rieds Posted April 7, 2014 Posted April 7, 2014 im setting up water cooling for my msi gtx580 lightning xtreme only and had a question about fan and pump control. the pump is a swiftech mcp35x and the fans are noctua NF-F12's. i dont want the fans to run full speed all the time so i'm gonna plug them into a pwm header as well as the pump. my question is there any reason why i cant use the pwm header on the video card instead of the motherboard. i want the fans and the pump to raise rpm's with the gpu temps not the cpu temps. i have a akasa 3way pwm splitter with sata power plug so i won't be stressing the video card pwm header. thanks for any help in advance. Share this post Link to post Share on other sites More sharing options...
AkakmanH Posted April 7, 2014 Posted April 7, 2014 You might want to try the ARCTIC Accelero whic is quiet and energy efficient. No chance of water leak. Direct replacement for your current fan. Amazon link but you can find it other places. http://www.amazon.com/ARCTIC-Accelero-Efficient-VRM-Cooling-DCACO-V800001-GBA01/dp/B00HHMJIIO/ref=sr_1_3?ie=UTF8&qid=1396907314&sr=8-3&keywords=arctic+accelero Share this post Link to post Share on other sites More sharing options...
Puck Posted April 7, 2014 Posted April 7, 2014 im setting up water cooling for my msi gtx580 lightning xtreme only and had a question about fan and pump control. the pump is a swiftech mcp35x and the fans are noctua NF-F12's. i dont want the fans to run full speed all the time so i'm gonna plug them into a pwm header as well as the pump. my question is there any reason why i cant use the pwm header on the video card instead of the motherboard. i want the fans and the pump to raise rpm's with the gpu temps not the cpu temps. i have a akasa 3way pwm splitter with sata power plug so i won't be stressing the video card pwm header. thanks for any help in advance. The headers on GPUs are usually not a standard 3pin fan header like on a motherboard. To make it work, you may have to snip the connector off your stock fan unless you can source the correct one. Should work fine if you do that. Depending on the fans you have now and the stock fans you may be able to just make an adapter to run them both off the GPU header and just use the driver software to set a custom fan curve. Just check the power draw on the stock GPU fan - those F12's only pull .05A each and blower coolers like most AMD cards have crazy high amp draw...stock 7970 blower is a whopping 1.7A, that's a lot of power available from that PWM connector...enough to power over 30 of those F12s LOL. As a last resort you may be able to just hook it up to the motherboard and use software to control it based on GPU temp. I know Asus motherboard software can PWN control any fan fan header to any temp sensor on the board (the PCIE slot temps are shown, but not GPU), not sure if there is other software like afterburner that can reference other sensors like GPU. Share this post Link to post Share on other sites More sharing options...
rieds Posted April 7, 2014 Posted April 7, 2014 I never thought about the fact that the stock cooler uses 2 fans and the radiator pump gets its power from a molex connector so the pwm connecter from the pump is for monitoring only. All the plugs are 4 pin so everything matches up.using a custom user defined fan curve with afterburner is the main reason I wanted to use the video card fan header. Share this post Link to post Share on other sites More sharing options...
DanTheGamer11 Posted April 7, 2014 Posted April 7, 2014 (edited) I saw normal 3/4 pin fan connector to video card adapters one like this, then use a Y splitter for the 2 normal fans http://www.quietpc.com/gel-pwm-vga-cable Edited April 7, 2014 by DanTheGamer11 Share this post Link to post Share on other sites More sharing options...
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