An interesting question ... in some ways, all three of these videocards are close in power (gaming performance)
That being said, the 570 is almost three years old and uses much more power (TDP is over 200 Watts) while the other two 650 Ti Boost and 7850 use much less power.
If there are specific games you play ... you could choose based on any differences between the cards.
If not ... then choose based on price, or if you have a preference for the features of the AMD or NVIDIA videocards
If your budget can hit $200 ... then the new R9-270x (based on the 7870) or the 660 (around $180) outperform all of these choices.
If you budget is lower than $180 then I would choose between the 650Ti Boost and 7850 based on the best price you can find a 2GB version of either of these videocards
Avro Arrow said:
The GTX 570 will melt your case. Fermi runs hot and uses more wattage than a Radeon HD 4870x2 so we'll leave that out...lol
Isn't that just a little over dramatic? He can get the older 570 for cheaper and it will have much better performence than the 7858 or 7870 or 660 or 650Ti boost, And yes it may use more power but a decent 500watt psu can handle it just fine however I would recommend a 600watt for big oc headroom.
Yea And I also retract my statement, I compared a non boost 650Ti overclocked against bench reviews on the 570 and it traded blows with it, And about evened out with the 570 just slightly above. So I was wrong sorry