AMD Radeon Pro Vega 56 vs NVIDIA GeForce RTX 5080 Comparison

The AMD Radeon Pro Vega 56 and the NVIDIA GeForce RTX 5080 are separated by nearly a decade of GPU architecture, and the benchmark data reflects a decisive generational shift. While the Vega 56 holds a respectable place in the historical record, the RTX 5080's compute and rendering capabilities place it in a different performance class entirely, making this comparison less about nuanced trade-offs and more about quantifying the scale of technological advancement.

Head-to-Head Benchmarks

The direct comparison data available is limited to two compute-oriented tests, but the results are stark and unambiguous. In the Geekbench OpenCL test, the NVIDIA GeForce RTX 5080 scores 235,901 points, while the AMD Radeon Pro Vega 56 manages 61,930 points. This represents a delta of -73.7% for the AMD card, meaning the RTX 5080 delivers a raw compute performance advantage of nearly four times. The margin is even more pronounced in the Geekbench Vulkan test, where the RTX 5080 scores 255,450 against the Vega 56's 66,004 points, a delta of -74.2%. In both scenarios, the RTX 5080 wins outright, and the data shows no benchmark where the AMD Radeon Pro Vega 56 takes the lead.

These deltas are not marginal improvements; they are transformative jumps. The RTX 5080's OpenCL score is roughly 3.8 times higher than the Vega 56's, and its Vulkan score is approximately 3.9 times higher. For context, the Radeon Pro Vega 56's average benchmark score of 63,693 places it in the 89th percentile of all GPUs, while the RTX 5080's average of 56,083 sits in the 87th percentile. This apparent contradiction—a higher percentile for a lower-scoring card—highlights how percentile rankings depend on the distribution of scores across the entire database, where the Vega 56's limited but consistent performance keeps it above a different set of entries than the RTX 5080's varied workload results.

The RTX 5080's nearest rivals, based on average score, include the AMD Radeon 8060S (deltaPct 0.6%), AMD Radeon RX 6750 GRE 12 GB (deltaPct 0.7%), and AMD Radeon Pro W5700X (deltaPct 2.3%), showing it clusters with modern mid-range to high-end parts. The Vega 56's nearest rivals are the AMD Radeon RX 7600M (deltaPct -0.1%), AMD Radeon RX 9060 XT LP (deltaPct -0.2%), and NVIDIA CMP 30HX (deltaPct -0.2%), indicating it sits alongside older or lower-tier products. The gap between these two cards' peer groups is vast, further underscoring that the RTX 5080 is not merely a successor but a leap into a different performance tier.

The Verdict

From the data alone, the choice is clear for anyone prioritizing raw compute or rendering performance: the NVIDIA GeForce RTX 5080 is the superior product. Its decisive wins in both Geekbench OpenCL and Vulkan, with deltas exceeding 73%, demonstrate a commanding lead in general-purpose and graphics compute workloads. Benchmark results indicate that any task leveraging these APIs—from content creation to game rendering—will see massive gains on the RTX 5080.

The AMD Radeon Pro Vega 56, however, is an end-of-life product from 2017, and its data reflects a different era. Its 89th percentile ranking against all GPUs suggests it was a strong performer for its time, and it still outpaces many lower-tier modern cards. But against the RTX 5080, it is outclassed. The verdict for most users is straightforward: the RTX 5080 is the only logical pick for new builds or upgrades where maximum performance is the goal. The Vega 56 should only be considered if it is already in hand and the workload is undemanding, as its performance ceiling is significantly lower.

Architecture Differences

The two GPUs are built on fundamentally different architectures, which explains the performance chasm. The AMD Radeon Pro Vega 56 uses the Vega 10 chip, based on the GCN 5.0 architecture, manufactured on a 14 nm process at GlobalFoundries. It packs 12,500 million transistors into a die size of 495 mm², yielding a transistor density of 25.3M per mm². In contrast, the NVIDIA GeForce RTX 5080 uses the GB203 chip, based on the Blackwell 2.0 architecture, manufactured on a 5 nm process at TSMC. It contains 45,600 million transistors on a smaller 378 mm² die, achieving a density of 120.6M per mm²—nearly five times higher.

This architectural leap brings new features. The RTX 5080 includes 84 dedicated ray tracing cores and 336 tensor cores, which are absent from the Vega 56's specification sheet. These hardware units enable real-time ray tracing and AI-accelerated features like DLSS, which the older GCN architecture cannot support. The RTX 5080 also supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Vega 56 is limited to DirectX 12 (12_1) and Vulkan 1.3. The memory subsystems diverge as well: the Vega 56 uses 8 GB of HBM2 on a 2048-bit bus, while the RTX 5080 uses 16 GB of GDDR7 on a 256-bit bus. The RTX 5080's GDDR7 memory operates at 1875 MHz (30 Gbps effective) versus the Vega 56's 786 MHz (1572 Mbps effective), leading to a bandwidth of 960.0 GB/s versus 402.4 GB/s.

Specification Differences

The specification tables reveal a comprehensive generational upgrade. The RTX 5080 has 10,752 shading units, 336 texture mapping units, and 112 ROPs, compared to the Vega 56's 3,584 shading units, 224 TMUs, and 64 ROPs. Clock speeds are also much higher: the RTX 5080 has a base clock of 2295 MHz and a boost of 2617 MHz, versus the Vega 56's 1138 MHz base and 1250 MHz boost. This combination of more cores and higher clocks leads to dramatically higher fill rates—the RTX 5080 achieves 293.1 GPixel/s and 879.3 GTexel/s, compared to 80.00 GPixel/s and 280.0 GTexel/s for the Vega 56.

Compute throughput shows the largest gap. The RTX 5080 delivers 56.28 TFLOPS FP32 and 56.28 TFLOPS FP16 (1:1), while the Vega 56 produces 8.960 TFLOPS FP32 and 17.92 TFLOPS FP16 (2:1). The RTX 5080 also has a higher TDP at 360 W versus 210 W, but it requires a 16-pin power connector and a suggested 750 W PSU, whereas the Vega 56 uses no external power connectors and is an IGP (integrated graphics processor) with dual-slot spacing. The RTX 5080 is a 304 mm long, 137 mm high, 40 mm wide card, while the Vega 56's dimensions are not specified. The RTX 5080 uses PCIe 5.0 x16, while the Vega 56 uses PCIe 3.0 x16. Display outputs differ: the RTX 5080 offers 1x HDMI 2.1b and 3x DisplayPort 2.1b, while the Vega 56 has 1x HDMI 2.0b and 3x DisplayPort 1.4a.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon Pro Vega 56 has an average benchmark score of 63,693, which is higher than the NVIDIA GeForce RTX 5080's average of 56,083. However, this is skewed by the different benchmark suites run on each card.

Q: How much faster is the RTX 5080 in Geekbench Vulkan?

A: The RTX 5080 scores 255,450 in Geekbench Vulkan, which is 74.2% higher than the Vega 56's 66,004 points, meaning it is roughly 3.9 times faster.

Q: Does the RTX 5080 support ray tracing hardware?

A: Yes, the RTX 5080 includes 84 ray tracing cores, a feature not present in the AMD Radeon Pro Vega 56's specifications.

Q: What is the memory configuration of each card?

A: The RTX 5080 has 16 GB of GDDR7 memory on a 256-bit bus with 960.0 GB/s bandwidth, while the Vega 56 has 8 GB of HBM2 on a 2048-bit bus with 402.4 GB/s bandwidth.

Q: Which card has a higher transistor density?

A: The RTX 5080 has a transistor density of 120.6M per mm², significantly higher than the Vega 56's 25.3M per mm², due to its smaller 5 nm process node versus 14 nm.

Q: What is the release date and production status of each card?

A: The RTX 5080 was released on 2025-01-29 and is active in production, while the Vega 56 was released on 2017-08-13 and is end-of-life.

Where Each One Wins

The NVIDIA GeForce RTX 5080 wins in every direct head-to-head benchmark, making it the clear choice for any workload where compute performance matters. Its massive lead in OpenCL and Vulkan scores indicates superiority in GPU-accelerated tasks like 3D rendering, scientific simulations, and machine learning inference. The 16 GB GDDR7 memory and higher bandwidth also make it better suited for large datasets and high-resolution textures. Additionally, the presence of ray tracing cores and tensor cores gives it a feature set advantage for modern games and AI applications, even if those specific workloads were not directly benchmarked in the data.

The AMD Radeon Pro Vega 56, despite losing all direct comparisons, still holds a niche. Its 89th percentile ranking against all GPUs suggests it remains competitive against many older or entry-level cards. Its lower TDP of 210 W and lack of external power connectors make it an efficient option for legacy systems or integrated builds where power delivery is limited. For users running older software that does not leverage DirectX 12 Ultimate or Vulkan 1.4 features, the Vega 56's compatibility with DirectX 12 (12_1) and Vulkan 1.3 may be sufficient. However, these advantages are contextual and do not offset the RTX 5080's overwhelming performance lead in the data. The RTX 5080 is the winner for nearly all modern use cases, while the Vega 56 is best reserved for historical or low-power scenarios.