Bought an Apple 5770 to install alongside my 5870, installed it and running on both Lion and W7 with no abnormal fan issue, completely quiet. All software was fully updated. Here's where it got weird. Then, I upgraded to an Intel 330 SSD to replace my X25, but no matter what I tried (PRAM, SMC resets, updated ATI drivers, etc) the 5770 fan would blow hard under both Lion and W7 with machine just idle, nothing open. This was a clean install of both OSs on the SSD. So, then I put the X25 back in, 5770 fan back to completely quiet. Just for kicks, clean erased the X25 and clean reinstalled both OSs (just like I did on the 330) and fans still staying completely quiet. Any ideas why? Just a fluke issue on the 330 install?