[CiNcH]

I did a small perforance comparison of different renderers.

Graphics: Intel HD 4000 (Ivy Bridge) @ 1080p
Content: Discovery HD (H.264 1080i)


KODI 15.0 Isengard RC2 (DirectX 11)

Render Method: DXVA
Allow hardware acceleration - DXVA2: yes
Use fullscreen window: no
Deinterlace method: Auto select
Video scaling method: DXVA

GPU-Z: 23% load @ 350-600 MHz, 57°C, 1.9W


KODI 14.2 Helix (DirectX 9)

Render Method: DXVA-HD
Allow hardware acceleration - DXVA2: yes
Use fullscreen window: no
Deinterlace method: DXVA Best
Video scaling method: DXVA

GPU-Z: 18% load @ 350-600 MHz, 55°C, 1.2W


DVBViewer w. Standard EVR (LAV Video w. dxva2n)

GPU-Z: 31% load @ 350-600 MHz, 57°C, 2.7W


Quality wise they all look pretty equal as they all use the video hardware capabilities of the Intel QuickSync engine.
Both, the DX9 and the DX11 renderers in KODI are pretty efficient. However the DX11 renderer seems to take more resources.