My PC specs are:
MOBO: Intel DQ965GF
CPU: Intel Core 2 Duo E6320 1.86GHz
RAM: 2GB DDR2 667MHz
I'm between Asus GT240 512 GDDR3, Palit GT440 1GB GDDR5 and Sapphire HD5770 1GB GDDR5.
By far 5770 is the best one but in order to get the 5770 I'll have to buy a new PSU. On the other hand the GT240 and GT440 don't require more power. Is it worth getting the 5770? My main purpose will be gaming. What's the difference between the three cards? Can you give an example of a game which I won't be able to play decently in any of them?
For gaming I wouldn't recommend anything less than a 5770/GTS450.
If your 350w is a quality brand, you could probably get away with it up to a GTS450. I wouldn't buy any cards with DDR3 and 512mb isn't enough for today's games (or yesterdays)
No matter which one you choose, your going to have to overclock your cpu. 1.86ghz just isn't fast enough to keep up with even a low end graphics card like GTS450.
How can I be sure if my PSU will support my card. How about a 5670? Even with a 5670 I would be happy if I don't have to change my PSU.
Overclocking my CPU cannot be done because unfortunately my motherboard is Intel and doesn't support overclocking. The only reason I need a new graphics card is for gaming but I'm not that demanding because otherwise I would need a whole new PC.
Well i think that you should go with hd 5750.it should run on that supply.i personally do.i have a a4zone 350w with 20amps and card runs damn good.it has horsepower and has dx11,that you would like.if you want extreme performance then go with hd 6850.but if you dont wanna upgrade psu then hd 5750 is way to go.