I just bought a ThermalTake Duo Orb for 40$, it has two fans instead of one and it's based off the zalman vf900, i get idle 42 / load 75-85 , at idle this thing is whisper quiet , at load it's not loud but you can definitely hear a high pitch whine that's common with 80mm fan's , accelero makes a heatsync called the S1, if you have the space in your case for that massive cooler i'd go for that, it's passive cooling (meaning no fan) but you can mod it with a 120mm fan, although be aware that this humongous cooler can possibly block your SATA ports on your motherboard, or may not even fit. But if your using that p180 like it says in your sig the accelero should cool fine, just make sure you use all available fan slots in your p180 if you decide to keep an accelero passive. FYI stock coolers at 100% do a decent job of cooling, don't expect a miracle with the temps, I'd upgrade only if i was looking for a quieter solution.