Hi i'm from the philippines and im planning to get a decent graphic card for gaming..
my specs are:
Gigabyte motherboard MA78GM-US2H with chipset 780g with built in Radeon HD3200
AMD Athlon II x2 240 proc 2.8 ghz
2gb of RAM (planning to upgrade in the future after buying a decent graphic card)
since im using a motherboard with an ati chipset, im planning to get Radeon for my card so i could crossifre it with my built in gpu (if thats possible with some of the stuffs ive read)
due to availability and price my choices are:
Sapphire Radeon 4670 1gb ddr3 (priced at around 85 USD here)
HIS Radeon 5750 1gb gddr5 (priced at around 140 USD here)
HIS Radeon 5770 1gb gddr5 (priced at around 160usd here)
since i'm not planning to buy another gpu anytime soon to crossifre it as two discrete gpus, i might opt for an nvidia card:
Palit 9800GT 1gb dd3 256bit (115 USD)
Palit 9800GT Super 1gb ddr 256bit (130 USD)
Palit Geforce GTS 250 Green 1gb 256bit (152 USD)
Running Crossfire with the integrated graphics really isn't worth it, so don't worry about that.
As for what card to get, with what you've listed,the 5770 is the best option by far. the 5750 is about equal to the GTS250, and the 5770 is better, and only a couple bucks more. the 5770 is the the fastest of those cards by a good bit, and isn't much more than the cards that are even in the same range. The 4670 and 9800GT's are much slower, and not worth looking at compared to the 5770.
Not necessarily. It depends on if you are planning on getting a new monitor anytime soon. It also depends on what games you are planning on playing. The 5770 will be able to handle higher AA and detail settings for more intense games, like Crysis, Etc. However, you will probably have enough performance in a 5750 for most games, outside of those like crysis, to play on high detail settings, though you may not be able to push much AA.