Please Help !

Hello there

I want to build a new system for gaming (its a low to mid range).

I'm confused between two setups (mobo/cpu combination):

1) msi g31 mobo with Intel E5300 (wolfdale).

2) Biostar MCP6PB M2+ (nvidia 6150) with AMD Athlon 7450 X2 (Kuma).

So please tell me which is better knowing that the price of the two setups is the same ($5 difference).

vga: EVGA GT 240 1GB DDR5.

Memory: 2GB DDR2 800MHZ Kingston.

Thanks.