GPU install disables AIO pump?

[Ynot45]

Hey team I have a VERY interesting problem -

I'm reassembling an old machine and it has a 120mm AIO liquid cooler. Without a gpu I'm idling at ~25 with an ambient of ~20 - not bad, I'll take it. However, I've slapped a 580 in there and all of a sudden my idle is at ~60 and under any load it's shoots straight up.

I've tried new paste, different headers for the pump and whatnot.

With the GPU installed I can't hear the pump fire up, without it installed, however, I can hear the gurgling of the pump on boot. 

Anybody got ANY ideas?? I'm stumped.

[Tristerin]

Run the pump off a molex to 3 or 4 pin header.  Eliminate that its not the increased heat of an RX 580 in the case causing issues - once you know the pump works once powered from PSU you can get more traction on the "why"

 

Full system specs please

[WereCatf]

11 minutes ago, Ynot45 said:

Anybody got ANY ideas??

PSU not being able to supply enough juice?

[Ynot45]

On 9/15/2020 at 11:53 PM, Tristerin said:

Run the pump off a molex to 3 or 4 pin header.  Eliminate that its not the increased heat of an RX 580 in the case causing issues - once you know the pump works once powered from PSU you can get more traction on the "why"

 

Full system specs please

Well, I appreciate the help anyway. Turns out, very very strangely, that it works with the pump (3 pin) plugged into the cpu_fan header, idling at like 25 how it should be, and with the fan on the rad just plugged into whatever chassis fan header.

Weird but we got there in the end, no idea why the GPU install caused it from going from a stable 30 to 50 even with the pump plugged into a chassis header, however I've solved the problem. Cheers.

[Tristerin]

5 minutes ago, Ynot45 said:

Well, I appreciate the help anyway. Turns out, very very strangely, that it works with the pump (3 pin) plugged into the cpu_fan header, idling at like 25 how it should be, and with the fan on the rad just plugged into whatever chassis fan header.

Weird but we got there in the end, no idea why the GPU install caused it from going from a stable 30 to 50 even with the pump plugged into a chassis header, however I've solved the problem. Cheers.

Pump needed more amperage, typically pump headers provide 2.5 I believe?  On new boards there are actual pump headers specifically for this