Epyc 3251 thermal paste replacement

altano

Active Member
Sep 3, 2011
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Cambridge, MA
Wow, I’m about to get the same motherboard, I never thought that this cpu didn’t had a heat-spreader. Help me out with something, is just me or the socket size is not that big as the SP4/TR4 of the EPYC 7K series?, if that is the case, I could use a Noctua CPU cooler like the Nh-l12s?, any chance you can share the distance between the bracket mount points? Just to check if I would need to mod the brackets of the cpu cooler?. Also that heatsink looks a lot like the one included with the Xeon D-2100, any chance that supermicro are using the same heatsink and that the cpu brackets are the same? Thanks!
This board does have a heat sink. It just doesn’t have active cooling, which you don’t need if you’re putting it into a 1U case.

if you do need active cooling get the 8C+ model of the motherboard instead of the 8C. It has a fan mounted on the cpu heat sink.
 

Rolando

Member
Aug 8, 2019
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I actually have a Xeon D running in a 1U case, but with Noctua fans that as you mention doesn’t provide enough airflow and I can’t use the stock fans because of the noise. So I’m thinking in move to a mini-itx case, that provides more height for a CPU fan but are still small enough to cover my main needs, which are: low-noise/low-energy/small-space. I’m actually looking into this AMD motherboard because the Xeon D-2100 from supermicro doesn’t have a x16 PCIe slot and I need that :/ .

Btw, just to double check , the heigh of the heatsink is 1U right?, so will not allow a fan when using a 1U case?

Thanks!
 
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altano

Active Member
Sep 3, 2011
159
46
28
Cambridge, MA
The 8C+ and 8C both fit in 1U yes. You can’t buy a supported aftermarket cooler for the 8C but you could possibly rig something up yourself, there’s some room for a fan obviously because Supermicro was able to add one to the 8C+.
I have this board in a 1U case with 2 FAN-0100L4 Supermicro fans and I don’t think it’s loud at all.
 

Rolando

Member
Aug 8, 2019
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are you sure that the 8C+ is 1U??.. that looks like the same heatsink the 8C has plus a fan, so I suspect that it will more than 1U
 

altano

Active Member
Sep 3, 2011
159
46
28
Cambridge, MA
But if you are sticking this board in a 1U case I would not get the active cooler. You don’t need it. Buy the board and get a couple of FAN-0100L4 Supermicro fans.
 

Rolando

Member
Aug 8, 2019
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Yes I’m sure

I just got a response from Supermicro (is amazing that they take the time to respond this kind of questions from individual customers, kudos for that to them!). And the total height of the M11SDV-8C+-LN4F is 69.2mm which is more than 1U.

Regards!
 

altano

Active Member
Sep 3, 2011
159
46
28
Cambridge, MA
Hmmm. That doesn’t seem right to me but who am I to contradict the people that make the board. The X10SDV-8C+ is 1U compatible. Did they just stick a MUCH larger fan on the M11SDV-8C+?
 

Rolando

Member
Aug 8, 2019
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Actually when I got the active cooling part for replace the original heatsink of my X11SDV-8C-TP8F, it was practically the same heatsink with a fan on top.
 

Petr

New Member
Apr 22, 2017
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Hi!
I would recommend Thermal Grizzly Hydronaut paste - Thermal Grizzly High Performance Cooling Solutions - Hydronaut. It has no silicone what makes it very good for long term exposure to high temperatures - I use it in many laptops, even those with 45W CPUs running at full load for extended time and have good experience with the stability over years of usage.
I am not affiliated in any way with the company, just telling my experience, BTW.
 

Rolando

Member
Aug 8, 2019
32
4
8
How does it work?
So, without the top panel, and replacing the stock fan for a Noctua NF-A6x25 CPU temp is about 60° C degrees and with load around 80° C (not using the FANs at full speed because of the noise). The numbers are not ideal, but still they are way better than before. That’s why I’m planning how to fit the Noctua NH-L12S into this to get better temps without affecting the noise level.
 

TXAG26

Active Member
Aug 2, 2016
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I'm giving the M11SDV series a look. Does anyone have the active heatsink part number from Supermicro or know if the screw holes on the motherboard match up with any other types of heatsinks (e.g. Xeon-D, newer Atoms)?
 

Sparton

New Member
Jul 16, 2020
2
0
1
hi there,

I am having the same problem currently: how do i replace the fitted heatsink from the asrock EPYC3251D4I-2T...

i know its embedded, but it should go into a mini tower case and there is now adapter whatsoever to attach a fan directly to the heatsink.

heatsink measured
- overall size 70x70 mm (there are only few mm left on three of four sides, so (future) heatsink has to be exact that size)
- therein are 4 screws at the edges of a 60x60 mm rectangle

officially socket is called SP4r2, but I cannot find any specs - and since its embedded, i dont think they are posted too often.

there must be some sort of altenative active cooling heatsink, water, air whatever to put on this board, but I am searching like crazy - nothing found.

cheers
m
 
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