I just purchased a Dell Precision T7500 from ebay. It has 2x Xeon 5680 hex CORE cpu's, 96 gb of ram, a 128gb SSD start up disk on MB sata, a 2tb HDD and 3-300gb 15k sas drives on a Dell PERC 6/i adapter, it also has an LSI external raid card. I have no need for the raid, so I decided to pull the external raid card which wasn't in use, to install a pci-e to usb-3 adapter in it's place. I got as far as pulling the raid card out. I restarted the COMPUTER and when it was loading windows, the fans started ramping up SLOWLY and stayed on full throttle. It hadn't done that before. I checked the temp of the cpu's on Speccy, and they were running between 35-47 degrees C. on idle. That seems within spec, but before that they stay at about 25-29 degrees. My intentions with this build is to remove all the raid adapters and replace the PERC with a PCI-e to Sata 3 adapter, and also install the USB 3 adapter as previously mentioned. Anyone know why the fans are running full throttle (BTW it sounds like either the PSU fan or the HDD fan) and how to fix it?Crisis averted: this problem fixed. Took out the riser card and removed the heat sinks on both cpu's and reapplied thermal paste. Beastie is back to running cool and quiet.