I have had my beast for a while now and all I can say is WOW!!! Anyway, since I have had it, I had to replace the rear exhaust fan. I looked at SMC fan control and low and behold my exhaust fan showed zero rpm's. It was an easy fix though. Another trip to ebay and I got the entire memory cage with fan for 25 bucks. At first, the seller sent me the front dual fan assembly by mistake. When they made it right they let me keep the wrong part for free. Since its perfectly reasonable to expect a 5 year old computer I bought used to need a fan replacement, I'm ok. I even got a free front fan assembly out of the deal.
The Fedex truck will deliver my BRAND NEW STILL IN THE PLASTIC HD5770 tomorrow. Get this, since the box didn't say apple on the side it only cost me 127.00 with no tax and free shipping. I can live with out a blank gray screen during boot up if it saves me 125.00 off what apple charges. Now all I have to do is save up some more cash then grab a memory upgrade, a 27 Inch screen, and an SSD boot drive and this puppy is ready for the big leagues. ( big league to me any way) Today the world is a good place.