Whats The Difference With These 2 Boards

[Exibit]

HI Guys

Whats The Difference With These 2 Boards

Asus P5N32-E SLi nForce 680 (Socket 775) PCI-Express DDR2 Motherboard
http://www.overclockers.co.uk/showproduct.php?prodid=MB-209-AS

Asus P5N32-E PLUS SLi nForce (Socket 775) PCI-Express DDR2 Motherboard
http://www.overclockers.co.uk/showproduct.php?prodid=MB-222-AS

Now I can see one of them has a 680i chipset though they seem to be the same cost or there abouts are the chipsets different ?? Is one of them better than the other god I am confused.

Asus P5N32-E SLI PLUS C55, S 775, PCI-E (x16), DDR2 533 667 800, SATA II
Manufacturer: Asus

Form Factor: ATX

CPU Socket: 775

FSB/HT Speed: 1333 MHz

Chipset: C55

What is that chipset on this board C55 - ???

Help please

 

[hai]

I think the Plus uses a 650i northbridge. Review http://www.bit-tech.net/hardware/2007/02/06/asus_p5n32e_sli_plus/1.html