Nvidia 7900 vs. ATI X1900 HDR

I have read that the nvidia 7900 gtx has HDR. I have also read that it doesnt and that only ATI X1900XTX has it. Can anyone help me sort out this mess?

So which is the better buy? Especially for the future. I'm leaning toward ATI right now, but it seems to have slower frame rates in games. Even though the rates are up way past being visible, I just wonder about future games. If they're slower now, will they continue that trend on the way?

the 1900 is not slower now, just in older games. Games like doom3 are still the "old" style of texture-heavy implementation, while games like oblivion are shader heavy (the "new" style)

the 1900 architecture is very shader wheighted, and so screams on oblivion in the outdoor segments. (indoor parts favor Nv but they are more texture rich) The xbox 360 is also shader heavy (same architecture as 1900, both are ati) and it looks like devs are going to go with more shaders, as they are making more stuff for "next-gen" hardware like the 360. If this continues, the 1900 (and to lesser extent the 1800) will only get better as more games hit that type of arch and ati continues to optimise the drivers.

The perf increase should be similar to the 9700pro as it took many revs to see the performance continually step up to newer games on that chip while games kept comming out that hit its architecture. Nv was playing catch-up there, and they may be doing the same here too.

I have been wrong before though.

Battlefield2... that's a joke; the game does not use Shader Model 3.0.