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The P55 Challenger, Continued

ECS P55H-AK: P55/NF200 Versus X58 In 3-Way SLI
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ECS P55H-AK Basic O/C Settings
BIOS Versionv.1.0 (08-04-2010)
CPU Core -.090 to +0.945 Volts (15 mV), 100-600 MHz BCLK (1 MHz)
CPU IMC -0.80 to +0.63 Volts (10 mV), 16x-18x BCLK (2x)
Memory -0.8 to +0.63 Volts (10 mV), 3x-6x BCLK (1x)
Memory TimingtCL 3-15, tRCD 3-15, tRP 3-15, tRAS 9-63 Cycles (1c)
Chipset -0.8 to +0.63 Volts PCH


The P55H-AK has a wide range of voltage settings and a high-enough frequency ceiling to assure that the overclocking limits of nearly any LGA 1156 processor can be reached.

Though the BIOS menu of the P55H-AK is advanced from ECS’ previous high-end attempts, it’s still a little basic compared to its hardcore competitors. Little items, such as having to set the “Performance Level” to Enhanced just to unlock multiplier controls are somewhat annoying.

Simplicity can be a good thing for beginners however, and we certainly found enough adjustments to set up our processor just the way we wanted. DRAM, for example, was changed to DDR3-1600 at CAS 7-7-7-21, using a 200 MHz BCLK to reach a CPU clock of 4 GHz.

A 1.38 V setting allows our Core i7-870 to run happily at 4 GHz at low heat, producing an actual voltage of approximately 1.36 V. A 14-phase voltage regulator keeps the system extra stable, just in case we need more.

ECS includes three flexible SLI bridges, allowing builders to configure three-way SLI by using the longer bridge to cross the other two bridges at the center card. The extra-important front-panel USB 3.0 breakout plate is also included, along with a slot-panel adapter for those who prefer more connections out back.

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