Mid Range GPU Performance w/ HDR Enabled
Next we looked at mainstream GPU performance, targeting graphics cards that were priced at or below $300; for reference we've tossed in a few pairs of cards running in SLI or CrossFire.
Not only have we reduced the resolution, but we've significantly reduced the image quality settings here. The result is a good balance between image quality and performance, however we would much rather play with our high quality settings as Oblivion can be one very impressive looking game with the details cranked up.

The white lines within the bars indicate minimum frame rate
The king of the mid range is actually the Radeon X1800 XT offering pretty much the best performance you can get for under $300, even outperforming the GeForce 7900 GT. If you already have a Radeon X1600 XT and happen to own a CrossFire capable motherboard, then simply picking up one more X1600 XT will do wonders for your performance. Remember that the X1600 series can run in CrossFire mode without any external dongle, so all you need are two X1600 XTs and you'll be looking at fairly good performance. While we wouldn't recommend purchasing two X1600 XTs (you're far better off with a single 7900 GT), if you already have one it's the cheapest way to get a good performance boost in Oblivion.
The GeForce 7600 GT proves to be a good middle of the road performer here, offering good performance while being priced at under $200.
The GeForce 6600 GT is unfortunately overwhelmed by our medium quality settings, and unfortunately has now become a low end contender as far as Oblivion is concerned. Running a pair of 6600GTs in SLI improves performance a bit but still no where near what a pair of X1600 XTs will do in CrossFire mode.

The white lines within the bars indicate minimum frame rate
Once again we see that there's no significant performance difference between the GPUs at the top of the charts, but performance really begins to drop off after the 7600 GT.

The white lines within the bars indicate minimum frame rate
The Medium Quality Dungeon benchmark is very friendly to the NVIDIA cards here, with the first ATI showing being the X1800 GTO half way down the graph. The GeForce 7900 GT and Radeon X1800 XT continue to be the best performers here, but the 7600 GT isn't too far behind.
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