More pixels , means you need a more powerful gfx card . Yje 5770 is definitely the stronger of the two
before you buy make sure the motherboard has a x16 PCI-e slot for a graphics card . Some motherboards in systems like that dont . They are built down to a price and they cannot be upgraded or expanded .
You may be better off building your own system . It might cost a bit more , but it will be exactly what you want
What is your total budget ?
uhh well i proably wouldnt get the moniter and crap with it i'd proably keep my old moniter and just keep the computer but my native resolution is 1280x1024 and i know the 5770 is the better one lol im just not sure if the power supply will handle it, and my computer is from 2007 and its motherboard has a pcie x16 and the only reason im buying a new computer is becuase my old computer only supports am2 CPUS (i know get a new motherboard) but im to lazy so will it be decent with bassically any game like gta IV (bad port i know) Tf2 and so on... at 1280x1024 hopefully maximum but i dont really care
The monitor in that package is 1920 x 1080.....as the the question as to "will it be alright/decent for gaming ?"....define decent. If you want to play the new DX11 games at HD resolutions and full detail settings, consider the 5830 the entry point.
At your existing monitor's resolution just about any $60 vid card will handle it.
no im not buying the moniter i like my 1280x1024 lol i don't need a massive resolution's lol and i just want the 5670 and i might not even get that and buy 270$ in upgrades im just thinking which would be better...