Better ib cooling

[john3850]

On my single loop with just a cpu,rad and single D5@12v would I get any better cooling or head pressure by using 2-D5 pumps on 24v compered to a single pump.

Swiftech MCR320-XP push pull with 6-110cfm fans 3 gutted fans used as spacers with bottom fans.
Apogee xt rev2 with old single bay res.

[OVerLoRDI]

Yes, you would get better pressure, but that would not necessarily reflect in significantly better temps. Flow rate vs temps follows a pretty harsh diminishing returns scale. Once there is "enough" flow rate, the additional flow rate does little, if any to improve temps.

A D5@12v is plenty for a cpu, block, and a rad.

[Meghan54]

Don't forget the extra heat load the second pump adds to the loop. While it may be only 24W, every little bit hurts, esp. with a single rad.

[BrightCandle]

Even at 3x Rads, 2 MB blocks, 1 CPU block, 2 GPU blocks and all that tubing to cover a massive case I am on the verge of needing a second DDC+ pump.

You will not benefit from a second pump, its quite likely to have a detriment due to the heat dump into the loop of the additional pump. If its for redundancy then I guess there is value but you do need to mitigate the heat.

[john3850]

Thanks everyone I will stick with one d5@12v.