The RX 6900 XT might be the extreme flagship of the latest RDNA 2.0 set of graphics cards, but their prices keep them out of the reach of most high-end PC gamers. On the other hand, the RX 6800 XT is closer to being reasonably affordable at a price tag of $ 649. The RX 6800 XT is much more expensive than the RX 5700 XT as it costs a whopping $ 649. Compare this to the RX 5700 XT, which came originally at a price of $ 399. Meanwhile, the NVIDIA closest equivalent card is the RTX 3080 which costs $ 699.
Spec for spec, this RX 6800 XT leapfrogs its direct predecessor, the RX 5700 XT, by boasting 92.3 % more fps. The RX 6800 XT has 16 GB RAM compared to the RX 5700 XT 's 8 GB video memory.
Compared to its NVIDIA 's closest rival, RTX 3080, the RX 6800 XT was 1.6 % faster. Fortunately, gaming performance was quite impressive. The RX 6800 XT consistently delivers great frame rate increases over the RX 5700 XT and it really justifies an upgrade.
For 1080p Full HD, we were able to play Microsoft Flight Simulator, Immortals of Aveum, The Callisto Protocol, Remnant II, The Last of Us Part I at 68 fps to 85 fps and kept frame rates hovering around 75 fps. For 1440p Quad HD, we were able to play The Last of Us Part I, Forspoken, Atomic Heart, Star Wars Jedi: Survivor, Hogwarts Legacy at 65 fps to 85 fps and kept frame rates hovering around 73 fps.
For 2160p 4K, we were able to play Metro Exodus, GreedFall, Elden Ring, Cyberpunk 2077, Godfall at 60 fps to 61 fps and kept frame rates hovering around 60 fps.
The RX 7900 XT is much more cheaper than the RX 6950 XT as it costs $ 899. Compare this to the RX 6950 XT, which came originally at a price of $ 1099. Meanwhile, the NVIDIA closest equivalent card is the RTX 4080 which costs $ 1199. Spec for spec, this RX 7900 XT leapfrogs its direct predecessor, the RX 6950 XT, by boasting 10.1 % more fps.
The RX 7900 XT has 20 GB RAM compared to the RX 6950 XT 's 16 GB video memory. Fortunately, gaming performance was quite impressive. The RX 7900 XT consistently delivers great frame rate increases over the RX 6950 XT and it really justifies an upgrade.
Compared to its NVIDIA 's closest rival, RTX 4080, the RX 7900 XT was -5.3 % slower. For 1080p Full HD, we were able to play Starfield, Microsoft Flight Simulator, Immortals of Aveum, The Callisto Protocol, Remnant II at 64 fps to 96 fps and kept frame rates hovering around 85 fps.
For 1440p Quad HD, we were able to play Remnant II, The Callisto Protocol, Microsoft Flight Simulator, The Last of Us Part I, Forspoken at 64 fps to 81 fps and kept frame rates hovering around 74 fps. For 2160p 4K, we were able to play Ratchet and Clank Rift Apart, Borderlands 3, Red Dead Redemption 2, Assassin's Creed Valhalla, A Plague Tale: Requiem at 64 fps to 75 fps and kept frame rates hovering around 70 fps.
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Board Number | - | 109-D704A7-00_02 |
| Length | 267 mm 10.5 inches | 276 mm 10.9 inches |
| Outputs | 1x HDMI 2x DisplayPort 1x USB Type-C | 1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C |
| Power Connectors | 2x 8-pin | 2x 8-pin |
| Slot Width | Triple-slot | Dual-slot |
| TDP | 300 W | 300 W |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Boost Clock | 2250 MHz | 2394 MHz |
| Memory Clock | 2000 MHz 16 Gbps effective | 2500 MHz 20 Gbps effective |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Bus Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| Generation | Navi II | Navi III (RX 7000) |
| Launch Price | 649 USD | 899 USD |
| Production | Active | Active |
| Release Date | Nov 18th, 2020 | Nov 3rd, 2022 |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| DirectX | 12 Ultimate (12_2) | 12 Ultimate (12_2) |
| OpenCL | 2 | 2.1 |
| OpenGL | 4.6 | 4.6 |
| Shader Model | 6.5 | 6.7 |
| Vulkan | 1.2 | 1.3 |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Architecture | RDNA 2.0 | RDNA 3.0 |
| Die Size | 536 mm² | 520 mm² |
| GPU Name | Navi 21 | Navi 31 |
| GPU Variant | Navi 21 XL | Navi 31 XT (215-145000156) |
| Process Size | 7 nm | 5 nm |
| Transistors | 26,800 million | 57,700 million |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Bandwidth | 512.0 GB/s | 800.0 GB/s |
| Memory Bus | 256 bit | 320 bit |
| Memory Size | 16384 MB | 20 GB |
| Memory Type | GDDR6 | GDDR6 |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| Compute Units | 72 | 84 |
| ROPs | 128 | 192 |
| Shading Units | 4608 | 5376 |
| TMUs | 288 | 336 |
| RX 6800 XT | RX 7900 XT | |
|---|---|---|
| FP16 (half) performance | 41.47 TFLOPS (2:1) | 103.0 TFLOPS (2:1) |
| FP32 (float) performance | 20.74 TFLOPS | 51.48 TFLOPS |
| FP64 (double) performance | 1,296 GFLOPS (1:16) | 3.218 TFLOPS (1:16) |
| Pixel Rate | 288.0 GPixel/s | 459.6 GPixel/s |
| Texture Rate | 648.0 GTexel/s | 804.4 GTexel/s |
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