http://www.asus.com/products2.aspx?l1=3&l2=15
took about 30 seconds to actually go to asus's website and find out... can't believe you waited 3 hours before bumping your post and never actually trying to find out for yourself.
A8N-SLI
-Supports AMD Socket 939 Athlon 64FX/Athlon 64
- NVIDIA nForce4 SLI
- PCI Express Architecture
- SATA 3Gb/s
- NV RAID
- AI NET2
- NV Firewall
- AI NOS?
- AI Audio (8-channel Audio)
A8N-E
-AMD Socket 939 Athlon 64FX / Athlon 64
- NVIDIA® nForce? 4 Ultra
- PCI Express Architecture
- SATA2.0
- AI NOS
- PEG Link
- Precision Tweaker
- AI NET2
they are different chipsets and have quite different features.