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Help overclocking Q6600+EVGA 680i SLI

post #1 of 6
Thread Starter 
I have a few questions on overclocking my setup.

1. When/How/Should I raise FSB voltage at any time?

2. How large of increments should I increase CPU core voltage when the CPU speed becomes unstable?

3. Is raising the voltage recommended when tightening RAM timings?



Thanks!
post #2 of 6
1. You raise voltages when your current CPU OC becomes unstable when moving up with the FSB.
2. Raise your vcore in the smallest increments your board allows and then re-test stability.
3. Raising the voltage on your vdimm when tightening timings = yes. Raising vcore when tightening ram timings = no.

There are limits on how far you should overvolt each component so keep that in mind when upping the voltage on anything.
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post #3 of 6
Thread Starter 
Ok thanks.

What about the FSB voltage, should I ever raise that?

What is the max safe voltage for my ram? 2.3?
post #4 of 6
someone with more experience on the 680i would be able to tell you about the FSB voltage. There may be circumstances when you can/should raise it but I'm nto sure when that is.

To find out the max for your ram you first of all need to find out what IC your ram uses. I have a link in my sig that may help you, give it a look and see if the mushkin xp2-6400 on there matches your specs, if it does than that is likely the IC you have. The IC list says that ram ranges from 1.9v-2.1v, so if that is indeed the ram you have I'd be very hesitant to go to 2.3. By all means put some air on them if you are going to go over 2v-2.1v

Give it a look and let us know what model ram you have specifically, a link to the product page would be really nice.
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post #5 of 6
http://www.evga.com/forums/tm.asp?m=222688

This should get you started. Note this is for the 780i but much of it carries over from the 680i that you have. Hope this helps.
post #6 of 6
max FSB: 1.5V for higher OCs
max SPP: 1.5V for higher OCs (might get away with 1.4-1.45v)
max ram: 2.2V if raising MHz or tightening timings

make sure to vdroop mod the 680i
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