Hi Aqua Computer,

Now that I have my waterblock mounted, what comes next? Do I run a wire between my pump and my card? I notice I have a 4 pin port where the old heatsink fan used to go. Is this used? I'd guess it is, but wiring isn't my strong suit. Are there any diagrams on how to wire things together? I know the pump will need molex power, and I can take care of that easily enough, but does the card need to be able to tell the pump how much pumping to do?

Thanks for any suggestions. I've never used watercooling before today.

I used videos to help with mounting the block. Here's hoping the new foam is functionally the same as the old foam. If not, I can always swap them over. Currently, I'm waiting on a power supply tester to help with filling the loop for the first time. Everything is still dry, and I'll only have 2 possible leak points to worry about after everything is installed. My main question at the moment is what do I with the 4 pin on the 480? There's one on the top for power and another one for power I've unplugged to finish disconnecting the stock fan. This is the one I'm wondering about. My instinct says the 4 pin jack that used to control and power the fan on the GTX480 is now required to tell the pump how much water it needs to move to keep the card cool

The pump I'll be using is an aquastream XT USB 12V Pump. http://shop.aquacomputer.de/product_info…roducts_id=1299

I might have to run a molex extension to power it, but to do that, I'll need to know volts/amps and watts of the pump.

Also, I noticed a rather dire warning about USB polarity. I'm sure there's a picture out there somewhere. The USB connectors' wires go red white green black black. 5 in total. Technically the last one is grey since it's the round wire, but it's sheathed in black. I have a free USB header on my board, so I'm guessing one end goes to the board while the other end goes to the pump. Mainboard is a GA-P35C-DS3R. The header side should be pretty impossible to mix up since there are 4 pins on one side, 5 pins on the other. The tricky bit will be trying to get them both to face the right way. On the pump side, I can rely on the guide arrows to avoid this problem. On the motherboard side, the case header I added for front port USB is a reliable guide. It indicates the red goes up the top. My board has 3 free USB headers on it so I have lots of room that way. Frying my pump first time out due to incorrect polarity is something I'd like to avoid.

@Tomcat, yeah, that's what I'm hoping for too. The red wire on the board is at the top and the pump has an indicator marker. I'm currently awaiting delivery of a cheap PSU tester to help fill my loop by providing a single molex out with which to power the pump. It'll be ideal for test purposes. In the meantime, I should be able to cut and measure pipe. Don't worry folks, I've got a pipe/hose cutting tool. No excuse for not having one really.