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Hi Varry I had read all the reviews on the subzero before I got one.I have always had temp problems with my pc and the first step for me was to mod my case adding 3 x80 mm fans.Adding all the fans up=2x80 on my PSU 5x80 in the case 1x60 HSF (6800 rpm) the noise on the sum off these fans was unreal my girlfriend use to remind me to shut the door to the study all the time.I got a case with better airflow installed the Subzero and connected two of the exhaust fans along with the two suction fans to the control unit.It made a huge difference I can now leave the study door open and my temps are far more stable.Most of the reviews I read recommend two inlet and two outlet fans to have effective cooling if you did not have the need of these fans in the first place you have purchased a cooling unit you did not need.

Hi Bluedragon checkout www.activecool.com to find out about the unit from the people who designed it how it works and what it is capable of.I have a AMD 2400 XP and the unit performs brilliantly.

Sorry my mistake I'm in South Africa it's winter here.With amb. temps between 16-23 degrees C my CPU temps. are 25- 32 degrees,now this might not seem impressive but the temps. I am getting is a bit less than with my previous HSF with a massive drop in noise level.

Hi guys just purchased the SubZero been running for two weeks without any hassles it works like a dream I no longer get told to shut the study door because of the noise my PC use to make.I guess the real test will be in summer when temps. reach between 30-38 degrees C.

Hi guys I am a noobi at this,here is my five cents worth.U have to buy a unit and rate it in accordance to what it has been designed for.The Thermaltake writeup specifically says the unit is for lowering noise levels with the same temp.s you normaly run at. System specs. 2400 xp 1GB DDR 266 G4 4400 Gigabyte Kt 400 Thermaltake 420 w PSU 60 GB Seagate HDD X6 80mm fans Previous HSF Coolermaster CB5-6G52 Current Thermaltake Subzero I got exactly what I wanted from the cooling unit a quiet PC with the same cooling temp.s as advertised.Current CPU temp.s as it is winter in South Africa is between 25-32 degrees and trust me when I say my pc runs very quiet after the installation.