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An odd PWM question (Can you use a mini-PWM adapter?):

post #1 of 3
Thread Starter 
Is there any reason why I couldn't connect my pump with pwm control to my GPU (with a mini-PWM adapter)?

I want to water cool a 290x and arguably that is going to be the hottest component I will be cooling. So wouldn't it be easier to have the pump outputs controlled by the GPU instead of the CPU/mobo?

Thanks in advanced!
 
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post #2 of 3
I don't see why you couldn't connect the PWM wire only from the GPU to the pump if you wanted to.

Obviously you can't connect the power lines too, your pump will probably pull more power than the fan header on your card can handle. Also note that depending on your GPU water block, you may not have access to the GPU fan header.
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post #3 of 3
Thread Starter 
Thank you!
Quote:
Originally Posted by GingerJohn View Post

I don't see why you couldn't connect the PWM wire only from the GPU to the pump if you wanted to.

Specifically, I'm using a MCP35x, so it uses the pwm header for reporting speed and draws power from molex. So, in that regard I think I am good.
Quote:
Originally Posted by GingerJohn View Post

Also note that depending on your GPU water block, you may not have access to the GPU fan header.

Yeah, I am looking for pictures of installed waterblocks on reference 290x PCB's to see which ones give good clearance around the fan header.
 
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