Hardware used for testing the motherboards:

• Intel Core 2 E6400 processor (Socket LGA775, 2.66 GHz, two cores)
• XFX GeForce 7800 GT video card
• BFG 8800GT OC video card
• Noctua NH-U 12 heatsink with two 12cm fans
• Seagate Barracuda 7200.9 SATA2 drive
• Corsair HX620W Modular power supply
• Gigabyte X38-DQ6 Quad motherboard (X38 based)
• MSI P35 Platinum Combo motherboard (P35 based)
• Asus P5E3 Deluxe WiFi motherboard (X38 based)
• Asus X38 Formula Maximus motherboard
• Gigabyte P35-DS3R motherboard (P35 based)
• 2 * 1024 MB Corsair PC2-8888 memory @ 4-4-4-10/2T (for DDR2 motherboards)
• 2 * 1024 MB OCZ PC3-10666 memory @ 7-7-7-20/2T (for the Combo motherboard)
  
• 2 * 1024 MB OCZ PC3-14400 memory @ 4-4-4-10/2T (for DDR3 motherboards)

Here is a listing of all the tests we performed:

• PC Magazine Business Winstone 2004
• PC Magazine Multimedia Content Creation 2004
• RightMark Memory Analyzer
• SiSoft Sandra 2007 CPU, MMX, Memory Benchmarks
• HDTach
• WinRAR 
• TMPGEnc MPEG2 Encoding
• XviD Video Encoding
• LAME MP3 Encoding
• Call of Duty
• Doom 3
• Quake 4
• Comanche 4
• Halo
• Jedi Knight: Jedi Academy
• Unreal Tournament 2004

NVIDIA's ForceWare 169.12 video drivers were used.