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Unlocking the 4th core in my athlon II x3 440

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March 18, 2010 1:51:49 PM

Hi all,

I have been trying to unlock the 4th core but every time i do it will restart the computer and just sit there, it will be on but wont do anything, so i have to restart the computer and it will tell me that only 3 cores are running. (it says it in a mocking way too)

does anyone have any advice? i set it to unleashing mode too but that didnt help at all.

MOBO is Asus m4a785-m

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March 18, 2010 2:07:53 PM

What psu are you using? Maybe the psu aint supplying enough to the overclocked cpu!
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March 18, 2010 2:11:54 PM

its a 410 watt one, I cant tell what brand though, it came with the case which is a HP workstation xw4200.

I wouldnt think it was that because i have OC it from 3 ghz to 3.30 without any hiccups.
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March 18, 2010 2:15:33 PM

maybe the core's genuinely defective?
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March 18, 2010 2:24:11 PM

List your system specs please:
maybe the 410w isn't enough
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March 18, 2010 2:57:13 PM

AMD athlon II x3 440

2 Gigs of DDR2

1 hard drive

1 disc drive

Nvidia Geforce 9800 GT
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a b à CPUs
March 18, 2010 3:01:09 PM

You do realise there's a reason the 4th core is locked?

IT'S BROKEN

It's only ever been the luck of the draw that you can get cores unlocked and working - some people can, some can't.

Try throwing more voltage into the CPU to see if that helps, but the chances are you have a core that's actually and properly defective, so it's not going to work.
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March 18, 2010 3:03:03 PM

Yes, i do realize that it might not work. I am not stupid.

I was just wondering if anyone knew if i was doing anything wrong.
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March 18, 2010 3:03:55 PM

I'm still convinced the psu is to blame. What is the power distribution on your psu??
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March 18, 2010 3:16:10 PM

i dont know, will it say on the side of the psu?
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March 18, 2010 3:30:20 PM

Yap!
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March 18, 2010 4:05:16 PM

I cant find it,

I am planning on upgrading to a nice Rosewill power supply soon anyway so it will wait until then
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March 18, 2010 4:05:28 PM

Best answer selected by neonmonkey.
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March 18, 2010 4:08:43 PM

I'ld prefer you look for a corsair or OCZ psu. Rosewill are known to make really crappy psus, unless it is the 80+ certified one (which i still doubt).

Look for credited brands like coole master, ocz, carsair and antec.
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a b à CPUs
March 18, 2010 4:11:17 PM

^ I wouldn't go for a Cooler Master either to be honest

Corsair, some OCZ, Antec, Seasonic

And honestly I'm not convinced it's the PSU - locked cores are usually locked for a reason. I think you have a genuinely defective core.

Let us know how it turns out.
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March 18, 2010 4:32:46 PM

Y.eah
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March 19, 2010 4:42:31 PM

Ok, Do you guys know if XFX psu's are any good?

and in the BIOS when it says "value all cores -2% -4% +2% +3% ect" does that have anything to do with it? it is set on -2%
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a b à CPUs
March 19, 2010 8:33:58 PM

Corsair, some OCZ, Antec, Seasonic

I've seen some XFX PSUs explode when pushed too hard.
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a c 105 à CPUs
March 19, 2010 8:48:54 PM

LePhuronn said:
Corsair, some OCZ, Antec, Seasonic

I've seen some XFX PSUs explode when pushed too hard.



...xfx PSU are seasonic units with the XFX name on them, and they are very good PSU often cheaper then the exact same Seasonic model

let me get this straight, the OP needs to upgrade the PSU, a more then likely defective 4th core, because you believe a 410w generic PSU can not power a 89w CPU????

if the 4th core could even be turned on (still may not work) then CPU-Z would have stated it.
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a c 105 à CPUs
March 19, 2010 8:57:02 PM

LePhuronn said:


And I never said he needed a new PSU, it just seems to be the opinion that the existing PSU is at fault.


i was talking to starges, too many posts to reply to in one post :) 
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a b à CPUs
March 19, 2010 9:01:03 PM

lol no worries dude
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a b à CPUs
March 19, 2010 9:04:03 PM

I doubt the core is good and the PSU is causing the problem. If the core is unlockable it should unlock and show, at least in BIOS, as a quad. I have an Athlon II x3 unlocked, and it shows as a phenom II x4 in BIOS. If it won't boot right and then shows as an x3 again, it means it couldn't boot with those settings and reset to the default settings- wouldn't have done that with a bad PSU I don't think. Well- let us know if it unlocks with a new PSU.
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March 27, 2010 5:29:00 PM

unlocked x3 440 into phenom ii x4 b40..... $85 quad at 3ghz... ran prime,everest for 24hr each.... fully stable....jackpot..... unlocked with $71 MSI 770 T C45 mobo......
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June 19, 2010 5:23:54 PM

if there is no ecc firmware option you have to update the BIOS then
make sure ecc firmware is set to hybrid
acc set to all cores or auto
and try turning cool and quiet off I have this helps some
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