In our first test, all tested motherboards must achieve the highest
overclocking speed with all the BIOS settings left to Auto. This
means that each motherboard must calculate how much voltage the CPU
needs in order to be absolutely stable while operating in higher clock speed.
The memory dividers and the memory/FSB/MCH voltages are also left to
Auto. In other words this is the easiest overclocking you can do. For this test we use a retail Intel E6600 with it's CPU
multiplier locked at x9 and we raise the FSB until we get a perfectly
stable system (Orthos2004+PovRay running). An additional 8cm fan
was used for further cool the whole system.
Keeping the CPU multiplier at 9x, the P5K3 Deluxe WiFi achieved the
highest CPU speed with all the BIOS settings left to Auto. The
Asus P5E3 Deluxe WiFi was somewhat lower with 3420MHz.
Apart from the maximum overclocking speed, we have to find the
maximum possible FSB frequency with our used CPU. Again all BIOS
settings are left to Auto and the CPU multiplier is dropped to 6x.
The memory timings and the dividers are also left to auto. An
additional 8cm fan was used for further cool the whole system.
The performance of all the tested motherboards was similar with
490MHz FSB for the P5E3/P5K3 Deluxe WiFi and 480MHz for the Blitz
Our final overclocking test is intended to find how good a
motherboard is in overclocking the memory. In this test we used one
pair of SuperTalent's DDR3-1600CL7 with the following settings:
- Timings: 8-8-8-24-2T
- Voltage: 2.25V
- FSB:DRAM divider: 1:2
- Additional 8cm rotating fan
- All other BIOS settings left to Auto
By raising the FSB we tested the stability until we "hit the roof".
All the tested motherboards had a similar performance, while the Asus P5E3
Deluxe WiFi edition went somewhat higher...
- Overclocking stability
During our overclocking attempts, we didn't noticed any serious
problems. The motherboard would post after any failure with the
corresponding message prompting us to change the BIOS settings and
simply try again.