Hexus.net has published their ATI RADEON Xpress 3200 Shootout - ASUS A8R32-MVP Deluxe -v- Sapphire PURE Crossfire PC-A9RD580:

If you're an overclocker or you're looking to run high-end Crossfire, we can recommend the ASUS A8R32-MVP. Cheaper than its nForce4 SLI cousin, the A8N32-SLI, by about £20, the board managed 300MHz HTT while still maintaining a 5x HTT multiplier and the voltage ranges available should see almost any CPU and memory pushed to its reasonable limits.

The feature set is strong, ASUS adding strong additional ICs to the Xpress 3200 northbridge to produce a mainboard that gives little or nothing away to its peers in terms of on-paper feature lists. eSATA, HD Audio and good expansion posibilities (you keep 2 PCIc slots even with dual-slot Crossfire hardware) round off what we tested as a great high-end Socket 939 board. Your author ponders a swap to one, such is its quality.

It's a shame we can't say that about the Sapphire. The board's layout and provision of only one PCIc slot means that the strong performance, both in our benchmarks and while overclocking (300MHz HTT with 5x HTT multi, 340MHz with 4x), means that even a lower price of just over £100 can't see us recommend it.

The ASUS is worth the extra money and Xpress 3200 proves itself worthy on Socket 939, competing with nForce4 in terms of standard performance and overclocking, something which it was designed for. The ASUS is possibly ultimately outclassed by DFI's Xpress 3200 when pushed to maximal limits, DFI's Oskar Wu overseeing engineering of that board to an extent where it's entirely overengineered for most uses.