- Joined
- Jun 24, 2015
- Messages
- 7,457 (2.33/day)
- Location
- Western Canada
System Name | ab┃ob |
---|---|
Processor | 7800X3D┃5800X3D |
Motherboard | B650E PG-ITX┃B550-I Strix |
Cooling | PA120+T30┃AXP120x67 |
Memory | 64GB 6000CL30┃32GB 3600CL14 |
Video Card(s) | RTX 4070 Ti Eagle┃RTX A2000 |
Storage | 8TB of SSDs┃1TB SN550 |
Display(s) | 43" QN90B / 32" M32Q / 27" S2721DGF |
Case | Caselabs S3┃Lone Industries L5 |
Power Supply | Corsair HX1000┃HDPlex |
Personally I've used the Noctua NH-U9DX i4 with my server. They fit nicely in my 4U chassis, with some room to spare. My dual Xeon 2683 v4's never go above ~65C even at full load. Not sure if they have an AM4 mount for that one though.
This isn't some sort of novel discovery. They're Xeons that are capped at a sub-3GHz clockspeed under heavy load, already binned out of the factory for the best possible volt-freq within their CPU family, strictly adhering to 120W TDP, with physically massive dies and heatspreaders, governed only by a "dumb" Turbo table and Tjunction, and made on a much older process with zero thermal density issues. Power draw (and even then, 3900X and 3950X are allowed to draw ~142W package power) means next to nothing in relation to temperatures that a 3950X will reach, that's not how they work.
As to @burn query, this guy faced a similar issue finding air coolers for a 3900X in a 4U case and settled on the Fuma Rev B:
It looks like it'll have to be a <150mm cooler to fit in most 4U cases. The one 120mm tower that fits the bill is the Scythe Fuma Rev. B, but it'll have to be picked up from leftover stock or second hand as I doubt they make it anymore (and probably needs an AM4 mount too). Otherwise, as has been already explained, 4U would be limited to top-down coolers and 92mm towers; the former might be starved for air in a 150mm tall case, and the latter would be howling at full speed to keep thermals under control. Which might or might not be a problem, people don't always use rackmount cases in their envisioned role. OP never said where exactly he would put it, only that he has a 4U case.
https://www.reddit.com/r/buildapc/comments/cgrbm4