XFX are included Tom CLancy’s H.A.W.X. game with its HD 4890 cards which is one of the biggest titles supporting DirectX 10.1.
Sanjin was kind enough to include this game in many benchmarks he run and he found out that XFX 4890 with DirectX 10.1 enabled scores a lot of frames than without it.
At 2560×1600, without DirectX 10.1 the card scores 45 FPS. With DirectX 10.1 the same card at the same resolution scores 51FPS.
ATI 4890 scores up to 15% better with DX10.1