Originally posted by: chizow
Originally posted by: badnewcastle
Thanks for your replies... Chizow and Elconejito.
I'm totally confused by the GTL's I really don't understand them and have just been playing around with them. I will set the CPU GTL's at the same and see if that does anything. Hopefully it will. It's a quad so I know it's not going to be easy to get stable but I'm having more problems then I would have wished...
Things I've noticed:
1.) FSB 445 won't load OS unless my Vcore is 1.328 or better. ***seems high compared to others on similar setups.
2.) Lower NB Voltage is better.
3.) Leaving everything on Auto seemed to work about as good as anything.
4.) I can only get 3.6Ghz stable with everything on Auto except FSB.
5.) Appears to be most stable at v1.38 but that drives temps waaaayyyy up!!!!! 76c on all 4 cores during linpak. But 1.328 seems just about as stable as 1.38.
I really hope this just needs some tweaking as I don't want to go up on vCore anymore then 1.38 and even that I don't want to run unless I have.
Np, if you want to learn a bit more about GTL, VTT and FSB holes, one of the links in that Wicked post does a great job, but its very technical:
Tech Repository
Fig. 5 and 6 are probably the most helpful visualization of what happens when you increase FSB speed. You can see GTLREF margins decrease as you increase FSB speed. As you can see in Fig 6, the GTLREF doesn't increase as you increase VTT, resulting in the lower GTLREF tolerances observed in Fig. 5. To offset the increase VTT voltage, tweaking the GTL reference voltage increases the GTLREF to match the increases in VTT increasing the GTLREF tolerances as you increase FSB speeds.
Personally I think you're trying to work with too many moving variables at once. I would try working with a solid 9x400 and 3.6GHz and then go upwards on the FSB from there, making as few adjustments as possible. As you can see from the above link, increasing FSB speed will result in decreased tolerances elsewhere, which you'll then need to adjust for. Other than that, I'd say your temps look pretty reasonable for the clockspeeds and voltages you're running, although I'm pretty sure those 9650 E0s tend to hit 3.8-4 GHz typically.