Retail E5200 @ 4.317GHz on air result!

[MajkY]

I have tryed as you say. I can boot now at 1.435Vcore 3800Mhz, but its unstable in Orthos . What V should i increasd ? Ram is on 800Mhz

[xdan]

I have tryed as you say. I can boot now at 1.435Vcore 3800Mhz, but its unstable in Orthos . What V should i increasd ? Ram is on 800Mhz

After how much time errors appear?
E5200 is a 45Nm, you can't boot (even post)with 1.4?
If you run more than 10min is good you don't must change many things.
What bios do you have, try a bios from Ket.
I saw that for some Cpu, that with a mbios worked with a lower voltage at same frequency. (some quads on Deluxe).
And thry with rams on other frequency(divizor)
A strange thing on my P5Q-Pro is that with frequency described on last post, is stable with ram at 1040, but it's not stable with ram on lower at 1003 !
Try another ram frequency , try VTT 1.24, 1.26, 1.28(with these voltages i can run stable at fsb 398 but my rams do errors at 1060+, and Cpu won't boot more than 400fsb so i've prefered to stay on VTT auto and 390FSB)
It's don't worth for an E2140. I will buy soon a E8500 E0.
Another thing is to respect voltage default for Ram . Example: for 800Mhz i put from bios 2.1 for my A-DATA , may be you have, if not put the voltage specified to rams for 800MHZ, don't let on Auto
GOOD LUCK

[MajkY]

i think i found out why i am unable to go higher...

i dll new prime95 and than saw it...one of my core is holding me back
is there any option on how to disable one core ?

[xdan]

You can't "disable a core". I still think that 1.43V is too much for Cpu, mine E2140 becomes unstable at 3120MHZ if i co upper than 1.39.
Another thing Load Line Calibration(LLC) is enable at you?
If not you shoud enable it brings Vdroope muc lower and stability !
At 1.368 voltage with you reach 3.6GHZ, you can't go futher with that settings ? Try to tweak some voltage settings(NB(1.34, 1.36),ETC)
Also a thing from mine , I have freeze moments if i use vtt voltage when Nb is more than 1.32. Another setting stable at me( VTT 1.28, NB 1.24) rest are same as in upper post
No what i can say, more than 4GHZ don't make hopes