I am actually using the MSI K9a2 Platinum with a Phenom quad-core. I wouldnt go back to anything else.
Computer:
Computer Type ACPI x86-based PC
Operating System Microsoft Windows Vista Home Premium
OS Service Pack Service Pack 1
Internet Explorer 8.0.6001.18241
DirectX DirectX 10.0
Computer Name TALCAF
User Name nismo720
SMTP E-mail Address
nismo720@jmcomputersinc.com
Logon Domain talcaf
Date / Time 2008-09-24 / 23:01
Motherboard:
CPU Type QuadCore AMD Phenom 9850, 2500 MHz (12.5 x 200)
Motherboard Name MSI K9A2 Platinum (MS-7376) (2 PCI, 1 PCI-E x1, 4 PCI-E x16, 4 DDR2 DIMM, Audio, Dual Gigabit LAN, IEEE-1394)
Motherboard Chipset AMD 790FX, AMD K10
System Memory 3328 MB (DDR2-800 DDR2 SDRAM)
DIMM1: Muskin 991593 (996593) 2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-12 @ 266 MHz)
DIMM2: Muskin 991593 (996593) 2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-12 @ 266 MHz)
BIOS Type AMI (06/17/08)
Display:
Video Adapter ATI Radeon HD 4800 Series (512 MB)
Video Adapter ATI Radeon HD 4800 Series (512 MB)
Monitor HP w2007 [20" LCD] (CNN7422HKB)
Monitor Sony SDM-S71 [17" LCD] (4024819)
Multimedia:
Audio Adapter ATI Radeon HDMI @ ATI RV770 - High Definition Audio Controller
Audio Adapter Realtek ALC888/S/T @ ATI SB600 - High Definition Audio Controller
This board does support crossfire, I haven't been able to save up enough to get my additional 4850 yet myself. This was a clean simple install, pop in the board make the connections, everything worked fine in Vista right out of the box. I use this system for a little bit of everything, from web design to heavy graphics work to high-end gaming on a daily basis, I have no problems and great performance out of this setup.