Attached files are heaven frames rendered with our D3D11 simulator, with and without Pixel Merge Unit.
Level of tessellation used is reflected in the name of the file.
Images with names ending in 0000.png are the rendered without the PMU and are the reference images.
Images with names ending in XXXX.png are rendered with the PMU having XXXX entries, e.g. 
heaven_extreme.0512.png is rendered with PMU having 512 entries.