Threadripper 9975wx! <-- now a build log

Hmm, access denied on that one… But interesting!

It’s in the “Manual & Document” section of both motherboards on the ASUS website.

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Exactly, that’s the way! I mounted fans with simple zip ties, but that 3D printed support looks really great.

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The issue with heat on DDR5 RDIMM is not because of the PMIC chip on the sticks. It only dissipates a few watts. The issues with temps is the sheer number of dual sided , high density dies on the sticks along with the very fast clock rates of these new 6400 and above DIMMS.

That and what you mention of packing 8 or 12 sticks , butt to cheek together on the motherboard and installing the same motherboard in a DIY case instead of the normal 2U-4U server chassis with high front to back airflow from multiple DELTA fans screaming along.

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I left all the fans on full blast, for 16 hours. This is the current situation.


Much better! That’s giving me confidence that it’s just a temperature issue. It does also seem that SMP causes more failures. I didn’t catch it in time this run to turn it on.

I am going to water cool my ram.

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My current build (7970X/128-6400) reached 70 until I added more fans (push-pull as described in the Fractal Torrent manual), but still reaches 65C.
For my new build I will put fans blowing over the cpu/ram because the case allows it, see New build: Have I just found the perfect Threadripper case? - Hardware Hub / Build a PC - Level1Techs Forums

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Strange that the V-Color kit with 64GB does not list the Asrock WRX90 Evo as a supported platfrom, only up to the 48GB dimms.

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I ended up buying M-die Hynix RAM with heat sinks for expediency but the advertised temperature difference doesn’t seem that impressive, see New build: Have I just found the perfect Threadripper case? - #8 by FredRipper

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This is likely because they are only heatspreaders rather than heatsinks installed; the latter has the surface area to reject enough heat and the former only equalizes the temperature to prevent hotspots and has alittle thermal mass to help with transients.

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Yes, that at least makes fans blowing on them much more effective.
They measured the hotspot on the hottest point (the RCD) which is right under… where they put a solid logo instead of venting holes, like the rest.
Pretty dumb design, in appearance.

The front says “TC” so just put that instead of “T-CREATE” on the top and your RAM might run cooler, lol.

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at least yours is going to be single rank and x8 organized; the x4 organized and dual rank is harder to cool.

Yes, when I see 24GB M-die speeds like those with the same tRAS, I dream: Patriot Viper Xtreme 5 DDR5-8200 Memory Review - Overclockers

Especially about that 8000 8x24 SR ASUS preset:

Bear in mind that currently the V-Color 8000 96GB*2 (the one Wendell reviewed) is selling for $2800, and I paid $1300 for my kit.

All that to try and soften the blow of seeing my UCLK drop from 3200 to 1600, if I can get at least FCLK=UCLK=2000 or 2050 or 2100 I’ll be happy (currently 2133.33/3200).
Like I said above, it doesn’t matter that much for compile tasks, but still >=5%.

Finally got some 40mm fans, will try some configurations soon.

Well, let’s see how jank this is. No real mounting points or anything. Could use a 3D printer for sure.

I tried to see if I could do a parallel setup, or I was going to pull though instead of push onto the ram, but I need a better mounting solution. There wasn’t much space either.

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Seems a lot better, at 40% fan speed.

Interested in doing a memtest now and seeing if it will complete.

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Nice! Fans on full blast, but about to add a couple more and see…

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Okay, less and more jank
future-rapper


Tring some tests with the ram fans at 40% which isn’t bad on the ears. Everything else is on “optimal” fan curve default settings.

I also did a funny and bought another Fractal North XL Mesh to get another side fan bracket. I looked everywhere for a loose one and on their site for accessories, guess that one will have to be my next build.

No room for a push-pull setup on the rad, but if the ram has no errors at 6800 and I can run PBO for 5.2-5.4 GHz while maxing out my 3 GPUs and storage card, pretty damn good for me. Counting the PCI cards, there are now 25 fans in this beast.

I wonder if pulling up through the RDIMMS might be better, or if I could configure some side panel fans as exhaust, but IDK atm.

Seeing if memtest86+ with SMP enabled passes with these fans on mostly quiet mode for now.

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So far so good!


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