The Zalman video card coolers a make a lot less noise that the factory heatsink & fan combo and I would recommend getting one. I personally got a XFX GeForce 7950GT Video Card that had no fan just a big heatpipe/heatsink for my HTPC. As for the CPU I would recommend getting the ZALMAN 9700 LED and for any other 80mm fans I would recommend ENERMAX UC-8EB or EVERCOOL EC-EGF-8.
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Chad