Honestly, the NVIDIA GeForce RTX 4080 Super 16GB is the sweet spot. Youre hitting diminishing returns with the 4090 unless youre doing crazy 3D work. Id grab the 4080 Super and put that extra cash toward a Samsung 990 Pro 4TB PCIe 4.0 NVMe SSD or more system RAM. Fast storage for your cache is usually the real secret to smooth scrubbing without proxies anyway.

Tbh I would be a bit cautious about just throwing money at the most expensive card right away. While the NVIDIA GeForce RTX 4090 24GB GDDR6X is definitely a beast, you gotta realize that Sony 10-bit 4:2:2 footage is actually a bit of a nightmare for almost any GPU. Most NVIDIA cards—including the NVIDIA GeForce RTX 4080 Super 16GB GDDR6X—dont hardware accelerate that specific 4:2:2 chroma subsampling natively like an Intel chip with QuickSync does. For a reliable, stable setup that wont overheat your room, I think the 4080 Super is the sweet spot. It has plenty of power for the color grading and effects you mentioned. If you want to stay future-proof, the extra cash saved could go toward faster NVMe storage or more RAM, which are usually the real bottlenecks for scrubbing. Just make sure your system is balanced... sometimes chasing the top spec is just diminishing returns for standard 4K edits.

If youre serious about skipping proxies, the NVIDIA GeForce RTX 4090 24GB GDDR6X is the way to go. That 24GB VRAM buffer is huge compared to the 16GB on the 4080 Super, especially when you start stacking heavy color grades or noise reduction. Honestly, the 4090 handles high-bitrate 4K without breaking a sweat. Its basically the gold standard for Premiere right now for staying future-proof.