yeah i have easytune too. i wouldn't suggest OCing with it though. i only use it for temp monitoring and even then i don't know if it's exactly on. i just use it to ballpark temps.
I'm assuming that you have a DS3 mobo since it's a gigabyte/C2D setup.
1. first go to gigabyte's webiste and update your BIOS with the program @BIOS (it's on your CD that came w/ the mobo)
2. read up on OCing on the sticky tread here and in your manual because it's really not that great to just go on what other people explain to you because they might assume you know stuff you don't.
3. boot up your computer.
4. just tap the [delete] key until you get into a blue scree (BIOS)
5. once in BIOS you'll be able to OC there. you can also get more options by pressing Ctrl + F1. (it mostly gives you options for tweaking ram and stuff but it's still really useful.
6. from there just up the FSB and set the memory divider to 2:1 (which is actually 1:1 for DS3's for some reason) and up the vcore when you get unstable.
i can't say for sure what a safe temp is for your cpu but i never let mine get up past 50-55. Intel says not to go over 60 but a guy on here "accidently" had his running around 80 for a while before noticing and it still works fine now.
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