y did u return the dell? because it had the 5xx processor the new 6xx ones? y dont u just order a new dell with the new processor? I would not buy from hp right now until they come up with better, newer models. I would also not get sony until they get the 6xx processors. I dont think that ure a gamer so not looking for any gaming pc manufacturers.
I would not suggest getting gateway since u cannot customize specs, ugly looking , and monitors suks. i have an emachine t5026 which is made by gateway and it is loaded with generic hardware.
But if u really want gateway, iwould suggest the 9310x cuz it would probably meet all ur needs perfectly. If ure a gamer or need more performance and hd space then get the 9310xl which upgrades the gfx card from 6600gt to 6800u and adds sound blaster audigy 2 sound card.
I just returned my 8400 dell system ,a nd just got my full refund from them . i'm thinking about buying a gateway pc the 9310S series which has the new intel 600 chip , my question is , is gatway still makes good pc's , and if any one tried thier 9310s ??

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