These three graphics cards, The best one?

Solution
No, it might be closer to the GT 750M than the 730M. The GT 730M would be more like the GT 820M.

A trick I use to compare cross gen is this, +90/-90 a card to see the next or previous gen. Example would be like a GT 760M might perform close to a GT 850M, or a GT 760M + 90 would be close to a GT 850M. While this isn't SUPER accurate or exact it is close. (The GTX 970 performs really close to a GTX 780)


is a 100 usd more for the gt 840 one worth it?
8670m: 540 USD
R7 M260: 600 USD
GT 840M: 670 USD

all have 8 gb ram and are 15.3 inch.
 
Depends on the other specs of the laptop. Its not like the video card in it is alone worth the price, but there could be things on the laptop that could make it go that way.
 


Im aware of that. They all got similiar processors, and i really just want to know if it's worth spending a little extra for the r7 m260 or 840m
 
What do you want to play? If all you're playing is League of Legends on Low/Med, Minecraft, cheap indie games off steam then you can can go with either. If you wanna play slightly higher spec'd games like Starcraft2, Diablo 3 (will sputter when more than 20 mobs are on screen), Civ 4, etc etc then i would say you MUST get the GT 840M then.
 


Thank you for your answers. Will problably go with the gt 840m. Would it be equivalent to a gt 730?
 
No, it might be closer to the GT 750M than the 730M. The GT 730M would be more like the GT 820M.

A trick I use to compare cross gen is this, +90/-90 a card to see the next or previous gen. Example would be like a GT 760M might perform close to a GT 850M, or a GT 760M + 90 would be close to a GT 850M. While this isn't SUPER accurate or exact it is close. (The GTX 970 performs really close to a GTX 780)
 
Solution