Nvidia support most features level of DX11.1 on software ( API ), not all, as some require hardwares features level.. but this dont mean Dice have decided to use the features who require a support on hardware.. ( where AMD support them all on hardware ). This said, we dont know yet how it can impact the perormance. http://msdn.microsoft.com/en-us/library/windows/desktop/ff476876%28v=vs.85%29.aspx

BF4 is a Gaming Evolved title so i wouldn't be surprised if they used DX11.1 hardware features as well.

BF4 is a Gaming Evolved title so i wouldn't be surprised if they used DX11.1 hardware features as well.

Me: - Remember directx 10.1 - Don´t give a crap.

(But MS could have easily ported the full 11.1 functionality to Windows 7 too.)

"GK104 and GK110 supports DirectX 11.1 with hardware feature level 11_0, including all optional features. This includes a number of features useful for game developers such as: Partial constant buffer updates Logic operations in the Output Merger 16bpp rendering UAV-only rendering Partial clears Large constant buffers We did not enable four non-gaming features in Hardware in Kepler (for 11_1): Target-Independent Rasterization (2D rendering only) 16xMSAA Rasterization (2D rendering only) Orthogonal Line Rendering Mode UAV in non-pixel-shader stages So basically, we do support 11.1 features with 11_0 feature level through the DirectX 11.1 API. We do not support feature level 11_1. This is a bit confusing, due to Microsoft naming. So we do support 11.1 from a feature level for gaming related features." Furthermore, we were directed towards MSDN library page, where the different features were listed. You can check the "Direct3D Feature Levels (Windows)" here. Based on the Heise.de report and the answer from Nvidia, we asked our friends among AAA game developers to get clarification on how are they making that distinction. Lead engine developer for a AAA franchise that is published on PC, Xbox 360 and PlayStation 3, and is at work with next-gen engine that only works on DirectX 11-capable PC's, Xbox Next and PlayStation 4 told us the following: "DirectX 11.1 support is so-called blanket support and we can expose almost all the functions utilizing dx11_0 and dx11_1 hardware. We do not make any distinction between the two, since there are differences in hardware capabilities" Second AAA game developer pretty much repeated the same story as the previous email comment: "DirectX 11.1 is an incremental upgrade, and we support all the capabilities we need, regardless of dx11_0 or dx11_1 hardware. Remember DirectX 10 and different versions? They were also covered via software features. 90% of differences between 11.0 and 11.1 are software anyways."