First off,Let me tell you i just know the basics of computer hardware,so pardon me if i sounded like an idiot
MY COMPUTER SPECS
Intel core 2 duo E4500 @ 2.20 Ghz
Intel G41 Express Chipset (graphic card)
3Gb DDR2 RAM @ 667 Mhz
Win 7 Ultimate 32 bit
450W mercury PSU
I have a lot of questions so let me list them out
1)When i play games like FIFA 08,Fifa 11,Assasins creed brotherhood My monitor turns off after playing for some time so I manually have to shut down.It shuts down in low resolution so i am 99.9% sure this is because of my graphic card.But i need someone to confirm this
2)Is my processor good enough for modern day games? I don't wanna play in max graphics but at the same time i dont wanna play on mid or low setting..I just want the graphics to be somewhat more than mid and play without any lagg with good fps..So is my processor good for gaming or is it bad?
3) I am gonna get a new graphic card soon But i am not sure which model i should buy....GTX 460 or GTS 450?I know GTX 460 is better,but is GTS 450 good for all modern games(on mid settings) and wont be outdated in a few years?
4)I called my computer techinicians ,they said my RAM is DDR2 and wont support GDDR5...Is this true?
Thank you in Advance...

MY COMPUTER SPECS
Intel core 2 duo E4500 @ 2.20 Ghz
Intel G41 Express Chipset (graphic card)
3Gb DDR2 RAM @ 667 Mhz
Win 7 Ultimate 32 bit
450W mercury PSU
I have a lot of questions so let me list them out
1)When i play games like FIFA 08,Fifa 11,Assasins creed brotherhood My monitor turns off after playing for some time so I manually have to shut down.It shuts down in low resolution so i am 99.9% sure this is because of my graphic card.But i need someone to confirm this
2)Is my processor good enough for modern day games? I don't wanna play in max graphics but at the same time i dont wanna play on mid or low setting..I just want the graphics to be somewhat more than mid and play without any lagg with good fps..So is my processor good for gaming or is it bad?
3) I am gonna get a new graphic card soon But i am not sure which model i should buy....GTX 460 or GTS 450?I know GTX 460 is better,but is GTS 450 good for all modern games(on mid settings) and wont be outdated in a few years?
4)I called my computer techinicians ,they said my RAM is DDR2 and wont support GDDR5...Is this true?
Thank you in Advance...