Resizable BAR aka SAM disabled for Radeon RX 6800/6900 XT. I will do a dedicated comparison once the feature will be available on RTX 3000 GPU's later this month. System Spec: CPU: AMD Ryzen 9 5900X @ Stock Motherboard: ASUS TUF GAMING X570-PLUS RAM: 4x8GB G.Skill Trident Z 3466MHz CL16 @ 3800 MHz CL16-17-16-34-324 GPU: Sapphire Radeon RX 6800 XT NITRO+ OC - Stock performance Bios GPU: MSI GeForce RTX 3080 SUPRIM X - Stock performance bios GPU: Powercolor Radeon RX 6900 XT Red Devil - Stock performance bios GPU: ASUS GeForce RTX 3090 Strix OC - Stock performance bios CPU Cooler: Corsair iCUE H150i PRO XT RGB Corsair HX1000 - 1000W Platinum AMD Driver: Adrenalin 2020 Edition 21.2.1 Nvidia Driver: 461.40 Hardware Accelerated GPU Scheduling enabled for all NVIDIA GPU Recorded using capture card and second PC, zero performance loss. 10 Games 1080p 1440p 4K: 0:00 - Hitman 3 | 1080p 0:42 - Hitman 3 | 1440p 1:22 - Hitman 3 | 4k 2:03 - Cyberpunk 2077 | 1080p 2:43 - Cyberpunk 2077 | 1440p 3:23 - Cyberpunk 2077 | 4k 4:04 - Warzone | 1080p 4:45 - Warzone | 1440p 5:25 - Warzone | 4k 6:06 - Red Dead Redemption 2 | 1080p 6:46 - Red Dead Redemption 2 | 1440p 7:27 - Red Dead Redemption 2 | 4k 8:07 - Watch Dogs Legion | 1080p 8:47 - Watch Dogs Legion | 1440p 9:28 - Watch Dogs Legion | 4k 10:11 - Assassin's Creed Valhalla | 1080p 10:51 - Assassin's Creed Valhalla | 1440p 11:32 - Assassin's Creed Valhalla | 4k 12:12 - Doom Eternal | 1080p 12:52 - Doom Eternal | 1440p 13:33 - Doom Eternal | 4k 14:13 - DIRT 5 | 1080p 14:54 - DIRT 5 | 1440p 15:34 - DIRT 5 | 4k 16:15 - Control | 1080p 16:55 - Control | 1440p 17:35 - Control | 4k 18:16 - Horizon Zero Dawn | 1080p 18:56 - Horizon Zero Dawn | 1440p 19:36 - Horizon Zero Dawn | 4k