Yes, I did one a while ago. If you dig very hard through the forums you'll find it. Can't now remember what the answer was though.
Benchmark is a very curious thing. Upgrading your CPU and motherboard can give you a lower benchmark. Clicking the autodetect button repeatedly cycles you through several different values.
To give us a context, I played Resistance with a benchmark of about 750. That was the absolute limit: on occasion I had to pause, increase viewdistance to have a look around, then reduce it again before moving on. I felt like a submarine captain.
My next benchmark was 5660. Then, with an alledgedly slightly better setup, it went down to 3000.
Un-Impossible Mission, which is pretty heavy, is just playable and no more at 1500.
IIRC (and I may not) we sort of established that about 2500 was a good level for benchmark-dependant eyecandy.
I would think that that a top of the range setup now would be about 7000.