Want to improve temps on my Core i9 13900K by around 10C staying with air cooling

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*Using Core i9 13900K with e-cores disabled and all P cores clock at 5.6GHz with VCORE static set to 1.35 at LLC 6 on an MSI Z690 MEG Unify X motherboard.

*Using a Noctua NH-D15S CPU cooler with 2 140mm fans running at 1000 RPM each and Thermal Grizzly Kryonaut paste and also the Thermalright LGA 1700 BCF frame

*Using Be Quiet Silent Base 802 case with 3 140mm Silent Wings 3 intake fans all at 1000 RPM and 1 rear exhaust Silent Wings 3 140mm 1000 RPM fan (Using mesh front panel with dust filter removed for better air flow though have top with seal panel on as no fans up there and want to dampen weird noise such as mild coil whine and such)

Now when running Cinebench R23 full load, temps hit 90C and average 90C and only go as low as 89C and peak as high as 93C and sometimes 94C which is very disappointing as Cinebench R23 is supposed to be more realistic all core workload. This is in an ambient room of 19C which is around 67F.

My case is as clean as can be with only RTX 4090 Gaming OC and CPU cooler and CPU. No HDDs nor SSDs in main area and only 2 M.2 SSDs of course in the mobo and only 2 SATA SSDs on back of case so not in way at all of air flow.

I would like to lower them around 10C staying on air cooling with 1000 RPM fans during Cinebench type run at my settings

Would it be possible to change air coolers or thermal paste and lower the temps. Would the Be Quiet Dark Rock Pro 4 be a better fit for my config. I know research suggests almost no temp difference between Dark Rock Pro 4 and NH-D15S. However does the Dark Rock Pro 4 or maybe Assassin 3 have a better cold plate for better contact with LGA 1700 socket using the Thermalright LGA 1700 BFC frame?? Or no difference??

Or is there just no way to cool these things any better on air and they run hot no way around it at mid 5.X GHz speeds even with e-cores off. I would have thought with the superior binning and refinements from Raptor Lake that running those extra speeds would take same power as Alder Lake and same tempos. But no it seems to just run hot hot hot.

I can only imagine when summer comes and my AC keeps my room at 21C at best and even tougher to cool.

The P Out value goes to like 190 watts during Cinebench R23 run and CPU package power goes to like 195 to 210 watts. I would have thought with the larger heat spreader on LGA 1700 and cooling capacity of 250 watts for NH-D15S and Dark Rock Pro 4 temps would be low 80s
 
Can I ask your reason for 1000 rpm fans? Are you spending a lot of time running a high work load where noise will be a problem?

Higher RPM would shift a lot more air and cool much more.

I don't think you'd gain from changing air cooler, the D15 is a beast and tops most tests.
 
It'll be very hard to lower the temps of your chip any further given the 5.6ghz clock and volts too 1.35v, as above running your fans locked at 1000rpm will not help with cooling, there are a couple of things you could try, first one being try undervolting your chip, drop back the voltage 25-50mv and test at each stage to see if your pc is stable (keep reducing volts until the pc crashes, at that point you know the lowest stable voltage your cpu will work at 5.6ghz) and also check temps, with any luck you should see it drop a bit, but if you run into problems with instability you may have to drop the core clock back.

Other than the above you will need to increase the fans a bit, let them run at max rpm and see what temps are like, if they drop dramatically then you can start to reduce the rpm until you find a happy meduim between temp and noise, but dont be suprised if the fans ramp up and down, that will be in response to the core load, the 13900k is a beast but chucks out some seroius heat.

In summer months you may very well have to run everything at stock speed as the added heat will be too much for a overclocked system, back when the uk hit 40 degrees i had to remove all overclocks from my system (5950x) and i had aircon on in my room, it was bloody hot
 
I can run my 13900k @5.6 at llc 4. Dc ll to 1.02 and ac ll to 0.2. Adaptive voltage -0.050 quite easily. I haven't tinked any further yet as i haven't had time. Try that to see how it performs on air cooling. im interested to see the difference over your stock volts
 
I am going to buy another 13900K and see if I get a better bin.

The Force 2 score was like 147 with 150 being average on my MSI Z690 Unify X.

On 2 Asus boards, the SP score was 98 (I had returned the Asus boards due to DDR5 XMP random stability issues which the Unify X solved). I see lots of 13900K people with SP scores above 100 so it seems mine is mediocre.
 
My understanding is Raptor Lake runs hot - especially the 13900k. Plenty of reviews show them running at circa 100c with full load.

What do you mainly use the machine for, gaming? If so, the gaming temps should be lower.

I wouldn’t worry too much personally…

 
They will if you leave the bios defaults running. There is a few settings you just need to adjust. Mine at stock on a 360 aio maxes out around 82 on a 10 min cb23 run. All p core at 5.6 I hit 93. Ain't tried any further yet.
 
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