GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
On raw speed the GeForce RTX 4080 SUPER comes out dramatically faster — about 44% ahead of the GeForce RTX 3090. But the GeForce RTX 3090 is the better value, undercutting it by $781 GBP for the performance you get.
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GeForce RTX 4080 SUPER vs GeForce RTX 3090: In-Depth Breakdown
Performance: GeForce RTX 4080 SUPER vs GeForce RTX 3090
The GeForce RTX 4080 SUPER is dramatically faster, around 44% ahead of the GeForce RTX 3090. That gap is enough to move it up a tier: the GeForce RTX 4080 SUPER is comfortable at 4K with upscaling and native 1440p, while the GeForce RTX 3090 is better matched to 1440p.
Price & Value
The GeForce RTX 3090 currently lists from $1,219 GBP, $781 GBP less than the GeForce RTX 4080 SUPER at $2,000 GBP. Despite being slower, the GeForce RTX 3090 offers the better performance-per-dollar (~14% better value), so budget-focused buyers should weigh it carefully. The GeForce RTX 3090 is trading below its $1,499 GBP MSRP — a genuine deal. The GeForce RTX 4080 SUPER still sits about $1,001 GBP above its $999 GBP MSRP.
Power & Efficiency
At 320W against 350W, the GeForce RTX 4080 SUPER is both the lower-power and the more efficient card, making it the easier build to cool and power. 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 3090 carries 24GB versus 16GB on the GeForce RTX 4080 SUPER. The extra 8GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The GeForce RTX 3090's memory is also faster — 936 GB/s versus 736 GB/s (384-bit vs 256-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The GeForce RTX 4080 SUPER is roughly 4 years newer than the GeForce RTX 3090 (Ada Lovelace vs Ampere), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: GeForce RTX 3090 or GeForce RTX 4080 SUPER?
Choose the GeForce RTX 4080 SUPER if you want the most performance and can absorb the higher price. If you're optimizing for value, the GeForce RTX 3090 stretches your money further for only slightly lower performance.