Yes I've already tried this, no good :(
C-BuZz
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Got my gigabyte GA-MA790FXT-UD5P today, one of my cores is dodgy to
stepping is 0919EPMW.
How can you disable a core? is it possible
Bummer. I don't think you can disable cores as far as I know. You can set affinity to select which core's run the program, but as far as disabling a core altogether I don't think it's possible. Your stepping is even earlier than mine. Mabye the later steppings are the one's :confused:
C-BuZz
mybe phenom II 550 have bug in quadcore, because is very high risk to unlock 2core to 4core
cant get mine stable, tried lowering multi on core 0
http://premium1.uploadit.org/bobbybo...re-poo-poo.jpg
Hey,, try setting yur Nbvid to 1.25 - 1.3vid... After 3800mhz you will need to run at least that to clock all four cores.
Also it would be good idea to see how High it clocks with Two cores and high NB with 1.3vid on the NB.
1st,,
Clock it as high as you can X2cores then lower the CPU and Nb while keeping the Same volts used with the Max Oc you found in 2xcore mode.
2nd,,
Enable Hybrid option with say 3400mhz to 3600mhz/Nb@2000mhz ( mine does this with Stock volts)on all four cores,
slowly raise the CPU with NB @ stock ,@3800 with Vcore @ 1.44/1.48 and NBvid @ 1.3v it should be more stable than if NBvid was @ 1.1v.
Gonna see what two cores will do soon,, I usually would Clock Two cores first(How i did the 720) ,but was excited as Hybrid enabled all four from the get go.
Mine clocks best with Low HTT and using 20x CPUmulti to get up to 4200mhz Max in TwoCores ..After a lot of Hangs in 2xmode i just went back to Fourcores @4160/2700 with 4xcores in hybrid now.:shrug:
It seems harder for me to get Two cores as stable vs 4cores.
I Know its Bios related and Not the Chip ,r my Chip would not Be able to Bench at 4160mhz.
This is with the Dual Bios Function (Normal vs Hybrid)and the Normal Mode seems harder to tweak. I think the UD4P F5a Bios is better optimized for Hybrid Mode.
NB@2800 550@ 3.8
http://img14.imageshack.us/img14/1253/550nb2800.png
and ppl say it's not worth it to try and unlock cores!
c-buzz i still think it's cache related or mobo. u have to try another mobo, it's the only thing u haven't touched! just imo.