My real world testing
Setup
CPU - Intel Core i7 920 - 3.55GHz
HSF - Phanteks PH-TC14PE w/3x Thermalright TY-140 PWM fans exhaust ducted out top
RAM - 6GB (3x2GB) GeiL Value Plus DDR3 1600MHz 9-9-9-28
Motherboard - Gigabyte GA-EX58-UD3R Rev 1.6
Graphics card - ATI Radeon HD 6570 GDDR5 512MB reference model w/ Scythe Setsugen cooler
Power Supply - Corsair TX650 v2
Hard Drive – Samsung 750GB, 1.5TB, 2.0TB
Case - Fractal Design Define R2 w/2x Akasa AK-FN053 front intake, 1x *PH-F140TS quiet adaptor* bottom intake, 1x AK-FN053 back exhaust, all PWM controlled based on cooler fan rpm
*normally TY-140 but used for 3rd fan on cooler
Case is under desk
ET6 = 15% rpm @ 30c
100% rpm @ 43C
front closed
idle 720rpm @ 37,36,40,35c-20.5c ambient encoding 1320rpm @ 58,58,59,56c mobo 31,42,45c
idle 711rpm @ 35,34,39,34c 21c ambient encoding 1300rpm @ 58,58,60,57c mobo 32,42,46c
Encoding with HandBrake 0.9.6; realtime; 10 minute encoding pass.
Maximum temperature in less then 2 minutes.
Case exhaust temperture above ambient; +2.5 idle, +5 encoding