It is not x fire nor sli capable. I think it is capable for Phenom processor, I will update soon I got the original manual of the board.
For additional info:
MSI 7388 (K9A Neo2-S) motherboard - 1 pciex_16; 2 pciex_1; AM2+; 3 pci; AMD 780 & SB 770 chipset
Operating system: Windows 7 Home premium
Applications: Office 2007,
Games: Monster vs Alien; Transformers (I dont play games, only my children does: age 11 & 8)
HDD: 500 gb & 320 gb 7200 rpm Barracuda Seagate
Can I use still my 9500 GT with GTS250? It is worth it to upgrade the processor?