the dell is more expensive but significantly faster. it has a quad-core with hyperthreading (4 CPUs, 8 threads); the gateway has a dual-core with hyperthreading (2 CPUs, 4 threads). the hd 5770 is also about twice as fast as the gt 220.
I've been researching for the past week looking for a new desktop that would be right for me. I'm currently just stuck with a nearly 4 year old laptop with only 20 gb of space left so it's time for an upgrade. Anyway, I looked into everything from building my own (which I have never done and would be too worried I'd screw something up) to buying one in a Best Buy or something. I narrowed it down to either the Dell Studio XPS or the Gateway DX4831-03 (when it comes out). Here are the specs for each...
Dell XPS
http://www.bestbuy.com/site/Dell+-+Studio+XPS+Desktop+with+Intel%26%23174%3B+Core%26%23153%3B+i7+Processor/9697488.p?id=1218153426530&skuId=9697488
Intel

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