It's a great study in raw fps output of the 2 in xfire.
xfire has had the luxury of being attached to many great Intel 3/4 series mobos. Something that could/should have been exploited more, and used as a twisted dagger.
Whilst the artificial benching of some markers approaching 4 years of age, it would be with reluctance perhaps, that I would immediately dismiss anything benched prior to 3dmark06. Indeed 3dmark06 is living on extremely thin ice. However, this is ofc dependent on what type of gaming u entertain. Being as there has been a lull in great advancements in gaming imagination, yet alone releases, apart from a fist-full of recycled titles, the number of really-new released games - a user can be forgiven for sticking with a game that could be years old.
Be that as it may, if your on a budget, it could be recognized that you could play such games. If u don't subscribe to buying each game as it's released, u would similarly not be on quite a budget perhaps. 3 or 4 new games and u could be in 4xfire. Similarly, u won't be immediately looking at the 64xQQxAA++ capabilities that ur system would take advantage of. Here then u may not be looking at the 4870 or 260 in the same light - ur after raw fps for ur own personal gaming reasons.
Taking a sideways glance at the PhysX aspect, it would probably be a good run to have taken the driver away from the 260 whilst doing the benching. The effect isn't something that will make a tremendous difference, but using the 260 with a PhysX benefit over cards that don't entertain it, and graphing the results as fps or mark related, means we allow the 260 to do the work the others can't but similarly allow them to be compared, has the 260 doing work unnecessarily. Being as a purchasing decision could be made without PhysX in mind, the card is held back - if u like. A few fps ? Purchasers and forum users use those fps and marks as a religion to condemn each others camps.
As a suggestion to a purchasing user, I couldn't really suggest that they shun the quality aspects, but if the enthusiast themselves is on such a budget and is a massive fan of a single type fps game, it could be a pursuit for them. Still not something I could recommend with a clear head over a single card with some quality aspects. If they were an ATI fan, I would urge a 4870, and equally be happier that they not have so much a chance to be calling me cos the driver aspect has done "something".