Radeon HD 7770 1gb OC or 7790 1gb stock or 7770 2gb?

[Manatubear]

Im going to buy a new GPU, i cant decide between Sapphire Vapor-x OC 7770 1GB GDDR5 or the normal Sapphire 7790 1 GB GDDR5 or stock 7770 2Gb GDDR5 (some other not so known brand, VTX or something, cant remember). They are all at the same price where i live and i can only afford something in this range. Most of my gaming is on consoles, its only for light gaming (MMOs & and eventually some PC exclusive game that might interest me).
I have the 2gb 7770 last in the list because my gaming is limited to 720p/900p max, so i dont think i will make much use of the extra vram.
I assume that the stock 7790 can be OC a little bit too, making it better.
I have a A10 5800k and 8GB RAM 1600mhz.
I picked the A10 because the price i could afford would only get me a quad core @ 3.8 (either A series, piledriver or bulldozer) (yes, as stupid as it may be, they are all in the same price range here, so i went for one with integrated graphics so i could decide later on a GPU).
Im not bothered with crossfire, i assume that either the 7770 or the 7790 alone are much better than doing crossfire with a 6670.
Thanks!

 

[someone755]

The bigger VRAM versions only come into account when you run multiple monitors/high resolutions.
The 1GB 7790 will suit you best, if you're concerned about future-proofing. The 7770 will work for LOL and such, but may not be able to handle later games, at least not on high settings. The 2GB version of 7770 is a gimmick to low-res users.

All cards can be OC'd, but only rarely does it give you much performance increase (like 5 fps max).

And if you're gaming on consoles, you'll be able to run all of them on max 😛

 

[Francisco Costa]

Get the 7790, it's your best option.

 

[Manatubear]

The bigger VRAM versions only come into account when you run multiple monitors/high resolutions.
The 1GB 7790 will suit you best, if you're concerned about future-proofing. The 7770 will work for LOL and such, but may not be able to handle later games, at least not on high settings. The 2GB version of 7770 is a gimmick to low-res users.

All cards can be OC'd, but only rarely does it give you much performance increase (like 5 fps max).

And if you're gaming on consoles, you'll be able to run all of them on max 😛

Thanks!

 

[WhiteSnake91]

The 7790 will actually be pretty decent playing games on high at least. Not 60fps constant, but certainly above 30fps. Just depends how picky you are. I believe the equivalent of the hd7790 is in the Xbox One so you should be good.