Cards for XP gaming.I have narrowed it down to these two cards for my XP Gaming PC.They are as much as i want to pay, that is 75 pounds. GTX 660 TI or HD7870 what do people think of *Game Debate*?.It says the GTX 660TI is 10% better than the HD7870.But when i look on youtube there very close with the HD7870 edging ahead by a small margin in the games it is showing.
. And what do people think of *Bottleneck calculator*i found it very helpfall.That is how i made the choice of those to cards in my price range. 
