what is the cheapest/best graphics card can I get that will work with my system and out perform xbox one/ps4?

[aneville]

my current setup:

• 
  * GIGABYTE GA-890GPA-UD3H AM3 AMD 890GX 6 x SATA 6Gb/s USB 3.0 HDMI ATX AMD Motherboard motherboard spec
  * AMD Phenom II X6 1090T Black Edition Thuban 6-Core 3.2GHz Socket AM3 125W HDT90ZFBGRBOX Desktop Processor
  * G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory Model F3-12800CL9D-
  * CORSAIR TX Series CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready
  * Western Digital Black WD6402AAEX 640GB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
  * ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner
  * COOLER MASTER Storm Scout SGC-2000-KKN1-GP Black Steel / Plastic ATX Mid Tower Computer Case

I was planning on increasing the RAM to 12GB with THIS and I will be getting a solid state drive, most likely THIS. I would like to also get a graphics card that will out perform the latest generation of gaming consoles but not break the bank. I was hoping to spend no more than $200-$300ish on the graphics card, but exceptions could be made if necessary. I would like to use the PC for a higher quality gaming experience. I also use the computer for a lot of audio processing/design, but the point of this post is for gaming purposes.

MY QUESTION TO YOU
What graphics card would work with my current set up that would out perform latest gen consoles? Also, the motherboard has a built in graphics card and I believe it has crossfireX So if my understanding is correct, I should get a graphics card with crossfireX and then I would be able to utilize both the onboard graphics and the pci express graphics at the same time??? Thank You for any help/input.

 

[Andrei123]

750 Ti is a great card for $150-ish , 960 for $200-ish
As for the CrossfireX I'm pretty sure they won't work together if you buy an amd GPU , because they might not be the same card.

 

[shonenrek]

CrossfireX is an AMD solution, so if you want to take advantage of it you'll want an AMD graphics card. I would recomend, based on what I've read from others, a 4GB 270x is the way to go for you (such as this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202049).