While AMD cards (Radeon) and Apple Silicon (M1/M2/M3 chips) work well, NVIDIA cards are generally preferred for After Effects for two specific reasons regarding MFR:
But here is the hard truth most spec sheets won't tell you: While your CPU cores are now working overtime, your GPU’s VRAM has become the silent gatekeeper of your render speed. While AMD cards (Radeon) and Apple Silicon (M1/M2/M3
You can manually control how hard After Effects pushes your hardware. MFR is a symbiotic relationship: One CPU core
Do not buy a 24-core Threadripper if you are pairing it with an 8GB GPU. MFR is a symbiotic relationship: MFR (Now): Eight, twelve, or sixteen CPU cores
One CPU core renders one frame. GPU handles a few blurs and blends. You could almost get away with integrated graphics. MFR (Now): Eight, twelve, or sixteen CPU cores each grab a frame simultaneously. The GPU must hold all those textures, effects buffers, and previews in VRAM simultaneously.
Multi-Frame Rendering allows After Effects to use multiple CPU cores simultaneously to render different frames at once, rather than processing them one by one.
If you have 16 cores (rendering 16 frames at once) but only 8GB of VRAM, you are trying to park 16 cars in an 8-car garage. The system collapses into swapping.
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