i dont see the point of building a computer with 3 graphics cards
every generation of cards are faster and they are usually equal to two of the last gens in terms of performance
get a single good gpu and enjoy it, upgrade when needed. you dont have to upgrade every series you can skip every two series to see better improvements for the buck.
yeah!at higher resolutions 1.2gb vram will bottleneck(AA/MSAA eats up a lot of vram ).your firstname.lastname@example.org is powerful enough.don't need any upgrade here.
i hope you have a quality 1200w to feed those 570s.if you can sell those 570s and collect some money then 7950 CF would be a sweet choice
It depends on the resolution you play at, how many screens, how important AA and AF is to you, what games you play, and what FPS you consider to be 'acceptable'.
As a general rule of thumb, assuming your setup 1080p, high quality settings, with just a little AA/AF, and finding 30+FPS acceptable:
entry level cards will only play old games properly
mid-level cards (550-560Ti) will game for 1-2 years
performance cards (570-590) will play well for 3-5 years
multiple cards will eek out an extra year per card for games that support SLi (which most do, but not all, and not all do it well)
So assuming you are playing at 1080-1200p then you should be able to keep up at high quality at playable fps (30+) for the next 5-7 years unless something dramatic happens in the game industry. Obviously, if 30fps is too low for your tastes, or if you are playing at higher res, or multiple monitors, or in 3D, or with 16xAA, then you will have to replace your cards much sooner, but as you did not give us much to go on that is my best guess.
If you require 60+fps then I would guess ~2-4 years
If at 120+FPS or 3D then I would guess 2-3 years
all of those nice parts and then 1333 ram? Really?
Was $15 just 'too expensive' to go with 1600? or did you recycle the ram from an old build? If it is not too late I would return the ram and get the faster stuff. I use 1333 for my build and it is 'good enough' but I am not a gamer with 3 GPUs in my rig either.
Should be set for at least 5 years, but as said before it depends what resolutions and details you intend to play it.
Generally going with the best single card set up you can afford, then adding a second when one just isnt cutting it anymore is the best way to do it. GTX 570's have been around for a while so im not sure where to motive came from to buy three.
A single 7970 would have been a better option. Then add a second one in a few years time when the price has dropped and more performance is required. Even then, selling the 7970 and buying the newest best single card set up could be a better choice.