GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
On raw speed the GeForce RTX 4090 comes out dramatically faster — about 85% ahead of the GeForce RTX 3080 Ti.
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GeForce RTX 4090 vs GeForce RTX 3080 Ti: In-Depth Breakdown
Performance: GeForce RTX 4090 vs GeForce RTX 3080 Ti
The GeForce RTX 4090 is dramatically faster, around 85% ahead of the GeForce RTX 3080 Ti. That gap is enough to move it up a tier: the GeForce RTX 4090 is comfortable at 4K and high-refresh 1440p, while the GeForce RTX 3080 Ti is better matched to 1440p. The GeForce RTX 4090 packs 16,384 CUDA cores versus 10,240 on the GeForce RTX 3080 Ti.
Power & Efficiency
On power, the GeForce RTX 3080 Ti is the gentler choice at 350W versus 450W. The GeForce RTX 4090 is more efficient per watt because it's faster, but its higher 450W draw means more heat and a bigger PSU. Its more modern Ada Lovelace architecture on a TSMC 4N process is part of why it does more with each watt.
VRAM & Future-Proofing
The GeForce RTX 4090 carries 24GB versus 12GB on the GeForce RTX 3080 Ti. The extra 12GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The GeForce RTX 4090's memory is also faster — 1,008 GB/s versus 912 GB/s — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: GeForce RTX 3080 Ti or GeForce RTX 4090?
The GeForce RTX 4090 is the faster card by about 85%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.