Will my laptop play black op's?

Easily. You have a great video card, and I would say that a 1GB VRAM card would be overkill, even. Your hard drive size does not matter at all. 4 GB RAM is great, even though video games really don't rely on RAM as much as it does rely on processing speed, which brings me to the last point. With a dual core i3 processor, I believe that you can run this game with relative ease. However, a quad core processor computer with similar specs would blow your laptop out of the sky.