This might be old news, but I just saw that Asus has added the A8N-SLI motherboard to their website.  This of course is their nForce4 SLI motherboard that supports dual PICe graphics cards.  Expect an article on it very shortly.  Here is the specification list:

Asus Adds A8N-SLI to Website - Motherboards 3
CPU Socket 939 for AMD Athlon 64FX / Athlon 64
AMD64 architecture enables simultaneous 32- and 64-bit computing
Front Side Bus 2000 MT/s
Memory – 4 x 184-pin DIMM Sockets support max. 4GB DDR400/DDR333/DDR266 non-ECC un-buffered DDR SDRAM memory
– Dual Channel Memory Architecture
Expansion Slots – 2 x PCI Express x16 slot
*SLI mode : both x16 slots operate as x8s
*Default mode : one operates as x16 and the other as x1
– 2 x PCI Express x1
– 3 x PCI
SLI Dual PCIe x16 slot support two identical SLI-ready graphics cards
Single PCIe x16 slot supports all PCI Express graphics cards
ASUS PEG Link for dual PCIe graphic cards
Storage/ RAID NFORCE4 Storage:
– 4 x SATA 3Gb/s
– 2 x UltraDMA 133/100/66/33
– NVRAID : RAID0, RAID1, RAID 0+1 and JBOD span cross SATA and PATA
Silicon Image 3114R RAID controller:
– 4 x Serial ATA with RAID0, 1, 10, 5 (RAID 5 software patch available, no WHQL)
LAN NFORCE4 built-in Gbit MAC with external Marvell PHY :
– NV ActiveArmor
– NV Firewall
MARVELL PCI Gbit LAN controller :
Audio Realtek ALC850, 8-channel CODEC
Audio Sensing and Enumeration Technology
Coaxial/Optical S/PDIF out ports on back I/O
IEEE 1394 TI 1394 controller supports 2 x 1394 ports
USB Max. 10 USB2.0 ports
ASUS AI Proactive Features AI NOS(Non-delay Overclocking System)
AI NET2 network diagnosis before entering OS
Overclocking Features – AI NOS (Non-delay Overclocking System)
– AI Overclocking (intelligent CPU frequency tuner)
– CPU, Memory, and PCIe x16 voltage adjustable
– SFS (Stepless Frequency Selection) from 200MHz up to 400MHz at 1MHz increment
– Adjustable PCIe frequency from 100MHz up to 200MHz at 1 MHz increment
– Adjustable FSB/DDR ratio. Fixed PCIe/PCI/SATA frequencies.
– ASUS PEG Link for single/dual graphics cards
– ASUS C.P.R.(CPU Parameter Recall)
ASUS Special Features Post Reporter
ASUS CrashFree BIOS 2
ASUS MyLogo2
ASUS Multilanguage BIOS
ASUS Instant Music
ASUS SLI warning LED
BIOS 4 Mb Flash ROM, AWARD BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.3
Back Panel I/O Ports 1 x Optical + 1 x Coaxial S/PDIF Output
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x Parallel
1 x RJ45
4 x USB 2.0/1.1
8-Channel Audio I/O
Internal I/O Connectors 3x USB 2.0 connector supports additional 6 USB 2.0 ports
1 x IEEE1394 connectors
1 x Paraller connector
1 x COM connector
1 x GAME/MIDI connector
CPU Fan / 2x Chassis Fan/ Power Fan/ Chipset Fan connectors
Front panel audio connector
Chassis Intrusion connector
CD audio-in connector
24-pin ATX Power connector
4-pin ATX 12V Power connector
Support CD Drivers
ASUS PC Probe – PC Health Monitoring Software
ASUS LiveUpdate Utility
NVIDIA nTune Utility
Anti-virus software (OEM version)
Accessories 1 x1-port IEEE1394 module
8 x Serial ATA cables
1 x SATA Extension module for external devices
4 x 2-port SATA power cable
1 x 2-port USB2.0 / Game module
1 x COM Port module
1 x UltraDMA 133/100/66 cable
1 x IDE cable
1 x FDD cable
1 x I/O Shield
User’s manual
Setting Sticker
WinDVD Suite
Form Factor ATX Form Factor, 12″x 9.6″(30.5cm x 24.5cm)
Asus Adds A8N-SLI to Website - Motherboards 4