Fastest Sub 50 dollar graphics card?

Looking to build a small overclocking PC to screw around with. I need a graphics card under 50 dollars. These are my parts:
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($64.98 @ NCIX US)
Motherboard: ASRock H97 Anniversary ATX LGA1150 Motherboard ($72.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($55.99 @ Newegg)
Storage: Western Digital Caviar Blue 320GB 3.5" 7200RPM Internal Hard Drive ($26.00 @ Amazon)
Case: NZXT Source 210 Window ATX Mid Tower Case ($30.98 @ Newegg)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($46.99 @ NCIX US)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.75 @ OutletPC)
Total: $316.68
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-07-25 10:57 EDT-0400
 


I use to have a pair of 660s but I do not need anything that fast. The H97 and B series mobos can overclock a Pentium nicely.



I do like the R5 230. I will consider it.



I am aware. I just want something besides integrated graphics.