Who on Earth said anything about DX multithreaded submission? I was talking about basic driver multithreaded enhancements, something which NVidia has been doing for almost 15 years with their drivers when the first dual core processors became available:
NVidia drivers multithreaded since 2005
But if DX11 multithreading is broken, how on Earth did NVidia manage to squeeze out a 50% gain (in CPU limited situations) over AMD in Civilization 5?
And why is Slightly Mad Studios, the developers of Project CARS using the technology in their game?
In fact, in this comparison posted video posted on youtube last year pitting a GTX 660 vs a HD 7850, the GTX 660 has a 55% lead over the AMD card, courtesy of DX11 multithreading:
GTX 660 vs HD 7850
So apparently, DX11 multithreading does work, at least on NVidia hardware.
That's just a bunch of speculation. The PClabs.pl review shows that AMD's drivers have poor scaling on multicore processors.
I'll take that over some random internet post on the net any day.
Mantle is unquestionably more efficient than Direct3D, but it's not huge unless we're comparing AMD to AMD.
The 7850K plus 780 Ti pairing was only 18% slower than the 7850K plus R290x pairing running on Mantle.
But when you compare the 7850K plus R290x pairing running on DX to Mantle, Mantle gives you almost 60% more performance..
The problem basically, is that AMD's DX drivers suck ass..
Where are you getting "NV seems CPU limited up to around a 4.5ghz 4770K in multiplayer."
I posted some benchmarks many pages back comparing my 4.5ghz 3930K vs stock clocks at the South China Sea mission in the SP campaign, the same area AMD used to showcase their Mantle improvements as it's very CPU intensive.
Overclocking the CPU surprisingly had little performance gain, around 10 FPS or so, which considering I was already in triple digit frame rates, wasn't much for a 1ghz overclock.
So on my setup, I wasn't really CPU limited at all; at least not appreciably so. Frostbite 3 engine can scale up to 8 threads, so as long as you have a strong multithreaded processor, you're unlikely to be CPU limited to the point where it affects gameplay.
You post questionable benchmarks from God knows how many years ago, and expect them to have any sort of impact today?
DX11 multithreading performance is wholly contingent on the drivers. From the time when NVidia first introduced DX11 multithreading capable drivers with the 270xx, to the very recent 334.67 drivers, the performance has undoubtedly increased.
So that's not really a good point.