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 noticeably faster — about 10% ahead of the GeForce RTX 5080.
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GeForce RTX 4090 vs GeForce RTX 5080: In-Depth Breakdown
Performance: GeForce RTX 4090 vs GeForce RTX 5080
The GeForce RTX 4090 is noticeably faster, around 10% ahead of the GeForce RTX 5080. Both cards sit in the same broad class, well suited to 4K and high-refresh 1440p. The GeForce RTX 4090 packs 16,384 CUDA cores versus 10,752 on the GeForce RTX 5080.
Power & Efficiency
At 360W against 450W, the GeForce RTX 5080 is both the lower-power and the more efficient card, making it the easier build to cool and power. Its more modern Blackwell 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 16GB on the GeForce RTX 5080. The extra 8GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers.
Generation & Longevity
The GeForce RTX 5080 is roughly 3 years newer than the GeForce RTX 4090 (Blackwell vs Ada Lovelace), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: GeForce RTX 4090 or GeForce RTX 5080?
The GeForce RTX 4090 is the faster card by about 10%. 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.