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Testing the NSE threw up a couple of curious issues. Our sample was supplied with BIOS 0305 and Asus sent through version 0403 as an update but neither the Windows-based Asus Update utility nor the updater in the BIOS would accept the file. The update failed with a message that ‘the file wasn't recognised for this model.' We've had similar problems with two other Nvidia chipped Asus boards in recent months so there appears to be a common theme developing. Rather than booting into DOS and forcing the issue - with the very real possibility of bricking the NSE - we played safe and stuck with BIOS 0305.
The other issue was our power supply which is an Enermax Galaxy 850W. We were testing with a single GeForce 8800GT and the system refused to start until we changed to a tiddly Antec 550W PSU. We've had similar trouble in the past with AMD motherboards from Sapphire but these tended to be low or mid-range models that have a low power draw. It was a real surprise that the NSE didn't have enough of a kick to spur the Enermax into life.
We tested with a Core 2 Extreme QX9650, rather than a QX9770, as we doubt that many members of the buying public will splash out £900 for the privilege of a 1,600MHz front side bus.
The Asus BIOS has a colossal list of options but despite that the layout is clear and logical. We knew our Kingston KHX13000 memory would require extra voltage so we used the hardware monitor feature to check the default voltages and then got busy overclocking. We raised the CPU voltage from 1.28V to 1.45V, RAM voltage from 1.64V to 1.9V and the Northbridge MCH voltage from 1.31V to 1.56V.
We had no trouble raising the clock multiplier from 9x to 11.5x on the stock 333MHz front side bus which raised the CPU speed from 3.0GHz to 3.83GHz. Naturally that increased performance handsomely but we were unable to raise the front side bus by any useful amount and still complete PCMark Vantage.
So far we had kept the RAM speed at 1,066MHz but we needed to look at memory speed to see whether the NSE could match the Striker II Extreme. Raising the memory speed to 1,333MHz was easy enough but couldn't maintain the same memory timings. We had to slow the settings from 7-7-7-20 to 8-9-9-26 which resulted in lower performance than running the memory at 1,066MHz with tighter latencies. Going for broke we bumped up the memory to 1,600MHz and had to slow the latencies ever further to 8-11-11-30. This lowered performance even further and convinced us that memory speed is pretty much irrelevant on a standard front side bus.
Based on our results you'd be well advised to buy the NSE rather than the more expensive Extreme but you're still spending a small fortune for the privilege of running SLI.
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