Pay no attention to naysayers, Passmark/Benchmark is plenty accurate and will provide you with fairly accurate comparisons between products. If the comparison numbers are really close together, then that's the point in which you should go in and do your own comprehensive brown townysis, this is a service that is best used to narrow down your product search.
Except
no, because passmark is not very accurate. For the sake of utmost transparency, I'll state first that we're only talking about gaming. If you buy a gaming video card for the purpose of not gaming, you are doing it wrong. Passmark is a synthetic benchmark, which means it stresses different configurations of hardware architectures in a way that it sees fit, then assigns each piece of hardware an arbitrary score. Believe it or not, the best way to determine which
gaming video card is best for
video gaming, is by benchmarking with
video games and not synthetic benchmarks.
http://www.tomshardware.com/reviews/radeon-r9-295x2-review-benchmark-performance,3799-4.htmlHere are a bunch of video game benchmarks between the 295X2 and
TWO 780 ti's. If you look through, you'll see that the pair of 780ti's narrowly beats the 295X2 at 2560x1440 a little over half of the time, and then loses to the 295X2 in almost all of the 3840x2160p by anywhere from a narrow margin to a 10fps difference.
That's TWO 780ti's which trades blows with a single 295X2. In case you have delusions that a single 780ti can do the same amount of work as two, here's a separate article with more benchmark numbers for the 780ti on its own:
http://www.tomshardware.com/reviews/geforce-gtx-780-ti-review-benchmarks,3663-3.htmlIf the comparison numbers are really close together, then that's the point in which you should go in and do your own comprehensive brown townysis, this is a service that is best used to narrow down your product search.
Well that's the loving problem, the passmark charts show a single 780ti vastly beating a 295X2. That's not close. Anyone who reads those charts and doesn't know better will think that a single 780ti is vastly better than a 295X2 in raw performance, on account that it wins by over a thousand points
In summary:
1) you are wrong
2) passmark does not paint an accurate picture of gaming video card benchmarks