I along with many others of you (I guess) are using an 8500DV AIW in my HTPC. Thought that I would Start a thread to share my experiances and get some advice from others at the same time. 1. Cooling ------------ That Fan is noisy as hell! At first I ordered one of the Zalmann Heatpipe Coolers - THESE DO NOT FIT! they need holes through the PCB around the processor which the AIW's do not have. Instead I sent it back and got one of the older radiator fin type Zalmann coolers - this fits and works a treat and i have (touch wood) not had any problems with heat at all. 2. SPDIF Output -------------------- The SPDIF is only supported for DVD Audio Output - you cannot pipe all you windows sound out digitally. Only certain DVD codecs/players support the SPDIF port on the card. The main one (obviously) being the ATI codec. ATI actually have 2 codecs - they have recently changed their software supplier. The original ATI DVD player (MMC 126.96.36.199 and older - and that which comes on CD with the 8500DV) includes a cinemaster codec - this works with the SPDIF out. Newer ATI cards (9000 series onwards) come with DVD Player AIW SPDIF Support Summary ATI MMC 7.7 Supported ATI MMC 8.1 Unknown (Should Support) WinDVD 3 Unsupported Sonic CinePlayer Unknown Nvida DVD Unknown TheatreTek Unknown PowerDVD Unknown Will edit and update later.