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460 or GTS 450?I know GTX 460 is better,but is GTS 450 good for all modern games(on mid settings) and wont be outdated in a few years?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?
If you get the GTX 460 or the GTX450 I would suggest upgrading your power supply.Your Ram won't affect the GPU. The processor is pretty slow if you want to play high-end games like Crysis 2. It should be fine for games like Fifa and Assassins Creed.
2)You've got a dual core E4500, so it isn't ideal for gaming these days. If you're thinking of upgrading, then go for a good quad core CPU.
3) The GTX 460 would be bottleneck on that system and so it would not perform the way it's supposed to perform.
Get the GTS 450 instead.
4) Even if you've got DDR2 RAM, it DOES NOT mean that it can't support a GDDR5 GPU. Honestly, why do they even call themselves as 'technicians' ? The RAM is a bit slow though, 667 MHz.
ALSO: Even if your PSU is a 450 W one, I don't think it's a good one since it might be the one that came with your PC cabinet. A GTS 450 requires a 6-pin Pci-e connector and therefore I'm not sure it will be able to run it.
If you are thinking of upgrading that PSU, then get a GTS 450. Otherwise, I'd get a Radeon HD 6670. It's the best performing card that doesn't require an external power connector.