Arctic Cooling Freezer 64 Pro

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Arctic Cooling Freezer 64 Pro
This is a good cooler, perhaps not great, but very good price to performance ratio.  I gave 19.99 plus shipping at newegg. Kind of big, but not as large as some of the other high performance coolers I've looked at.
I like the fact that the mounting mechanism can be reversed. I did reverse it on mine as it made it so much easier to install. Comes with thermal paste applied, but I removed it and went with AS5.

On my system, 6000+ and Asus M2N-SLI Deluxe, I have 4 modes of operation.

PWM off and RPMs of 2815 and the fan is rather loud, however temps are best with idle of 32C and loads going up to 40-42C.

PWM ON;
Silent Mode, RPMs 1019 Idle temp 41C Load 55C
Optimal Mode, RPMs 1500 Idle temp 38-40C Load 45-48C.
Performance Mode, RPMs 1708 Idle temps 34-36C. Load 40-45C.

I'm using performance mode as I find this to be the best mix of  low noise and cooling for my system. At this setting I have to really listen closely to hear the fan and I'm getting fairly good cooling results.

I also considered and am still considering the NH-U12P Site but thought I'd give one of their NF-P12 fans a try first. I've ordered one and will give a comment once it arrives and I've had a chance to give it the once over.

[Buffalo2102]

I use the Arctic Cooling Freezer 7 Pro, which is basically the same cooler but for LGA775 socket CPUs.  I think it is great and I got better performance from it than from supposedly top-end cooler, the Scythe Ninja.  The performance difference was minimal but the price difference was huge.  I kept the Freezer 7 Pro and auctioned the Ninja for more than I paid for it.#

Buff; got some good overclocks with it too.

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I received my Noctua NF-P12 120mm fan and this is, without doubt, the nicest fan I've ever had. This thing moves a lot of air and is virtually silent, even without the low noise or ultra low noise adapter. Of course I don't have any fancy tools to measure the volume of air moved or actual sound levels, but when I put my hand in front of the vent and my ear down by the case it seems like the real deal.

I'm so impressed by this fan I went ahead and ordered up one of their coolers and will comment on that in the near future.