Hello, I just upgraded my CPU to a QX6850 quad and I'm getting large variations between cores(especially under load), and also hot core temps in general. I'm not overclocking, and don't intend to. I installed the stock Intel heatsink and fan(paste pre-applied to heatsink by Intel). I checked the heatsink and it doesn't so much as wiggle at all. Seems very securely attached. Are these temps something to worry about? Does it look like I need to reseat the heatsink? Thanks for any help.