The following is a list of settings each motherboard is capable of providing for your overclocking demands.
|BIOS Frequency and Voltage settings (for overclocking)|
|Row 0 - Cell 0||Asus Maximus III Formula||Asus P7P55D-E Premium||EVGA P55 Classified 200||MSI Big Bang-Trinergy|
|CPU Base Clock||80-500 MHz (1 MHz)||80-500 MHz (1 MHz)||133-300 MHz (1 MHz)||100-600 MHz (1 MHz)|
|DRAM Data Rates||BCLK x6 - x12 (x2)||BCLK x6 - x12 (x2)||BCLK x6 - x12 (x2)||BCLK x6 - x12 (x2)|
|PCIe Clock||100-200 MHz (1 MHz)||100-200 MHz (1 MHz)||80-200 MHz (1 MHz)||90-190 MHz (1 MHz)|
|CPU Vcore||0.85-2.10V (6.25mV)||0.85-2.10V (6.25mV)||1.00-2.30V (6.25mV)||0.90-2.10 (6.25mV)|
|Uncore Voltage||1.01-2.00V (13.25mV)||1.10-1.90V (6.25mV)||1.05-2.00V (25mV)||0.48-2.09V (16mV)|
|PCH Core||1.01-1.35V 13.25mV)||1.05V, 1.15V||1.05-2.625V (25mV)||0.45-1.95V (15mV)|
|DRAM Voltage||1.21-2.50V (13.25mV)||1.20-2.50V (12.5mV)||1.20-2.60V (10mV)||0.93-2.43V (15mV)|
|CAS Latency||3-11 Cycles||3-11 Cycles||3-15 Cycles||4-15 Cycles|
|tRCD||3-15 Cycles||3-15 Cycles||3-15 Cycles||3-15 Cycles|
|tRP||3-15 Cycles||3-15 Cycles||3-15 Cycles||3-15 Cycles|
|tRAS||3-31 Cycles||3-31 Cycles||9-63 Cycles||9-31 Cycles|
While all of today’s motherboards offer fairly aggressive voltage levels, we keep ours consistently moderate to prevent CPU damage.
The top-three motherboards provide identical overclocking capabilities, proving the maturity and consistent quality of these high-end products. Any difference of less than 22 MHz is nothing more than a “rounding error” when a 22x multiplier is used.
Moderate voltage levels don’t lend themselves to record-breaking base clocks, but the EVGA P55 Classified 200 still stands out by achieving good results from our modest effort.
MSI surprised us with a super-high DRAM data rate at mild 1.65V DIMM and 1.30V Uncore settings. Increasing the configuration to four modules handed the average lead back to Asus.