AMD Radeon Pro W6800X vs NVIDIA RTX PRO 5000 Blackwell Comparison

The comparison between the NVIDIA RTX PRO 5000 Blackwell and the AMD Radeon Pro W6800X is a study in generational extremes. The NVIDIA card is a recent, 98th-percentile workstation flagship built on a 5 nm process, while the AMD card is an end-of-life, 7 nm Mac-specific part from 2021 that still manages a 97th-percentile standing. The benchmark data shows a massive performance gulf, but the AMD card’s position in the percentile rankings proves it remains a relevant baseline in certain legacy workflows.

Head-to-Head Benchmarks

The only directly comparable benchmark between the two cards is Geekbench OpenCL, and the result is staggering. The NVIDIA RTX PRO 5000 Blackwell scores 254,116 points, while the AMD Radeon Pro W6800X scores 124,498 points. This represents a 104.1% advantage for the NVIDIA card — meaning it delivers more than double the compute performance of the AMD in this synthetic test. The delta is so large that it effectively separates the two into different performance tiers, regardless of their close percentile rankings.

The NVIDIA card’s average benchmark score of 182,109 further contextualizes its dominance. Meanwhile, the AMD card’s average score sits at 160,671, which is 13.3% lower than the NVIDIA’s average. However, the NVIDIA card’s nearest rivals in the aggregate data are all NVIDIA parts: the A100 SXM4 80 GB (183,725, -0.9%), RTX 5000 Ada Generation (184,664, -1.4%), RTX 4090 D (178,050, +2.3%), and A100 SXM4 40 GB (187,147, -2.7%). This suggests the RTX PRO 5000 Blackwell is positioned squarely within a cluster of high-end AI and rendering accelerators.

For the AMD card, its nearest rivals are a mix of NVIDIA and AMD pro cards: the A100 PCIe 40 GB (162,504, -1.1%), Radeon PRO W7800 (164,894, -2.6%), RTX A5500 (165,217, -2.8%), and RTX 4500 Ada Generation (166,094, -3.3%). The W6800X trails all of these, but only by single-digit percentages, indicating that its 2021 architecture still competes with mid-range 2023-2024 workstation cards in aggregate scoring. The head-to-head OpenCL test, however, breaks that illusion — the NVIDIA card is not just ahead; it is in another league entirely.

Where Each One Wins

The data shows one clear win for NVIDIA in the shared benchmark. The RTX PRO 5000 Blackwell takes Geekbench OpenCL outright with a 104.1% lead. This is the decisive metric for any workload that relies on generic GPU compute, such as simulation, physics, or machine learning inference. The NVIDIA card’s FP32 throughput of 66.94 TFLOPS versus the AMD’s 16.03 TFLOPS reinforces this category — a 4.2x raw compute advantage that the OpenCL score reflects.

The AMD Radeon Pro W6800X does not win any head-to-head benchmark in this dataset. Yet its 97th percentile ranking across all GPUs indicates it is not a slouch. The card holds its own in the aggregate because of its Geekbench Metal score of 196,844, which is a test the NVIDIA card does not have a recorded result for. This suggests the AMD card is optimized for Apple’s Metal API, making it the only viable choice in macOS environments where Metal is the primary graphics and compute interface. The NVIDIA card’s data shows no Metal benchmark, implying it is not designed or validated for that ecosystem.

In practical terms, the AMD card wins in Apple-specific workflows. Its 32 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s bandwidth is ample for high-resolution texture work in Mac-based content creation. The NVIDIA card, with 48 GB of GDDR7 on a 384-bit bus delivering 1.34 TB/s, wins in every cross-platform compute scenario. The NVIDIA card also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 — the same API list as the AMD — but with much higher execution resources.

The Verdict

For anyone running generic workstation applications on Windows or Linux, the NVIDIA RTX PRO 5000 Blackwell is the clear choice. The Geekbench OpenCL score of 254,116 versus 124,498 is not a marginal improvement; it is a doubling of raw compute capacity. The NVIDIA card’s 98th percentile rank, combined with its nearest rivals being the A100 and RTX 4090 D, places it in the top tier of all GPUs — a position the AMD card does not occupy despite its 97th percentile. The NVIDIA card also has a 110 RT cores versus the AMD’s 60, and 440 tensor cores versus none, making it categorically superior for ray tracing and AI-accelerated features.

The AMD Radeon Pro W6800X is only the right pick for a very specific user: someone bound to Apple’s MPX ecosystem. The card’s 200 W TDP and quad-slot design are tailored for Mac Pro chassis, and its Geekbench Metal score of 196,844 is the only benchmark where it demonstrates a capability that the NVIDIA card cannot match in this dataset. Its end-of-life status and 2021 release date, however, mean it is a legacy purchase. If the workload is Metal-specific and the platform is macOS, the W6800X remains a functional option. For anything else, the data overwhelmingly favors the NVIDIA card.

FAQ

Q: How much faster is the NVIDIA RTX PRO 5000 Blackwell in Geekbench OpenCL?

A: The NVIDIA card scores 254,116 points versus the AMD Radeon Pro W6800X’s 124,498 points, a 104.1% difference — meaning the NVIDIA card is more than twice as fast.

Q: Which card has a higher percentile ranking among all GPUs?

A: The NVIDIA RTX PRO 5000 Blackwell ranks in the 98th percentile, while the AMD Radeon Pro W6800X ranks in the 97th percentile. Despite the close percentile, the average benchmark scores differ significantly: 182,109 for NVIDIA and 160,671 for AMD.

Q: Does the AMD Radeon Pro W6800X win any benchmark in this comparison?

A: No. In the head-to-head benchmarks, the AMD card records zero wins against the NVIDIA card. The only benchmark it leads is Geekbench Metal (196,844), but the NVIDIA card has no recorded score for that test in this dataset.

Q: What are the nearest rivals to the NVIDIA card in average score?

A: The NVIDIA RTX PRO 5000 Blackwell’s closest rivals are the NVIDIA A100 SXM4 80 GB (183,725, -0.9%), RTX 5000 Ada Generation (184,664, -1.4%), GeForce RTX 4090 D (178,050, +2.3%), and A100 SXM4 40 GB (187,147, -2.7%).

Q: Is the AMD card still competitive with modern workstation GPUs?

A: Yes, in aggregate. Its average score of 160,671 trails the Radeon PRO W7800 (164,894) by only 2.6% and the RTX A5500 (165,217) by 2.8%, showing it is within striking distance of mid-range current parts despite being end-of-life.

Q: What is the memory configuration difference?

A: The NVIDIA card has 48 GB of GDDR7 on a 384-bit bus with 1.34 TB/s bandwidth. The AMD card has 32 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth.

Architecture Differences

The two cards come from fundamentally different design philosophies. The NVIDIA RTX PRO 5000 Blackwell uses the GB202 chip based on the Blackwell 2.0 architecture, fabricated on a 5 nm process at TSMC. This chip packs 92,200 million transistors onto a 750 mm² die, yielding a transistor density of 122.9 million per square millimeter. The AMD Radeon Pro W6800X uses the Navi 21 chip based on RDNA 2.0, also from TSMC but on a 7 nm process, with 26,800 million transistors on a 520 mm² die — a density of 51.5 million per square millimeter. The NVIDIA chip has 3.4x more transistors and a 2.4x higher density, reflecting a much newer manufacturing node.

The NVIDIA card features 14,080 shading units, 440 TMUs, and 160 ROPs, alongside 110 RT cores and 440 tensor cores. The AMD card has 3,840 shading units, 240 TMUs, and 96 ROPs, with 60 RT cores and no tensor cores — a critical difference for any AI or deep learning workload. The presence of tensor cores on the NVIDIA card enables hardware-accelerated neural network processing, which the AMD card cannot match. Clock speeds tell a different story: the AMD card has a higher base clock (1800 MHz vs. 1740 MHz) but a lower boost clock (2087 MHz vs. 2377 MHz). The NVIDIA card’s higher boost clock, combined with its massive shading unit count, drives its FP32 performance to 66.94 TFLOPS versus the AMD’s 16.03 TFLOPS.

Memory architecture also diverges sharply. The NVIDIA card uses GDDR7 memory at 1750 MHz (28 Gbps effective) with a 384-bit bus for 1.34 TB/s bandwidth. The AMD card uses GDDR6 at 2000 MHz (16 Gbps effective) with a 256-bit bus for 512.0 GB/s bandwidth. The NVIDIA card has 48 GB versus the AMD’s 32 GB. For FP16, the NVIDIA card achieves 66.94 TFLOPS at a 1:1 ratio with FP32, while the AMD card reaches 32.06 TFLOPS at a 2:1 ratio — meaning the AMD card’s FP16 advantage is only half its FP32 rate, whereas the NVIDIA card scales linearly.

Specification Differences

The most visible difference is form factor and power. The NVIDIA RTX PRO 5000 Blackwell is a dual-slot card with a 300 W TDP, requiring a 700 W power supply and a single 16-pin connector. The AMD Radeon Pro W6800X is a quad-slot card with a 200 W TDP, a 550 W suggested power supply, and an Apple MPX connector. The NVIDIA card is 267 mm long and 111 mm tall, while the AMD card is the same length but taller at 120 mm. The NVIDIA card has no width listed; the AMD card also has no width listed.

Display outputs differ significantly: the NVIDIA card offers 4x DisplayPort 2.1b, while the AMD card provides 1x HDMI 2.1 and 4x Thunderbolt. The bus interface is PCIe 5.0 x16 on the NVIDIA card versus Apple MPX on the AMD card — the latter being a proprietary Apple connector that limits the card to Mac Pro systems. The NVIDIA card’s release date is 2025-03-17, while the AMD card launched on 2021-08-02. The NVIDIA card is marked as Active production, whereas the AMD card is End-of-life. The NVIDIA card’s predecessor is "Workstation Ada," and its launch MSRP is 5,099 USD; the AMD card has no predecessor listed and a launch MSRP of 2,799 USD.