just wondered if any of you know what this PWM thing is, or what it meansthanksSteve.PS here's a shot of my First ever attempt at water cooling, and the radiator is Out Side below the window ledge, it's a Black Ice Extreme II, the biggest one I could find. and it's got two 120mm fans behind it as well, the pump is the Hydor L30, 1200ltrs pr hr, and 240V so I can have it on/off without the PC running, this can help in the cooling prior to and post PC running, and a good way to check for leaks etc without having power on the board/graphics card etc.oh, and I forgot, that temp you see for the CPU is from where I am in the UK where it's very very hot right now with the outside temperature at 29C, but the radiator has a cover over it to protect the fans from the rain, and to keep direct sunlight off the rad, and this was after running FS9 with AVC,S/Box,Servinfo.FS Nav etc and a PSS A340-300 on a 4.5hr flight.so I think it's doing it's job well don't you!http://forums.avsim.net/user_files/90299.jpghttp://forums.avsim.net/user_files/90322.jpgEDIT: Resized oversized picture.

Hopefully, this answers your question:http://fae.abit.com.tw/eng/faq/qa/2003/2003051304.htm