Hello, I'll compatibility details with my old System. They resolved, it's a pleasure to finally turn my 2 virtual machines, start encoding and playing while downloading (moderately). Formerly I was shooting with 4x2 GB, with 1 GB free about (all with 32 MB of swap). Now 2 * 8GB, I have about 5GB free in the worst case (always a swap 32 MB). In terms of speed, I can not say whether it's better or not, it's more comfortable anyway. Allowing me to use more application simultaneously; example: Media Encoding Server on the fly + + Virtual Server Virtual Machine + 3D Games. No crashes yet recognized my PC is restarted rarely. I have not yet re overclocked my System and thus have not finished my barbaric tests, but in terms of reliability RAS. Especially at this price, really not be shy.