help with pump selection.

I am getting back into liquid cooling. I have seen alot has changed since 2008. I need some help with my pump.

My build consist of the following
Cpu 4790k
Board maximus z87
Gtx 980
1 360mm rad
2 240 rads
1 120 rad
Bitspower summit block
Primochill 3/8 id tubing
Eks 980 vga block
The asus stock mosfet block.

With a xspc d5 photon set up.

So will that pump be enough or will i have to get another.

Should be enough.

It should be sufficient. I have a 2nd pump for redundency but it doesn't actually move the water along faster. I've only seen one computer with an Iwaki pump but I believe he was running the loop through two computers. I have 2 rx480 radiators and 3 gpu blocks with a cpu block. A single was fine for it.

Thanks for you help guys.

XViper said:

It should be sufficient. I have a 2nd pump for redundency but it doesn't actually move the water along faster. I've only seen one computer with an Iwaki pump but I believe he was running the loop through two computers. I have 2 rx480 radiators and 3 gpu blocks with a cpu block. A single was fine for it.

Click to expand...

A second pump increases maximum head pressure, which gets flow rates closer to their theoretical max in high restriction loops. Depending on whether your GPU blocks are in parallel or serial, you have a low or high restriction loop.

XViper said:

It should be sufficient. I have a 2nd pump for redundency but it doesn't actually move the water along faster. I've only seen one computer with an Iwaki pump but I believe he was running the loop through two computers. I have 2 rx480 radiators and 3 gpu blocks with a cpu block. A single was fine for it.

Click to expand...

I'm using an iwaki pump to circulate the cold side of my loop that doesn't go through my desktop, and I would never put that thing on an actual watercooling loop. Blocks and fittings and seals are not designed for the kinds of pressures it puts out. It's also quite loud compared to a 12V pump.

@OP I recommend getting a PMP450S (or any 24V compatible D5 pump). If you need more power you can hack a laptop AC charger (19V) to power it and get higher pressures. Just yesterday I was usiing 19V to blast air bubbles out of the loop before dropping back to the usual 12V (quieter).

Isn't that far to many rads?

Yeah, looks like a lot of rads indeed. If I wanted to reduce loop complexity and improve flow, I'd remove that 120 rads as not really worth it, but entirely up to the OP.

But a D5 can handle that. And better to have lots of rads than too little as you can then run the fans at ultra low speeds to keep noise down.