[Solved] I have a problem with my Geforce GTX 550ti

umm guys i have trouble running bf3,nfstherun on high,med or even low and i try to set my lowest resolution
and it just adds like 2 fps and my current fps in these games are 12-15fps so if anyone knows this problem helpp
im worrying i just bought it new and all in the temp is 43 to 50 or 36 so i try to run the game on 9500gt well it runs well i got 20-30 fps so here is my specs (i know the power supply is important so i put it in below):


Processor:Intel Core2Duo E4600 2.4Ghz ( Newly formated 32-bit) tried (64-bit)
Ram:4Gb (3.34gb usable)DDR2
Geforce GTX550ti GDDR5
Details:
GPU Clock: 900Mhz
Shader Clock: 1800Mhz
Memory Clock: 2050Mhz
PSU:500watt +12v 22amps

so i really need help on this damn day i got my whole day searching about this but none i spent 3hrs looking for whats the problem i dont seem to find em

Advance Thnx for help
im lookin forward for this forum just new here and my first time to make a thread
by the way my max res is (1360x768) its not that big

Could you be a little more specific, is it laggy or does the game just crash?

im not sure at 22 to mybe lower i guess cuz 22 the highest so i put there im really a noob at this. and im using SATA on hard drives.dvdrw-rom