Good gpu, although you can find em cheaper from other brands (I like Sapphire or MSI). Good psu, although I would go with a Seasoinc 520w modular version. That set up will run any new games at decent settings if you are gaming in 1080p or less.
edit: I don't agree with 'planning' for CPU bottlenecking. The CPU may limit your card in some games, but in general, your GPU will limit your eye candy more often than not regardless of the CPU. If your CPU is going to bottleneck in a game, more GPU power may still allow higher AA settings, better textures, and other features without much impact to your frame rate, since these features don't add any extra work to the CPU.
Ok well its worthwhile if you are going to crossfire... Although if you are not running in the sweet spot of your PSU , it just ends up costing you more on the electricity bill than it should as it isn't as efficient at converting to dc, but I suppose a couple hundred W isn't anything to be concerned about, go ahead if you feel you need to..
Its worthwhile noting that not all the TX750's are modular, the one you linked for example isn't, and the ones that are... ie the TX750M is only semi modular
Apparently rosewills have gotten better, but still not what I would choose....I liked the look of the seasonic one djscribbles linked but I think it was only 550w...look to the AX series if you want a decent modular by corsair
the rosewill isnt good? *** im confused. okay, i want the 7850, thats my choice lol, but as for PSU, i need a good, cheap, reliable, 600-700 watt psu. and my bbudget jsut dropped to 340 all in all, the rosewill and xfx 7850 with shipping and tax would be 330. so if you guys can find a good reliable and cheap 600-700 watt psu ill be set.