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We achieved our previous record for HyperTransport overclocking on an Athlon 64 mobo using the Asus A8R-MVP. That board reached 325MHz stable. Here's what I got from the A8R32-MVP.

Add another 5MHz to the record and crown a new overclocking king. The A8R32-MVP happily booted into Windows and ran games at this speed. I did have to dial back the HyperTransport multiplier to 3X and overvolt the north bridge mildly in order to reach 330MHz, but it didn't take lots of drama or tweak to get there.

The A8R32-MVP Deluxe was especially forgiving when I overshot, too, powering back up after a failed attempt and prompting me that an overclocking attempt had failed. I didn't have to clear the CMOS once in order to get it to POST.

I will gripe about one omission, though: the BIOS doesn't include enough control over maximum and minimum CPU multipliers when overclocking in concert with AMD's Cool'n'Quiet power management technology. The board does allow for multiplier adjustments when C'n'Q is enabled, but they don't seem to take effect; the system just POSTs with the CPU at its max multiplier instead.

Power consumption
We measured the power consumption of our entire test systems, except for the monitor, at the wall outlet using a Watts Up PRO watt meter. The test rigs were all equipped with OCZ PowerStream 520W power supply units. All of these motherboards' onboard peripherals were enabled in the BIOS and proper Windows drivers were installed for them. The idle results were measured at the Windows desktop, and we used the potent combination of Cinebench's rendering test and the "rthdribl" DirectX 9 graphics demo to put load on the systems.

The graphs below have results for "power management" and "no power management." By "power management," we mean AMD's Cool'n'Quiet CPU clock throttling mechanism that kicks in when the processor is largely idle.

Whoa. Remember, these systems are not using different graphics cards here; each is running with a single GeForce 7800 GTX 512. The A8R32-MVP consumes much less power than the A8N32-SLI, which is likely a testament to the small, cool-running CrossFire Xpress 3200 north bridge and the fairly traditional ULi south bridge. Both chips in the nForce4 SLI X16 generate quite a bit of heat by contrast. For those into quiet computing, this difference in power consumption (which is directly related to heat generation) could be a big selling point for the A8R32-MVP Deluxe and other boards based on this chipset.