Discussion in 'General Hardware' started by [I.R.A]_FBi, Nov 29, 2009.
bump for u athlon guys
The newer versions of Gigabyte Bios also does that now.
So do Asus boards a while ago.
This is really interesting. AMD has 3 main cores:
Deneb - 4 cores, 6MB L3
Propus - 4 cores, no L3
Regor - 2 cores, no L3
One would think that an Athlon X3 would use the Propus core with 1 core disabled. But instead they are using Deneb cores with 1 core and L3 cache disabled. This sounds insignificant, but I think this really says something as to what's going on behind the scenes. Why use a larger die when you already have a smaller one that does the same thing? Maybe this suggests production issues with smaller dies? Maybe a surplus in Deneb dies? Hm.
Great article, thanks for finding it and posting.
damn... the two A II chips i have access two are propus and regor
I just built a system for a friend of mine with a X3 and the Gigabyte GA-MA770T-US3. They have a Beta bios for this board that has core control so I'm gonna try sometime this week to flash his board with this and see how it handles.
I love AMD's attempt to stop this...
Or is AMD trying to keep that "ACC accident" happening?
ACCident is the REAL name of the feature
"oops, we left some free performance for you, Mr. journalist..."
Not sure about the cahce thing but here's a list for MSI motherboards that has the unlock cpu core feature:
which motheboards can you do this on?
anything by ASUS?
As far as I know all the AM3 boards from Gigabyte /ASUS/ MSI
Also some Biostar boards can also unlock.
Basically you need to check the southbridge used on the board.
You need SB710 or SB750.
Seems interesting and handy, but me got no AMD cpu
fuck, i have an AM2+ board
Which board is it?
At lease all 790GX boards I know have SB750.
i think it's the 780G chipset
I think prohaps the same reason Graphics cards are different sized dies because some are larger to let out more heat at one time it depends on how that processor deals with the heat in test on what die needs to be issued to that processor. HD 4770 has small die compared to other GPU's and deals with heat just fine because the nano tech is smaller see!
Your board uses the old SB700 southbridge.
Which means it has no ACC.
Which means it won't unlock anything, be it cache L3 or an extra core.
785G boards come with SB710, which lets you play with ACC. its what my media PC has (and its sexy, albeit my CPU cant be unlocked.... but hey, 2.8GHz 1.1v )
AMD more cores please
I worked a little on the system I built for a friend last night. Not sure if this works with the Athlon II X3 425 but I flashed to the beta bios for his Gigabyte 770 AM3 board and messed around with the core unlocks. I cannot enable core 2 in the bios unless he just wants to stare at the BIOS post screen all day. When in Vista it shows a X4 B25 but neither AMD CPU Info or CPU-Z1.52(when it works) show L3 cache. I'm gonna hopefully mess around some more tonight and see if I can get that L3 cache for him.
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