GeForce RTX 4080 vs Radeon RX 6900 XT
The GeForce RTX 4080 pulls ahead here — substantially quicker, about 38% ahead of the Radeon RX 6900 XT.
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GeForce RTX 4080 vs Radeon RX 6900 XT: In-Depth Breakdown
Performance: GeForce RTX 4080 vs Radeon RX 6900 XT
The GeForce RTX 4080 is significantly faster, around 38% ahead of the Radeon RX 6900 XT. That gap is enough to move it up a tier: the GeForce RTX 4080 is comfortable at 4K with upscaling and native 1440p, while the Radeon RX 6900 XT is better matched to 1440p.
Power & Efficiency
At 300W vs 320W, the Radeon RX 6900 XT is the gentler load on your system. The GeForce RTX 4080's extra power draw buys more performance per watt, not just more heat — worth it if your PSU has the headroom. Its more modern Ada Lovelace architecture on a TSMC 4N process is part of why it does more with each watt.
Generation & Longevity
The GeForce RTX 4080 is roughly 2 years newer than the Radeon RX 6900 XT (Ada Lovelace vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 4080 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 6900 XT offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: GeForce RTX 4080 or Radeon RX 6900 XT?
The GeForce RTX 4080 is the faster card by about 38%. 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.
Frequently Asked Questions
Is the GeForce RTX 4080 better than the Radeon RX 6900 XT?
Which is better for 4K gaming, the GeForce RTX 4080 or the Radeon RX 6900 XT?
Which should you buy: GeForce RTX 4080 or Radeon RX 6900 XT?
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce RTX 4080 | Radeon RX 6900 XT |
|---|---|---|
| Architecture | Ada Lovelace | RDNA 2 |
| Process Node | TSMC 4N | TSMC N7 |
| CUDA Cores (CUDA Cores / Stream Processors) | 9,728✓ | 5,120 |
| Ray Tracing Cores | 76 | 80✓ |
| Tensor / AI Cores | 304 | — |
Clock Speeds
| Specification | GeForce RTX 4080 | Radeon RX 6900 XT |
|---|---|---|
| Base Clock | 2,205 MHz✓ | 1,825 MHz |
| Boost Clock | 2,505 MHz✓ | 2,250 MHz |
Memory
| Specification | GeForce RTX 4080 | Radeon RX 6900 XT |
|---|---|---|
| VRAM Capacity | 16 GB | 16 GB |
| Memory Type | GDDR6X | GDDR6 |
| Memory Bus | 256-bit | 256-bit |
| Memory Speed | 22.4 Gbps✓ | 16 Gbps |
| Bandwidth | 716.8 GB/s✓ | 512 GB/s |
Connectivity & Power
| Specification | GeForce RTX 4080 | Radeon RX 6900 XT |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 320 W | 300 W✓ |
| Power Connectors | 1x 16-pin | 2x 8-pin |
| Released | Sep 2022 | Dec 2020 |
