Asus Maximus Extreme and P5E3 Premium

Vantage Communications suite includes the following tests:

Communications 1 - Three simultaneous threads, Data encryption: CNG AES CBC, Data compression, Web page rendering: graphics content, 1024x768, windowed
Communications 2 - Three simultaneous threads. Web page rendering: open various news pages from IE 7 Favorites in separate tabs, close them one by one, Data decryption: CNG AES CBC, HDD: Windows Defender
Communications 3 - Windows Mail: Search
Communications 4  - Two simultaneous threads, Data encryption: CNG AES CBC, Audio transcoding: WMA -> WMA - to simulate VOIP

Same deal in the Communications test where the Intel-based rigs put up near identical benchmark scores.

Vantage Productivity suite includes the following tests:

Productivity 1 - Two simultaneous threads, Text editing, HDD: application loading
Productivity 2 - Two simultaneous threads, Windows Contacts: search, HDD: Windows Defender
Productivity 3 - HDD: Windows Vista start-up
Productivity 4 - Three simultaneous threads, Windows Contacts: search, Windows Mail: Run Message Rules, Web page rendering: simultaneously open various pages from IE7 Favorites in separate tabs, close them one by one

More of the same in the productivity test as well.  Only 9 points separated the Intel-based systems here.
 

The Vantage HDD suite includes the following tests:

HDD 1 - HDD: Windows Defender
HDD 2 - HDD: game HDD
HDD 3 - HDD: importing pictures
HDD 4 - HDD: Windows Vista start-up
HDD 5 - HDD: video editing
HDD 6 - HDD: Media Center
HDD 7 - HDD: Adding music to Windows Media Player

PCMark Vantage's HDD test suite showed the Intel-powered rigs with a slight edge over the AMD powered systems, presumably due to efficiencies built into the more up-to-date ICHR9 Southbridge over the aging AMD SB600.