ENGINEERED FOR PERFORMANCE: We all know that the GPU is the hottest running component in any personal computer, and properly cooling it is Bykski's #1 priority. The water-cooling block absorbs and exchanges heat quickly, enabling the coolest temps and highest performance vs. any air-cooled graphic card PERIOD. SIMPLE INSTALL: Full coverage GPU block with straightforward installation allowing you to get up and running quickly. The block is designed to be compatible with ASUS ROG Strix GeForce RTX 4090, ASUS TUF Gaming GeForce RTX 4090, ASUS ROG MATRIX RTX 4090 HACK, ASUS ROG Strix RTX 4090 O24G Gaming, ASUS ROG Strix GeForce RTX 4090D 24G Gaming and ASUS ROG Strix GeForce 4090 O24G White. Use with other video cards is not recommended. HIGH-QUALITY DESIGN: Full acrylic (PMMA) and Ultra-high purity purple copper plate, which is the highest quality in these characteristics next to silver. Includes GPU block with backplate and all the mounting hardware, thermal paste/pads, and installed A