difference between PVT71AYDL3 vs PVT71AYDF3? I'm going to buy myslef a GeForce 7950 GT Video Card (512MB, AGP 8X, Dual DVI), and I found 2 different kind of models. PVT71AYDL3 vs PVT71AYDF3They are both the same specs and everything, but does the model number makes a difference between the 2 cards?Here are the two 7950GTs I'm looking at~http://www.buy.com/prod/XFX_GeForce_7950...87762.html