Wisecracker :
In a gaming build,
it's your video card.
In games that favor nVidia, the GTX 960 and R9 280X trade blows. Overall, the R9 280X is 10-40% faster than the GTX 960
The
MSI GTX 960 at Guru3D
In a gaming build, a graphics card only influences graphics. The CPU still has to process the information.
Also, do not buy an XFX, PowerColor, or Diamond card. If you can buy something other than Sapphire, you should, but if not, then Sapphire is alright. PowerColor has been getting better, but they're still not up to par with Asus, MSI, or Gigabyte. PNY makes some good cards occasionally, but not consistently. XFX is notorious for using cheap components, as well as Diamond and PowerColor. If it looks like cheap plastic, don't buy it. Generally, the more expensive looking the card, the better it is. This isn't always the case, but it's a good base rule to go by. The R9 280X is a good processor, but don't get it from XFX. I suggest Gigabyte. They make really durable stuff that may not be the fanciest, but it works really well. Asus does really well, but they're usually more expensive. MSI usually straddles the line between durability and looks. They're kind of the middle when compared to Gigabyte and Asus.