- Joined
- Oct 9, 2007
- Messages
- 37,785 (8.50/day)
- Location
- Hyderabad, India
Processor | AMD Ryzen 7 2700X |
---|---|
Motherboard | ASUS ROG Strix B450-E Gaming |
Cooling | AMD Wraith Prism |
Memory | 2x 16GB Corsair Vengeance LPX DDR4-3000 |
Video Card(s) | Palit GeForce RTX 2080 SUPER GameRock |
Storage | Western Digital Black NVMe 512GB |
Display(s) | Samsung U28D590 28-inch 4K UHD |
Case | Corsair Carbide 100R |
Audio Device(s) | Creative Sound Blaster Recon3D PCIe |
Power Supply | Cooler Master MWE Gold 650W |
Mouse | Razer Abyssus |
Keyboard | Microsoft Sidewinder X4 |
Software | Windows 10 Pro |
AMD is working on a new software feature for its Radeon graphics cards, which it calls "Dynamic Frame Rate Control." Revealed informally to the web, by AMD director of PR Chris Hook, who goes by the handle "AMD_Chris" on various forums, Dynamic Frame Rate Control, or DFRC, is a frame-rate limiter, which gives you power savings when you reduce frame-rates. This probably works by reducing clock speeds to achieve the desired frame-rates.
Sounds a lot like V-Sync? Well the way AMD describes it, DFRC is a frame-rate limiter with a slider. Whereas V-Sync makes the GPU spit out frame-rates to match the monitor's refresh-rate. When a game runs, say, 100 FPS, and you enable V-Sync to bring that down to 60 FPS, your GPU is still running at 3D-performance clocks, unless the 3D load is way too low, and the driver decides to change the power state altogether. DFRC probably achieves lower frame-rates by underclocking the GPU, and increasing the clocks, whenever the scene gets more demanding, and the output FPS drops below the target. Hook describes the energy savings with DFRC as "mind blowing." This peaks our curiosity.

View at TechPowerUp Main Site
Sounds a lot like V-Sync? Well the way AMD describes it, DFRC is a frame-rate limiter with a slider. Whereas V-Sync makes the GPU spit out frame-rates to match the monitor's refresh-rate. When a game runs, say, 100 FPS, and you enable V-Sync to bring that down to 60 FPS, your GPU is still running at 3D-performance clocks, unless the 3D load is way too low, and the driver decides to change the power state altogether. DFRC probably achieves lower frame-rates by underclocking the GPU, and increasing the clocks, whenever the scene gets more demanding, and the output FPS drops below the target. Hook describes the energy savings with DFRC as "mind blowing." This peaks our curiosity.

View at TechPowerUp Main Site