GTX 480 vs Unlocked 6950

Stupid question - I have a Sapphire Radeon 6950 2gb w/unlocked shaders. I don't play many games, mostly TF2, CS:S, and CS:GO so it's really overkill. I do have all the settings maxed out and I play at 2560x1440, but even so I rarely dip below 100 fps. I just purchased a GTX 480 for its CUDA cores and didn't realize exactly what I bought. My original plan was to run it side-by-side with the 6950, but now I'm wondering if I should just remove the 6950 and run the GTX 480 as my primary card. Thoughts?

Try it out. If it's just as good, use the GTX 480 and sell the 6950 (or make a new home for it...)

6950 unlocked to a 6970 is about equal, from what I've seen, to a GTX 480. Where you may run into problems is the 1.5 Vram vs the 2 Gb on the 6950.