Difference between 2 Graphics cards



You won't see much difference really...just frames but it won't effect your performance. Just get the 650Ti Boost
 
Sort of. The first number is just the generation number. So a 620 is newer then the 450. It's the second number that gives you an idea of the performance. Or is supposed to. That "20" means its a low end card meant for basic use. That older 450 will game a lot better. There is no clear cut range. But the higher those second numbers the faster the gaming. For the most part.
 


+1

Not even comparing the right card: OP's question was about the 650Ti BOOST, not the much cheaper and weaker 650Ti

That site generally sucks - what matters is gaming performance. ~10% difference from the 650Ti Boost to the 660.