Manli Graphics Radeon HD 4890 Review: The Manli Radeon HD 4890 offers strong DirectX 9 performance; its performance in DirectX 10 games was adequate, if inconsistent - PC Components - Graphic Cards - PC World Australia
Amazon.com: SAPLOS GTX 1050 Ti Graphics Card, 4GB, 128 Bit, GDDR5, DisplayPort/HDMI/DVI, Computer GPU, Video Cards for PC Gaming, Dual Fans, PCI Express x16 3.0, DirectX 12, Support 8K Displays : Electronics
DirectX 9 vs. DirectX 10 - Real World DirectX 10 Performance: It Ain't Pretty
DirectX 9.0c - Download
iRacing - DirectX 9 vs DirectX 11 - Graphics and Performance Comparison - YouTube