GeForce RTX 3080 12GB
Radeon RX 6900 XT
GeForce RTX 3080 12GB vs Radeon RX 6900 XT Performance Spectrum
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
GeForce RTX 3080 12GB vs Radeon RX 6900 XT FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
GeForce RTX 3080 12GB vs Radeon RX 6900 XT: Pros, Cons & Final Verdict
See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.
GeForce RTX 3080 12GB
2022Why buy it
- ✅Access to DLSS 2 Super Resolution (2020).
Trade-offs
- ❌Lower average FPS than Radeon RX 6900 XT across 50 tracked games in our benchmark data.
- ❌Less VRAM, with 12 GB vs 16 GB for high-resolution textures and newer games.
- ❌No equivalent frame-generation stack like FSR Frame Generation + AFMF (2023).
- ❌25.1% HIGHER MSRP$1,250 MSRPvs$999 MSRP
- ❌Lower G3D Mark per dollar, at 21.3 vs 26.8 G3D/$ ($1,250 MSRP vs $999 MSRP).
Radeon RX 6900 XT
2020Why buy it
- ✅5.8% more average FPS across 50 tracked games in our benchmark data.
- ✅Costs $251 less on MSRP ($999 MSRP vs $1,250 MSRP).
- ✅Delivers 25.9% more G3D Mark for each dollar spent, at 26.8 vs 21.3 G3D/$ ($999 MSRP vs $1,250 MSRP).
- ✅Access to a newer frame-generation stack with FSR Frame Generation + AFMF (2023).
- ✅33.3% more VRAM for high-resolution textures and newer games (16 GB vs 12 GB).
Trade-offs
- ❌No DLSS support; it relies on FSR 3 (2023) instead.
Quick Answers
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GeForce RTX 3080 12GB vs Radeon RX 6900 XT Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
GeForce RTX 3080 12GB
The GeForce RTX 3080 12GB is manufactured by NVIDIA. It was released in January 11 2022. It features the Ampere architecture. The core clock ranges from 1260 MHz to 1710 MHz. It has 8960 shading units. The thermal design power (TDP) is 350W. Manufactured using 8 nm process technology. It features 70 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 26,569 points. Launch price was $799.
Radeon RX 6900 XT
The Radeon RX 6900 XT is manufactured by AMD. It was released in October 28 2020. It features the RDNA 2.0 architecture. The core clock ranges from 1825 MHz to 2250 MHz. It has 5120 shading units. The thermal design power (TDP) is 300W. Manufactured using 7 nm process technology. It features 80 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 26,729 points. Launch price was $999.
Graphics Performance
The GeForce RTX 3080 12GB scores 26,569 and the Radeon RX 6900 XT reaches 26,729 in the G3D Mark benchmark — just a 0.6% difference, making them near-identical in rasterization performance. The GeForce RTX 3080 12GB is built on Ampere while the Radeon RX 6900 XT uses RDNA 2.0, both on 8 nm vs 7 nm. Shader units: 8,960 (GeForce RTX 3080 12GB) vs 5,120 (Radeon RX 6900 XT). Raw compute: 30.64 TFLOPS (GeForce RTX 3080 12GB) vs 23.04 TFLOPS (Radeon RX 6900 XT). Boost clocks: 1710 MHz vs 2250 MHz. Ray tracing: 70 RT cores (GeForce RTX 3080 12GB) vs 80 (Radeon RX 6900 XT) with 280 Tensor cores.
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| G3D Mark Score | 26,569 | 26,729 |
| Architecture | Ampere | RDNA 2.0 |
| Process Node | 8 nm | 7 nm |
| Shading Units | 8960+75% | 5120 |
| Compute (TFLOPS) | 30.64 TFLOPS+33% | 23.04 TFLOPS |
| Boost Clock | 1710 MHz | 2250 MHz+32% |
| ROPs | 96 | 128+33% |
| TMUs | 280 | 320+14% |
| L1 Cache | 8.8 MB+780% | 1 MB |
| L2 Cache | 6 MB+50% | 4 MB |
| Ray Tracing Cores | 70 | 80+14% |
Advanced Features (DLSS/FSR)
The clearest feature edge for the Radeon RX 6900 XT is support for FSR Frame Generation + AFMF. In games that support it, that can smooth out motion and lift perceived FPS. The GeForce RTX 3080 12GB does not have comparable native support in the same tier.The GeForce RTX 3080 12GB gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon RX 6900 XT leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| Upscaling Tech | DLSS 2 Super Resolution | FSR 3 |
| Frame Generation | Not Supported | FSR Frame Generation + AFMF |
| Ray Reconstruction | No | No |
| Low Latency | NVIDIA Reflex | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce RTX 3080 12GB has 12 GB of VRAM, while the Radeon RX 6900 XT carries 16 GB. Radeon RX 6900 XT gives you 33.3% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bandwidth: 912 GB/s (GeForce RTX 3080 12GB) vs 512 GB/s (Radeon RX 6900 XT) — a 78.1% advantage for the GeForce RTX 3080 12GB. Memory bus width is 384-bit on the GeForce RTX 3080 12GB and 256-bit on the Radeon RX 6900 XT. L2 Cache: 6 MB (GeForce RTX 3080 12GB) vs 4 MB (Radeon RX 6900 XT) — the GeForce RTX 3080 12GB has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| VRAM Capacity | 12 GB | 16 GB+33% |
| Memory Type | GDDR6X | GDDR6 |
| Memory Bandwidth | 912 GB/s+78% | 512 GB/s |
| Bus Width | 384-bit+50% | 256-bit |
| L2 Cache | 6 MB+50% | 4 MB |
Display & API Support
DirectX support: 12 Ultimate (GeForce RTX 3080 12GB) vs 12 Ultimate (Radeon RX 6900 XT). Vulkan: 1.4 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 4.
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| DirectX | 12 Ultimate | 12 Ultimate |
| Vulkan | 1.4+8% | 1.3 |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 4 | 4 |
Media & Encoding
Hardware encoder: NVENC 7th gen (GeForce RTX 3080 12GB) vs VCN 3.0 (Radeon RX 6900 XT). Decoder: NVDEC 5th gen vs VCN 3.0. Supported codecs: H.264,H.265/HEVC,AV1 (GeForce RTX 3080 12GB) vs H.264,H.265/HEVC,AV1,VP9 (Radeon RX 6900 XT).
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| Encoder | NVENC 7th gen | VCN 3.0 |
| Decoder | NVDEC 5th gen | VCN 3.0 |
| Codecs | H.264,H.265/HEVC,AV1 | H.264,H.265/HEVC,AV1,VP9 |
Power & Dimensions
The GeForce RTX 3080 12GB draws 350W versus the Radeon RX 6900 XT's 300W — a 15.4% difference. The Radeon RX 6900 XT is more power-efficient. Recommended PSU: 750W (GeForce RTX 3080 12GB) vs 850W (Radeon RX 6900 XT). Power connectors: 2x 8-pin vs 2x 8-pin. Card length: 285mm vs 267mm, occupying 2 vs 2.5 slots. Typical load temperature: 80°C vs 80°C.
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| TDP | 350W | 300W-14% |
| Recommended PSU | 750W-12% | 850W |
| Power Connector | 2x 8-pin | 2x 8-pin |
| Length | 285mm | 267mm |
| Height | 112mm | 120mm |
| Slots | 2-20% | 2.5 |
| Temp (Load) | 80°C | 80°C |
| Perf/Watt | 75.9 | 89.1+17% |
Value Analysis
At launch, the GeForce RTX 3080 12GB came in at $1250, while the Radeon RX 6900 XT launched at $999. On MSRP, Radeon RX 6900 XT was 20.1% cheaper ($251 less). Performance per dollar on MSRP (G3D Mark / MSRP): 21.3 (GeForce RTX 3080 12GB) vs 26.8 (Radeon RX 6900 XT) — the Radeon RX 6900 XT offers 25.8% better value. The newer card here is GeForce RTX 3080 12GB (2022 vs 2020).
| Feature | GeForce RTX 3080 12GB | Radeon RX 6900 XT |
|---|---|---|
| MSRP | $1250 | $999-20% |
| Performance per Dollar | 21.3 | 26.8+26% |
| Codename | GA102 | Navi 21 |
| Release | January 11 2022 | October 28 2020 |
| Ranking | #38 | #35 |
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