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MSI Spatium M580 Liquid Frozr is an M.2 SSD with a Self Contained Liquid Cooling Loop

The solution is to make controllers that produce less heat, just as the newly shown ones by Phison seem to do.
Right but's not exactly a solution, you're just kicking the can down the road. As with normal CPU/GPU or any advanced piece of Si the energy density is only going up with node shrinks. Also the controller heats up because of the work they do i.e. you can throttle them harder to kinda run them cool, like smartphones, or that nanotube(?) cooling or whatever TSMC was working on!

A possible alternative is massive (SLC)caches like really massive but that would eat up capacity from the NAND chips.
 
Right but's not exactly a solution, you're just kicking the can down the road. As with normal CPU/GPU or any advanced piece of Si the energy density is only going up with node shrinks. Also the controller heats up because of the work they do i.e. you can throttle them harder to kinda run them cool, like smartphones, or that nanotube(?) cooling or whatever TSMC was working on!

A possible alternative is massive (SLC)caches like really massive but that would eat up capacity from the NAND chips.
Yeah, but this is something that comes with the incessant demands for increases in speed on NAND SSDs. Theoretically, the “perfect solution” is probably figuring out a different architecture for the drives altogether, perhaps something that would actually allow progress besides just linear R/W speeds. This also might lessen the need for going up another PCI-E generation, since aforementioned linear speeds are actually mostly irrelevant in mainstream applications. Optane was an attempt, but with well known failures and is dead now. I think something of that type must be pursued. Otherwise, what is next? Gen 6 SSDs? How impossible would the controller be to cool there? For how little gain?
 
I'm more impressed with the fact that it doesn't take up any more space than some of the other tall M2 coolers out there, making it technically viable for those who don't already liquid cool their NVMes or already use tower type NVMe coolers in the first place. And I thought the limit was at 40 or 60mm radiators made by Alphacool for 1U Server racks.

That said, with the constant chase of fastest performance in the NVMe space, and some absolutely crappy motherboard NVMe cooling solutions (and some computer cases), I can sadly see this actually becoming more relevant rather than less-relevant. The key factor will inevitably be the cooler's cost relative to the other NVMe tower coolers (or large blowers) already on the market.
 
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