I set up my aquaero today and thought id use it to test out a little radiator ive had sitting there not doing anything much because i thought it was too small. The HW Labs M184 GTX, a dual 91mm radiator. With a frontal area of just 165cm² its a bit smaller than a 140 (196cm²) but bigger than a 120 (144cm²). Ive hooked up the aquaero as follows Sensor 1 - Air in Sensor 2 - Air Out Sensor 3 - Coolant Fan 1 and 2 are on the rad, with speeds controled by sensor 3 (coolant) min 25°C max 30°C The Loop The loop consists of EK Dual DDC>Dtec Fusion on a QX9650>S2E Fusion NB/SB > EK FC 295 > GTX184 > EK Multioption ewwww dont wory about the rough setup... this is just a test bed. Fan Specs The fans im using are *cough*thermaltake*cough* 91mm fans... I know I know... friends dont let friends bla bla bla, but the specs on these looked pretty good for what I wanted... and the shop only had these or "gentle typhoons" Fan Dimension - 90 x 90 x 25 mm Fan Speed - 1300 RPM @ 20C ~ 4000 RPM @ 55C Bearing Type - 1 Ball 1 Sleeve Noise Level - 17.0 dBA @ 1300 RPM 48.5 dBA @ 4800 RPM Max. Air Flow - 24.6 ~ 78.7 CFM Max. Air Pressure - 1.30 ~ 7.20 mm-H2O Power Connector - 3-pin Rated Voltage - 12V Started Voltage - 6V Rated Current - 0.15 ~ 0.48A Idle temps... well CPU crunching at 100% is idle for me since its going 24/7 Fans running at 5.9V, nice and quiet Coolant is at 27.5°C with Air in at 20.8°C (6.7°C delta) CPU was at 37°C GPU at 31/38°C (damn my uneven 295s) Ahh crap... I just realised the screencapture utility didnt get my everest osd Full Load As you can see the little bastard is barely breaking a sweat, Fans up to 77% (~10V), Air in 19.6°C, Coolant at 29.1°C (9.5°C Delta), GPU temps leveled off at 46°C.