AMD Radeon RX 6800 XT vs NVIDIA GeForce RTX 5080 Comparison

The NVIDIA GeForce RTX 5080 dominates the AMD Radeon RX 6800 XT across every benchmark in the comparison data, winning all 10 head-to-head tests. The largest margin comes in the 3DMark Steel Nomad DX12 test, where the RTX 5080 scores 8,637 against 3,689, a 134.1% advantage. This is not a close contest; the RTX 5080 is in a different performance tier, sitting at the 87th percentile of all GPUs compared to the RX 6800 XT's 85th percentile.

Head-to-Head Benchmarks

The 3DMark Steel Nomad DX12 result is the single biggest gap between these two cards. The RTX 5080's score of 8,637 more than doubles the RX 6800 XT's 3,689, translating to a 134.1% delta. This synthetic test points to a massive raw throughput advantage for the newer architecture, and it sets the tone for the rest of the data.

In Geekbench Vulkan, the RTX 5080 posts 255,450 points versus 136,875 for the RX 6800 XT, an 86.6% lead. The OpenCL result is closer but still decisive: 235,901 to 171,304, a 37.7% margin. These compute-oriented tests show that the RTX 5080's advantage extends beyond gaming-specific workloads into general GPU compute.

The PassMark suite reinforces the pattern. In PassMark G3D, the RTX 5080 scores 36,565 against 24,980, a 46.4% win. The GPU Compute test shows a 64.5% gap, with the RTX 5080 at 21,789 and the RX 6800 XT at 13,245. Even in legacy DirectX tests, the newer card wins decisively: DirectX 10 shows a 34.2% lead (208 vs 155), DirectX 11 a 22.7% lead (324 vs 264), DirectX 12 a 51% lead (151 vs 100), and DirectX 9 a 46.8% lead (389 vs 265).

The 2D performance gap is smaller but still favors NVIDIA. PassMark G2D scores are 1,415 for the RTX 5080 and 1,030 for the RX 6800 XT, a 37.4% difference. No benchmark in the comparison favors the AMD card; the RTX 5080 wins every single test, with deltas ranging from 22.7% to 134.1%.

Where Each One Wins

Every measurable benchmark in this comparison is won by the NVIDIA GeForce RTX 5080. There are zero wins for the AMD Radeon RX 6800 XT across the 10 head-to-head tests. The data shows no scenario in this dataset where the RX 6800 XT outperforms its rival.

The RTX 5080's strongest relative advantage is in 3DMark Steel Nomad DX12 (134.1% delta), which indicates extreme headroom in modern DirectX 12 workloads. Its next-best results come in Geekbench Vulkan (86.6%) and PassMark GPU Compute (64.5%), suggesting the Blackwell architecture excels at both graphics and compute tasks. The smaller deltas in PassMark DirectX 11 (22.7%) and G2D (37.4%) show that the gap narrows in older API scenarios, though the RTX 5080 still leads comfortably.

For the RX 6800 XT, the data offers no bright spots. Its closest relative performance comes in PassMark DirectX 11, where it trails by only 22.7%, and PassMark G2D, where the deficit is 37.4%. Even in those cases, the RTX 5080 holds a clear advantage. The RX 6800 XT remains a functional card, but the benchmark evidence places it firmly behind the RTX 5080 in every tested category.

FAQ

Q: How much faster is the RTX 5080 in 3DMark Steel Nomad DX12?

A: The RTX 5080 scores 8,637, which is 134.1% higher than the RX 6800 XT's 3,689. This is the largest margin of any benchmark in the comparison.

Q: Which card has a higher average benchmark score?

A: The RTX 5080 has an average benchmark score of 56,083, while the RX 6800 XT averages 48,477. The RTX 5080 sits at the 87th percentile of all GPUs; the RX 6800 XT is at the 85th percentile.

Q: Does the RX 6800 XT win any benchmark against the RTX 5080?

A: No. The RTX 5080 wins all 10 head-to-head benchmarks, with the RX 6800 XT failing to claim a single victory in any test.

Q: What is the closest benchmark result between the two cards?

A: The closest result is in PassMark DirectX 11, where the RTX 5080 scores 324 versus 264 for the RX 6800 XT, a 22.7% delta. Even this narrowest margin still favors NVIDIA substantially.

Q: How do the two cards compare in Geekbench Vulkan performance?

A: The RTX 5080 achieves 255,450 points in Geekbench Vulkan, which is 86.6% higher than the RX 6800 XT's 136,875 points. This represents a substantial lead in Vulkan-based compute and graphics workloads.

Q: Which card is at a higher performance percentile overall?

A: The RTX 5080 ranks at the 87th percentile of all GPUs, while the RX 6800 XT ranks at the 85th percentile. Despite the large benchmark gaps, both cards sit in the upper tier of the overall GPU distribution.

Specification Differences

The two cards differ across nearly every core specification. The RTX 5080 uses 10,752 shading units, 336 TMUs, and 112 ROPs, while the RX 6800 XT has 4,608 shading units, 288 TMUs, and 128 ROPs. The RTX 5080 also carries 84 RT cores and 336 tensor cores; the RX 6800 XT has 72 RT cores and no tensor cores.

Clock speeds favor NVIDIA decisively. The RTX 5080 runs at a 2,295 MHz base and 2,617 MHz boost, compared to the RX 6800 XT's 1,825 MHz base and 2,250 MHz boost. The RX 6800 XT lists a game clock of 2,015 MHz; the RTX 5080 has no game clock field. Memory clocks are 1,875 MHz (30 Gbps effective) for the RTX 5080 versus 2,000 MHz (16 Gbps effective) for the RX 6800 XT.

Both cards have 16 GB of memory and a 256-bit bus, but the type and bandwidth differ. The RTX 5080 uses GDDR7 with 960.0 GB/s bandwidth; the RX 6800 XT uses GDDR6 with 512.0 GB/s. Pixel rates are nearly identical (293.1 GPixel/s vs 288.0 GPixel/s), but texture rates diverge: 879.3 GTexel/s for the RTX 5080 versus 648.0 GTexel/s for the RX 6800 XT.

Power and connectivity also differ. The RTX 5080 has a 360 W TDP and requires a 750 W PSU with a single 16-pin connector. The RX 6800 XT has a 300 W TDP, a 700 W PSU recommendation, and two 8-pin connectors. The RTX 5080 uses PCIe 5.0 x16; the RX 6800 XT uses PCIe 4.0 x16. Display outputs are 1x HDMI 2.1b and 3x DisplayPort 2.1b for NVIDIA, versus 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C for AMD.

Architecture Differences

The RTX 5080 is built on NVIDIA's Blackwell 2.0 architecture with the GB203 chip, fabricated on a 5 nm process at TSMC. The RX 6800 XT uses AMD's RDNA 2.0 architecture with the Navi 21 chip, on a 7 nm process at TSMC. This process difference is significant: the RTX 5080 packs 45,600 million transistors into a 378 mm² die, achieving a density of 120.6M transistors per mm². The RX 6800 XT contains 26,800 million transistors across a larger 520 mm² die, with a density of 51.5M per mm².

The transistor and process advantages translate directly to the FP32 compute figures. The RTX 5080 delivers 56.28 TFLOPS of FP32 performance, while the RX 6800 XT manages 20.74 TFLOPS. In FP16, the RTX 5080 again hits 56.28 TFLOPS (1:1 ratio), while the RX 6800 XT reaches 41.47 TFLOPS (2:1 ratio). The RTX 5080's tensor cores provide dedicated AI acceleration hardware, a feature entirely absent from the RX 6800 XT.

The memory architecture differences stem from the GDDR7 versus GDDR6 split. The RTX 5080 achieves 960.0 GB/s bandwidth on a 256-bit bus, nearly double the RX 6800 XT's 512.0 GB/s on the same bus width. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical.

Physical dimensions also differ. The RTX 5080 measures 304 mm long, 137 mm tall, and 40 mm wide. The RX 6800 XT is shorter at 267 mm, less tall at 120 mm, but thicker at 50 mm. Both are dual-slot cards. The RTX 5080 is an active production product released in 2025, while the RX 6800 XT is end-of-life and was released in 2020.

The Verdict

The data is unambiguous: the NVIDIA GeForce RTX 5080 is the superior GPU in every benchmark included in this comparison. It wins 10 out of 10 head-to-head tests, with deltas ranging from 22.7% to 134.1%. Its average benchmark score of 56,083 is 15.7% higher than the RX 6800 XT's 48,477, and it holds a higher overall percentile ranking at 87 versus 85.

Anyone seeking maximum performance in modern DirectX 12 workloads should choose the RTX 5080, as its 134.1% lead in 3DMark Steel Nomad DX12 demonstrates overwhelming headroom. Users who prioritize compute performance in Vulkan or OpenCL will also find the RTX 5080 substantially faster, with 86.6% and 37.7% leads respectively. The presence of tensor cores and the 960.0 GB/s GDDR7 memory bandwidth give the RTX 5080 capabilities the RX 6800 XT cannot match.

The RX 6800 XT is not without merit as a legacy product. It remains at the 85th percentile of all GPUs, and its 16 GB of GDDR6 memory on a 256-bit bus is still respectable. Its lower 300 W TDP and 700 W PSU requirement make it less demanding on system power, and its physical footprint is shorter and less tall. However, the benchmark evidence shows it trails the RTX 5080 in every measurable test, with no single workload where it pulls ahead.

For buyers choosing between these two specific cards, the RTX 5080 is the clear recommendation based on performance data alone. Its launch MSRP is 999 USD. The RX 6800 XT launched at 649 USD, but the benchmark gap is far larger than the price gap suggests. The RTX 5080 delivers more than double the performance in the most demanding test and is ahead by at least 22.7% even in its weakest benchmark. The RX 6800 XT is a capable older card, but against this NVIDIA rival, it is outclassed across the board.