Caporegime
- Joined
- 18 Oct 2002
- Posts
- 33,188
My thoughts too, I don't know what percentage usage AMD owners are getting but my 780 is well under 50%, also got a better score when disabled SLI, it does appear this bench is geared up for mantle while DX is crippled.
Having said that, I hope AMD / Mantle users are getting nearer to NVidia performance, as for me I'll stick with NVidia / DX for now.
It's not crippled at all, this is a game that was in development for a long time under DX only. It was 100% being worked on for DX till september and a single person has been working to add the Mantle code since then, Mantle is unoptimised and DX is optimised.
The issue is unit count/draw calls, DX simply can't scale beyond a certain level so 99% of games simply design to this limit and don't go past it or they'd suffer the horrible performance you're getting. This is the first engine really designed to be able to scale up to that level.
If the benchmark ran say a 500 unit count maximum, Mantle would offer a lower performance boost and Nvidia gpu usage would be higher as the DX thread would be significantly, massively reduced.
The gap in performance will likely grow as Mantle is properly optimised for, xfire in dx vs Mantle will be an even bigger bloodbath.
Game design is currently held back by dx overhead, this demo is merely showing, remove the API overhead... this is the performance you can get, these are the games we can make without the overhead in place.