Hi, I recently installed a Arctic Cooling Freezer 7 PRO Rev.2 to replace the stock heatsink for my AMD Athlon II X4 640. I restarted, and, after waiting a bit longer for Win 7 to sort out recognising the new fan, it eventually worked. So far, so good. I checked the settings in the BIOS and they are the same as for the previous stock AMD cooler.
Anyway, after getting to the desktop and opening a few programs, I then ran CPUID HW Monitor.
The Arctic Cooling Freezer 7 PRO Rev.2 is running much slower (1000rpm vs 2000rpm for previous AMD stock fan) although there's no noticeable noise difference.
But, the case fan at the back of the machine is now running faster (1000-1100rpm vs 900-950 with AMD stock fan).
I'm thinking this is because the new cooler is larger thus taking up more space and restricting airflow. I also had to move the HDD because of this. The direction of this fan is also either up/down and not in the direction of the airflow through the case, which could also be another factor.
Oddly, in spite of the reductions in speed, the computer sounds just as noisy as before (even a bit noisier??????)
Could it be simply be the cooler is not that good??
My dilemma now of course is whether to just return the new cooler and keep my old one??
CoolerMaster Elite 340 Micro-ATX Tower Case
AMD Athlon II X4 Quad Core 640 3.0GHz (Socket AM3) Processor
CPU Cooler: Stock AMD
Motherboard: Asus M4A88TD-M EVO/USB3 AMD 880
Memory: Corsair XMS3 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz Dual Channel
Hard Drive(s):Samsung HD103SJ SpinPoint F3 1TB SATA-II 3.5" Hard Drive
Graphics: VTX ATI Radeon HD 5770 1024MB GDDR5 PCI-Express Graphics Card
OS: Windows 7 64bit