That first link is broken. Took some cut and paste to find out its the GT220. At 1920x1080, it will be severely lacking in performance. Lowest I'd suggest is the 4850. This one is $85 with the promo code if you order it today.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102824&cm_re=4850-_-14-102-824-_-Product
Otherwise, that 5770 linked is $133 amir.
For the CPUs, you have the 555 linked twice. I'm guessing you're asking about the 630 v 555be? Which is better really depends on what you're using your computer for. Here's the stock speed head to head:
http://www.anandtech.com/bench/default.aspx?p=105&p2=120&c=1
They both have big wins. The 555 in all the games except Dragon Age Origins and the 630 in anything that uses the extra cores. That's a decision only you can make. If you OC both, the 630 will close the gap on a lot of the 555 wins and extend its lead on its wins. Personally, I'd rather have the extra cores. I have a dual core and it does all the general stuff I need it to, but it doesn't stop me from wanting a quad, even if I can't get it to the same OC speed.