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The DC-LT 2 says it's rated for 75l/h, so about 0.3 GPM. I would indeed rather have a DDC pump, and if I were starting from scratch I'd get the Aquanaut- but I already have the AMD Ryzen edition CPU block from EK. Given that, the S1 pump would be a great candidate if I had a 2amp header on my motherboard, which I don't. So that leaves a DDC310, but that would require modification to use just header power (since I don't want extraneous molex or SATA power cables). The DDC 3.1 would have been perfect, but it's discontinued.


It's possible I'm giving up some cooling performance, but I don't really love my alternatives :-/ and it appears to be sufficient (not like the pump is failing to move water or anything). It'd be great if someone had a simple DDC pump that ran on a 1amp motherboard fan header, but unfortunately that doesn't appear to exist currently. Maybe I'll upgrade the pump eventually, but for now it's doing ok.