Need graphics help

help please i am lost i just bought a evga gtx 560 for my system with a new power supply to power it i first wana know what i can run on BF3 and batman, and also when i play BF3 it crashes after like 10 min, would like to know whats wrong. im running the latest drivers b4 beta like 280 i think did driver sweeper to remove the older 1. heres my setup

CPU amd 965 BE OC to 4.0ghz
Mobo MSi 870u G55
4gb DDR3 OC to 1600mhz
EVGA gtx560 fermi
PSU= thermaltake TR2600w it has 23a on +12v1 and 20a on +12v2
my GPU said it needed 24a but the card uses 2 6-pin PCI connectors
i was told at Frys it shouldnt be a problem with pushing it since all my OC on cpu and ram i didnt touch the voltage.

so please let me no how high i should b able to crank settings also its on acer 22inch 1680x1050 rez so no 1080p lol
i aslo play skyrim n crysis 2 never have a problem with it crashing and skyrim is on ultra high no problem just battlefield please help