So i suppose only a 9k card will be suited for that application. Why not just recommend the GTX Titan then ( even though we all know why and it's the exact same reasoning as I gave )?
He came here asking for input and I gave him mine... if he doesn't want to take the advice, that's his prerogative. No where did i state that my word is god.
Eh, you have a point. I don't think anyone would recommend a Titan for gaming anyway, no game needs double precision math.
My apologies if my post came across as brash.
How much of a difference does mantle make on AMD cards?
There's a benefit to the high-end rigs under Mantle, although people aren't too excited about it for now. If you run a single card in a high-end configuration, Mantle helps reduce frame time variances resulting in smoother gameplay, as well as reduce the severity of hiccups because your hardware is being taxed in a more efficient manner, rather than brute-forcing a job. Although this benefit is also seen on high-end rigs, most sites have been looking at results with weaker processors because the improvements are very apparent.
That's a multiplayer benchmark by PC Perspective run of Battlefield 4 in Paracel Storm, using a AMD A10-7850K along with a Radeon R9 290X. The blue line represents GPU time in milliseconds which is the time it takes for the GPU to render one frame. Overall the line is much thinner and more collected than the Direct3D results, which ends up as higher average framerates over time because the GPU isn't being held back by the processor's performance.
And because Mantle directly affects processor performance, at the weaker end of the scale the CPU is allowed to work much harder with more multi-threading action going on, pushing up average framerates and improving the experience overall. On a high-end system the results won't be as pronounced, but they'll definitely be there in terms of smoother gameplay and will help when you're playing at higher resolutions with all the eye candy turned on. Nvidia's doing something similar with their drivers, but they aren't capable of producing the same benefits without their own API or DirectX 12.
If you run two GPUs at 2560 x 1440 or higher, Mantle also helps out with frame metering and frame variance. Two R9 290X cards in Crossfire using DirectX may have an average frame rate higher than the same pair under Mantle, but the Mantle tests by PC Perspective show obscenely predictable results.