Product: Asus M4A89GTD Pro/USB3
Company: ASUS
Authour: James Prior
Editor: Charles Oliver
Date: March 2nd, 2010
Overclocking, Core Unlocking Performance

Overclocking our AMD Athlon II X3 440 from it's stock 3.0GHz was simple: we entered the BIOS and selected the OC Tuner Utility, and waited. One restart later the system booted to Windows 7 desktop at 3491MHz, @1.5v vCore.

3.5Ghz X3
3.5Ghz X3

Easy Overclock - RAM
Easy Overclock - RAM

Core Unlocking

Next we tested the core unlocker. We flipped the core unlock switch on the motherboard, while the system was powered off. Upon powering on the system, we found the CPU detected as an AMD Phenom II X4 B40. Of course, this didn't unlock any extra L3 cache, but we now had a quad core CPU. Hitting the OC Tuner we I again booted to Windows 7 desktop at 3491MHz.

You can achieve the same results from the desktop, using the ASUS TurboV tool and clicking the autotuning button. After rebooting you will be shown the overclock speed. Using the ASUS TurboV utility, we were able to overclock the base clock a little more to get a Prime95 stable 3675MHz.

ASUS TurboV Overclocking
ASUS TurboV Overclocking

Unlocked Athlon II X3 440
Unlocked Athlon II X3 440

Unlocked & OverClocked Althon II X3 440
Unlocked & OverClocked Althon II X3 440

The only downside the unlocking operation had was to remove accurate CPU core temperature readings. Unlocked all four cores registered a steady 32F temperature, which is a little improbable under Prime95 load and air cooling.

CPU Tests

To see how the core unlock and overclock affects CPU performance, I used two simple tests to benchmark the different speeds and core counts. SuperPI is a single threaded benchmark, and here was used to show how fast 1M digits of PI can be calculated. wPrime is a multi-threaded benchmark, used here to calculate the square roots of a given number using Newton's method of estimating functions. Here a 32M seed was used.

SuperPI Results
SuperPI Results

wPrime Results
wPrime Results

As you can see, the single threaded SuperPI only responds to clock speed. This is similar to older games that only use one or two threads. Prime scales sideways into the additional core much better than with extra MHz, showing how parallelism can give much larger performance gains for some applications.


content not found


Copyright 2022 © Rage3D.com

You may not use content, graphics, or code elements from this page without express written consent from Rage3D.com

All logos are trademarks of their original owners. Used with permission.