I ran a cad design office with two ws x 7 prs, have it all stillb but i bet moore's law did slow down but not to a standstill,.. Awell, benchmarking will get me where i need to go
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Threadripper chips are massive with massive power usage and heat spread across the huge die. They need special coolers and you need a really good one to truly take advantage of them. They bypassed chip density limits with die size. It's a massive server CPU but with high clocks.
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Oil or liquid submersion cooling with funny sounding chemicals would be great for that
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The problem with buying a CPU like amd.com/en/products/cp or amd.com/en/products/cp (the 2 highest end Zen 2 Threadripper chips) is that I wouldn't even trust an AIO cooler to avoid killing them. It has to be reliable air cooling. AIOs are actually worse than air anyways...
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icegiantcooling.com is the only way to make 64 core Threadripper work properly without risking that massive investment in a $4000 or $5500 USD CPU if your water cooling loop leaks, etc.
The main issue is that it's such a ridiculous amount of heat from a single huge CPU die.
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NH-D15 works as well as icegiantcooling.com for a more typical CPU. It's as good or perhaps even a bit better at taking away heat from a smaller, denser CPU.
They only have noctua.at/en/nh-u14s-tr4 for Threadripper though and even an NH-D15 version wouldn't be enough for 64c.
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I'm guessing that AMD won't bother with higher core counts for Zen 3 even if only because there was so little interest there was in making proper coolers for the current Threadripper generation. There wasn't a single useful AIO made for it. All worse than Noctua's offering...
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I bet you're right it's a commercial issue, surely its really not a problem to solve the engineering of it, funds permitting sais the aerospace engineer :-)
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The chips make sense for AMD since despite being very low volume, they're surely extremely high margin products. It's hard to get a proper motherboard and cooler ecosystem to develop around them since the volume isn't high enough. Motherboards were largely fine though.
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The main issue with the motherboards is they needed to make newer revisions to handle the power demands of the 32/64 core chips, especially when overclocked. I had trouble finding anywhere to get any decent new revision boards, etc. It was painful. Then chip shortage...
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That's another thing all together. Anyway, these guys build the immersion cooling for microsoft datacenter, might shoot them a mail, who knows: