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Athlon II X3 435 Overclock / Unlock 4th Core?

Last response: in Overclocking
February 12, 2010 12:33:54 AM

Hi All,

Just bought an Athlon II X3 435 along with a ASUS M4A77TD Motherboard and stumbled across stories about unlocking the 4th core and even sometimes even the L3 cache (rare).

Given my Motherboard:

1. Could I attempt to do this? Not sure if the BIOS would support this

2. Should I attempt to do this? If it doesn't work, can I revert to turn off the 4th core without damaging the other 3 cores that I actually paid for

3. If I could and should try, how do I do it?

Also - does anyone know of a good guide for Overclocking the Athlon II X3 or can give me some direction based on my Motherboard? I overclocked a P4 some years ago but that was pretty simple and reading articles, i'm not exactly sure how to overclock the new CPU. I plan on running the stock HSF for now so it will be a gentle OC (was hoping for 3.3, maybe).

I read that because it's not a BE, the multiplier is locked and I will have to up the voltage that would also affect the RAM.

If it helps, here are the details of my build that's on it's way:

Athlon II X3 435
A-Data 2x2GB DDR3 1600
HD 4670 1GB Video Card
Windows 7 Home
Samsung Spinpoint F3 500GB
Cooler Master 460W PSU


Best solution

a b K Overclocking
a b V Motherboard
February 12, 2010 12:51:03 AM

Try doing what I did, NOTE : Your Bios may look different than mines. just giving you an example

February 12, 2010 7:37:29 PM

Isn't unlocking cores limited to Phenoms only?
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February 12, 2010 11:56:20 PM

Here's hoping the 435 on my way is just a dumbed down Phenom II X4... :) 
a b K Overclocking
a b V Motherboard
February 13, 2010 9:17:27 PM

cross your fingers buddy =) , you might get lucky..

even if you do not unlock you have a great CPU regardless...
February 27, 2010 12:16:24 AM

Best answer selected by jabrony76.
a b K Overclocking
a b V Motherboard
February 27, 2010 1:41:16 AM

im glad it worked out for you..