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AMD’s RDNA4 GPU architecture
RDNA4 is AMD’s latest graphics-focused architecture, and fills out their RX 9000 line of discrete GPUs.
Using dedicated hardware at the display engine instead of the GPU’s programmable shaders means that the sharpening filter won’t impact performance and can be carried out with better power efficiency. Moving the mouse causes the card to ramp up memory clocks and consume more power, hinting that RDNA4 is lowering refresh rates when screen contents don’t change. But years later, Infinity Fabric components provided an elegant way to implement a large last level cache, or multi-socket coherent systems with gigantic iGPUs (like MI300A).
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