Check out my $850 build here:http://www.squidoo.com/electronicandmore
Although you don't get an SSD that's not what's most important for a build. You can add the SSD if you'd like but at this budget, the money is better towards a better GPU.
The 7850 in my build can run games much more smoothly. Also, uses less power, runs cooler and also after overclocks can perform at the level of a GTX 580. The best part about the overclocking on the 7850, the 7850 can overclock easily by just downloading the AMD drivers and just sliding the sliders in the drivers menu in the OS.
But I don't include the heatsink, wifi and dvd burner so that's something. A bonus to my build, you'll be able to Crossfire with the 7850.