I would seriously, seriously consider purchasing a 5800 series vid card instead of that 5770. It was a mistake I also made myself. With a 1055 system you have so much potential in that processor, I forsee you being seriously bottlenecked by that card. I'd highly recommend upgrading that to a 5830. They're a bit more expensive but appear to be well worth the money. Especially if you ever plan on running graphics intensive games like Crysis.
Edit: Need to read replies before I reply myself instead of just skimming. MuffinMan already covered it.
Edit: Need to read replies before I reply myself instead of just skimming. MuffinMan already covered it.