Tiger Direct is currently having a sale on the MSI GeForce GT 520 N520GT-MD1GD3/LP Video Card - 1GB, GDDR3, PCI-Express 2.0 (x16), 1x Dual-Link DVI, 1x HDMI, 1x VGA, DirectX 11, Single-Slot Low Profile graphics card for a measly $20. I was thinking of upgrading from my current 512 MB GeForce 8600GT. Would it be worth it?