Video Card upgrade or Crossfire?

[PootieMP]

CPU - Intel Core i5-3570k 3.40 GHz (4cpus)
Motherboard - MSI MS-7752
RAM - 2 x 4 GB Kingston HyperX
Graphics Card - XFX Radeon HD 1gb 7770
Power Supply - Ultra LSP 750 Watt
OS - Windows 8.1

Thats what I got, I can supply the dxdiag if need be. I want to run CoD Ghost, but this graphics card doesn't really cut it. Wondering if crossfiring (get a 2nd card, they are on newegg for $130) would be enough or just get a new graphics card (and fork over around $200-$300)? If crossfire would work would the power supply be enough as well? I'm pretty happy with everything else with my rig, just the video card leaves something to be desired with the new games that are coming out (I want to be able to play Metro 2033 without lagging in a gun fight as well).

[Deleted]

I wouldn't recommend going with crossfire on such a low end card and I'm certain most people will agree. You are better off upgrading into the new series.

Not sure who the OEM of that PSU is though. If it's properly rated for 750W though with proper connectors you should have no issues running even a high end CF setup. The R9 280X or the GTX 770 are both great cards to upgrade to.