Just a follow up for any one using a LSI card in the R610.  Yes they can run hot but they are also quite old.   I decided to take its heat sink off and found the paste was dried up.  I put some artic silver 5 on it and it dropped the temps down to 59c idle 64c load and that is with me putting the R610 fans lower (there is a way to trick it to run fans as if there was not extra card in rear slot).  Good enough no issues.  Before idle 72c load 87c With high case fans (loud) After 59c idle 63c load (Lower r610 fans) It was even cooler with the R610 fans (3c) louder but not enough to make me stick with it. Here is how to trick the fans REM The below command from dos prompt will reset the idrac 6 and the fans often will come back up slower than on intial boot up = less noise! from 7200rpm on 1/2 the fans to 4800 and 3720 rpm. The LSI raid card might run hotter it runs 63c on slow fan and maybe 60c on higher. (put in a bat file) run from desktop icon.  Had issues running it on start up. might work with a delayed startup. ======================racadm racreset soft ====================  
I have a LSI raid card in the rear of my R610 and the card runs a bit warm during backups.   Like 85-87c.   Normally its around 72c.    It has a heatsink on it but no fan.   Was wondering if anyone has tried a PCI SLot fan to cool the back of the case a little more. Thanks!    
R610 pci slot fan in the rear is it possible?