cheap PCIex16 graphics card options plz

trying to juice a few more years out of my computer, here's what is in the guts:




Was having major heat issues, installed a new cooling unit and a new power supply and I'm back on track but in the process my video card stopped working. I had an ASUS EAH6670 which was absolutely adequate for my needs.

Would like something cheap to replace it as I am not using onboard graphics and can't even play the simplest of games with it.

Thanks
AC

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amd r7 series is a good place for best bang for your buck