I was getting as it was on Auto. On Aida64 I used to get 5225 clocks with 5230-5240MHz with it on Auto. Now I get 5225 clocks with 5205 effective on LLC4. But the temperature decrease is there.

Original Post:

Hi, so my 9800x3d is quite spicy when it comes to temperatures, I've done everything I can (including switching boards and messing ALOT with CO, which only affects clocks and not temperature) and at full load (OCCT Extreme AVX2/AVX512 and Aida64 FPU) I still get 93-95C with a 420mm Silent Loop 3. It's summer time and my room is quite hot which doesn't help.

I'm considering delidding my CPU to save it and my AIO from such high temperatures and was wondering if I can do it with a Silent Loop 3. I plan to get Thermal Grizzly's Adapter kit to get it lower enough to touch the dies, but I will probably use PhaseSheet instead of LM for my first application while still having the option to switch to LM later on.

Any feedback would be appreciated!

Hello,

So I've been trying my hardest to make my temperatures in line with what I've seen hundreds of posts regarding 9800x3d and I just can't do it.

Last year I was running my 9800x3d with a NH-D15S, the temperatures were all over the place and reaching upwards of low 80s on Battlefield games and 95C instantly when I ran OCCT or Aida64 FPU. So I decided to finally cave in and buy a 420mm AIO with a new case and 10x140mm fans. I've been seeing alot of people claiming 80-85c full load on stress tests so I decided to try it out.

And instantly 87C with 92C following a few seconds after, with Aida64 CPU+FPU+Cache I get 77-78C. This was at stock mind you (PBO off). Then I decided to test some stuff, PBO ON yielded the same results, PBO with CO -10, -15 and -20 yielded the same results. The only differences was on Vcore with no impacts to temperature.

Max peaks of Vcore (this is not the same as full stress testing):

- PBO ON : 1.27V

- PBO -15 : 1.217V

- PBO -20 : 1.18V

In Aida64 FPU I get about 4650MHz all core.

Now, I might be overthinking it, or maybe comparing incomparable things, but I'm beyond frustrated trying to match my CPU temps according to what I see online. And frustrated because I've researched AIOs for 9800x3d and this is not even close to results from what I've seen online. I've confirmed the pump is working, it is making contact, and I've repasted it 3 times now.

I'm suspecting it could be either bad solder between IHS and CPU or the motherboard. My motherboard is an MSI X870E Tomahawk.

If someone please could get me some feedback, I'd appreciate it. This has been driving me nuts for 2 weeks now. Thanks.

EDIT 1: I changed the orientation of the AIO (so instead of hoses going to the back of the case they go towards the front) and using 80% pump speed, I'm getting 90C in OCCT Extreme with about 5020MHz and 140W. Still a bit far from what I've seen but a small improvement I guess.

Hello,

So I got myself a Silent Loop 3 420mm which I have been running for about 2 weeks cooling a 9800x3d. Since it's my first ever AIO I've been digging around some information about pump speeds and found out that you shouldn't have variable speeds on a pump because it causes unnecessary strain and cause them to wear quicker.

So next I searched for the pump speeds most people use and found out that usually it's 80% speed which I applied. Now I don't know if my hearing is above average or what but I can hear the pump kinda "humming" or "whispering" (a bit hard to explain) which, to be fair isn't loud at all, but I can hear through my headset (which has fabric cushions) on a quiet room at night and it kind of bothers me when I'm just browsing around, I think mainly because my fans are noctua 140mm fans on 40% and the GPU is on 0 rpm mode, so the pump is the loudest on my system. So I set it to 50%.

I have some questions though:

1. Is setting a curve (variable speed) on this pump bad? Does it cause premature failure?
2. Is 50% rpm low? Does it cause wear on the pump because it's maybe too low?
3. Am supposed to hear the pump that much? Or maybe it's just the other parts are so low volume wise that it's just what I hear?

Maybe I'm overthinking it, but I would appreciate if I got some feedback on this.

Hello r/overclocking.

I've been having a bit of a wierd experience while trying to use CO on the 9800x3d.

Some backstory: So up until now I had this CPU on a less than ideal airflow case with close to 10 year old fans cheap corsair fans with an older cooler that I used to have for my 12700f, needless to say I wanted to upgrade because I was hitting 95c pretty frequently. So I pulled the trigger and got myself a meshify 3 XL with 10x Noctuas NF-A14 and a be quiet! silent loop 3 420mm.

I was expecting unrealistic temperatures I'll admit, but I've been testing it for a week and I've been getting 78c on Aida64 CPU+FPU+Cache and 92c on OCCT Extreme. On games like battlefield I'd get 74c peaks on 1440p (which was the highest I tested). So next I looked into CO to see how much I'd gain.

So that brings me to the point: Disabled PBO, Enabled PBO and PBO + CO -15 all cores brought me exactly to the same temperatures which I found wierd. (I know per core is better but I was just seeing how much I could push)

Now, my understanding was that: not deep enough CO might only push sustain clocks and not necessarily lower temperatures. But -15 all core should be deep enough to lower temperatures no? Am I being unrealistic? Voltage wise I saw about 1.27v on VDDCR_VDD Voltage (SVI3 TFN) with PBO Enabled and with -15 CO I've seen about 1.217.

Motherboard is a X870E Tomahawk by the way.

Any thoughts?