Ben the OCer

I have the same board. The BIOS you'll need is 78DEA113 which was released January 13, 2009. Check what version you have now. You can do this by going into CPU-Z, under the motherboard tab, make sure under BIOS that the date is 1/13/2009. If it's not you can download it here. You can flash it with Biostar's Windows utility (link) or put it on a flash drive and do it in the BIOS. Best of luck with the unlock.

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Stable Validations:
CPU-Z: E8400 @ 4.2GHz 1.4v, PII 550 Unlocked @ 3.75GHz 1.475v, PII 710 @ 3.6GHz 1.475v, E2140 @ 3.2GHz 1.3v
GPU-Z: HD4850 @ 685/1010, HD3850 @ 810/909

(Forrest Gump referring to Apple Computers) "He got me invested in some kinda fruit company."

ukcyberboy

Thanks Ben
After trying different versions that worked. got a 4 core in bios so now just got to get windows and do stress test as I only have stock cooling.
Would you up the Voltages if so to what.
Thanks

nirianto

Mine is running at 3.6ghz with 1.52v. I'm using Xigmatek S1283 as cooler and my load temp is around 45C.

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!!~AMD Phenom II X3 700 Series OC Club~!!

Gill..

Talk about this for a lunch break.

Built my system last night until 3 am, work at 9 am.

Lunch at noon - by 1 pm I had updated BIOS to 1.6 on GD70 - unlocked the other 2 cores, overclocked it to 3.6 and RAM is running at 1600.

BLAM

Just bought it on Newegg this weekend, so clearly they're not a bad batch....no issue whatsoever in unlocking it. Make sure your motherboard will work, and FOLLOW DIRECTIONS!!!!!

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Gz1

[quote=Gz1;7339164]I Just unlocked my 550BE i tested 3 of them and got this stable as a rock.


Im on Liquid Cooling im going to try Oc. target 4ghz.

Tests start.. NOW Will be updating
update1 @ 3.5ghz

I am on bios 1003 many good changes
leaving the link here: http://asus.com/product.aspx?P_ID=2Y4dQFaJ6gPN18cQ

And currently at 3.5 stable. I left overclocking for physx enabling with ATI card present..


Update 1


I DID IT!!! here comes full system specs!




Physx enabled



Update2

ok now got it up and running! i went from 13k with 3dmark06 to the fearsome amount of:




nice!! who would think AMD and Nvidia together would make a great couple!

maddux

I just picked up a 0925...can't remember the rest and didn't right it down...I picked up the chip yesterday for my brother. Unlocked perfectly on a M4A79XTD EVO board with 0604 bios. Sitting at 3.4 with stock volts..

If anybody wants to get good chips that can probably unlock get them at newegg.

btw 50 pass burn test stable, so its rock solid.

figure out batch number 0925APBW

notzippy

GA-MA770T-UD3P - F4 Bios good for unlocking

nz

dm22

for those who've unlocked, what's the difference in lowest voltage that's required to maintain a certain OC & stable. mine is about 0.0375v.

3286 @ 1.3250v < = 3 cores - lowest voltage to maintain this speed
3286 @ 1.3625v < = 4 cores - lowest voltage to maintain this speed.

is it worth using 0.0375 volts to unlock 4th core, or should i use that 0.0375 to OC some more on tri?

edit: im not asking if u can unlock using stock volts, that's because most cpus are overvolted for stock anyways.

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3.64 Ghz quad Validation @ 1.525 Volts

3.71 Ghz tri Validation @ 1.525 Volts

raxen

That depends whether you find the four cores useful. Most gaming benchmarks show performance saturates at 3 cores anyway. In that case, if you can push for a higher OC a tri-core, go for it.

Voltages completely depend on the processor and your luck of the draw, so other people posting their voltages probably won't help you much. My 720BE won't run 4-cores @ 2800mhz unless I pump 1.35v into it. However, my 550BE will run 4-cores @ 3200mhz undervolted at 1.26v, granted one is a neutered 940 and the other a neutered 955, so the comparison isn't really fair...


WE BROKE 100,000 views in less than 4 months.

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Wanna UNLOCK your Phenom II X2/X3?? Check this guide out!!

dm22

i wanna ask that if i run Prime95, and NEVER found any "errors" after running for hours.. is that normal?

for the Bad OC it just crashes wit BSOD..... sometimes it crashes wit BSOD, sometimes it just restarts, which is better?

also i tend to use this for gaming+browsing, not much processing stuff .... however, i do use VMware to be able to load multiple copies of the same game...just thought 1 extra core would help VMware.. lol

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3.64 Ghz quad Validation @ 1.525 Volts

3.71 Ghz tri Validation @ 1.525 Volts