[citation][nom]RazberyBandit[/nom]Umm... a single 5750 as an alternative to dual-4850's? That's reasonable, I suppose. Seeing as the 5750 is somewhat of a 40nm version of the 4850, it makes some sense. Sure, it's missing a few SPs and TUs, but you get an upgrade to DDR5 and all those 5000-series features - Dolby Audio, Eyefinity, and DirectX 11, and significant Power Savings. (Unfortunately, the 5700-series cards were downgraded to a 128-bit memory interface.) You could always add a 2nd one when you could afford it, and would likely see similar performance to this machine. Though, a single 5770 would be the better way to go if you wanted to maximize the performance potential of a Crossfire setup down the road.[/citation]
It's been a while since I've researched a new system so I'm a little behind on everything. $200 was spent on the dual card setup in this rig. So I'd say, aim for the best at or below that price. Looking at Newegg and the GPU charts show me that the 5770 might be about right. It's faster than a single 4850 or 5750. And if I shop around I might be able to find it in the $160-$170 range.
After looking at the ultimate system review, I think the goals for each of the systems is fairly the same but for different reasons. For the ultimate system, you're on the leading edge of the technology curve and hoping to stay there. For the budget system, you're a little on the backside hoping to keep up with minor upgrades each year($100-$200 at the most). You know that when you build your system that, in a year or so, there are going to be new games that are going to make your system drag some. So you try to plan for it. And hope technology doesn't make any big changes in the meantime.