AMD Radeon Pro W6800X Duo vs NVIDIA H200 NVL Comparison

The data presents a stark contrast: the NVIDIA H200 NVL is a server-class accelerator designed for maximum compute throughput, while the AMD Radeon Pro W6800X Duo is a workstation card with a focus on graphics and display output. In the single available head-to-head benchmark, the H200 NVL delivers a commanding 169.3% higher OpenCL score than the W6800X Duo, positioning them in entirely different performance tiers. The H200 NVL sits at the 100th percentile of all GPUs, while the W6800X Duo is at the 96th, a gap that underscores the H200’s dominance in raw compute tasks. The W6800X Duo’s only advantage lies in its feature set, including display outputs and graphics API support, making it the only viable choice for tasks requiring a visual output.

The Verdict

Benchmark results indicate that the NVIDIA H200 NVL is the clear choice for compute-intensive, data-center workloads. Its OpenCL score of 334,891 is 169.3% higher than the AMD Radeon Pro W6800X Duo’s 124,335, a massive margin that reflects its purpose-built design for AI and high-performance computing. The H200 NVL also leads its nearest rivals, being 5.3% ahead of the AMD Instinct MI300X and 13.2% ahead of the NVIDIA L40S, though it trails the NVIDIA B200 by 3.1%. For any task where raw processing power is the primary metric, the H200 NVL is the superior option.

The AMD Radeon Pro W6800X Duo should be selected only for systems requiring graphics output and broad API compatibility. It is the only one of the two with display outputs, offering 1x HDMI 2.1 and 4x Thunderbolt, and it supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The H200 NVL has no display outputs and lists its DirectX, OpenGL, and Vulkan APIs as "N/A". The W6800X Duo, with its launch MSRP of 4,999 USD, is also an end-of-life product, whereas the H200 NVL is active, suggesting a longer support horizon for the NVIDIA part.

The data strongly implies that these are not competitors but rather tools for different jobs. The H200 NVL’s average benchmark score of 334,891 places it in the top percentile, while the W6800X Duo’s average of 135,774 is closer to its nearest rivals, the AMD Radeon PRO W6800 (135,396) and NVIDIA A10M (135,230), with deltas of 0.3% and 0.4% respectively. The W6800X Duo is a capable workstation card, but it is not in the same performance class as the H200 NVL.

Architecture Differences

The architectural divide is fundamental. The NVIDIA H200 NVL uses the GH100 chip based on the Hopper architecture, built on a 5 nm process at TSMC with 80,000 million transistors on an 814 mm² die. This yields a transistor density of 98.3M per mm². In contrast, the AMD Radeon Pro W6800X Duo uses the Navi 21 chip with RDNA 2.0 architecture, built on a 7 nm process, also at TSMC, with 26,800 million transistors on a 520 mm² die, resulting in a density of 51.5M per mm². The H200 NVL’s more advanced node and larger die allow for significantly more compute resources.

The memory subsystems are also vastly different. The H200 NVL features 141 GB of HBM3e memory on a 6144-bit bus, delivering 4.89 TB/s of bandwidth. The W6800X Duo has 32 GB of GDDR6 memory on a 256-bit bus, providing 512.0 GB/s. This 9.5x difference in bandwidth is a key factor in the H200’s compute advantage, as it can feed its processors at a much higher rate. The H200 NVL has 16,896 shading units, 528 TMUs, and 528 tensor cores, while the W6800X Duo has 3,840 shading units, 240 TMUs, and 60 ray tracing cores. The H200 NVL does not list ray tracing cores, while the W6800X Duo does not list tensor cores, highlighting their different focuses.

The H200 NVL’s clock speeds are lower (1365 MHz base, 1785 MHz boost) compared to the W6800X Duo (1800 MHz base, 1967 MHz boost), but the sheer number of processing units on the H200 more than compensates. The H200 NVL also uses a PCIe 5.0 x16 interface, while the W6800X Duo uses the Apple MPX interface, reflecting its Mac-specific design. The power requirements differ as well, with the H200 NVL having a 600 W TDP and the W6800X Duo a 400 W TDP.

Head-to-Head Benchmarks

The only direct comparison available is the Geekbench OpenCL test, where the NVIDIA H200 NVL scores 334,891 against the AMD Radeon Pro W6800X Duo’s 124,335. This represents a 169.3% delta in favor of the H200 NVL, meaning the NVIDIA part is more than 2.5 times faster in this workload. This is not a marginal win but a complete dominance, reflecting the H200’s superior compute architecture, memory bandwidth, and processing unit count.

This single benchmark result is telling. The H200 NVL’s score of 334,891 is not only far ahead of the W6800X Duo but also places it above its nearest rivals, including the AMD Instinct MI300X (317,994) and the NVIDIA L40S (295,763). The W6800X Duo’s score of 124,335 is nearly identical to its own nearest rivals, such as the AMD Radeon PRO W6800 (135,396) and NVIDIA A10M (135,230), with deltas of 0.3% and 0.4% respectively. This indicates that the W6800X Duo is performing at the expected level for its class, while the H200 NVL is operating in a higher tier altogether.

The data shows no benchmark where the W6800X Duo wins. The H200 NVL takes the sole head-to-head win, and the W6800X Duo’s other benchmark scores (Geekbench Metal at 157,365 and Vulkan at 125,622) are not comparable to the H200’s OpenCL result, as the H200 does not support these APIs. This lack of overlap in supported benchmarks further emphasizes their different target markets.

FAQ

Q: Which GPU has a higher OpenCL benchmark score?

A: The NVIDIA H200 NVL has a significantly higher OpenCL score of 334,891, compared to the AMD Radeon Pro W6800X Duo’s 124,335, a difference of 169.3%.

Q: Does the AMD Radeon Pro W6800X Duo support display outputs?

A: Yes, the W6800X Duo features 1x HDMI 2.1 and 4x Thunderbolt outputs, while the NVIDIA H200 NVL has no display outputs.

Q: What is the memory bandwidth difference between the two?

A: The NVIDIA H200 NVL has a memory bandwidth of 4.89 TB/s from its 141 GB HBM3e memory, while the AMD Radeon Pro W6800X Duo has 512.0 GB/s from its 32 GB GDDR6 memory.

Q: Which GPU is at a higher performance percentile?

A: The NVIDIA H200 NVL is at the 100th percentile of all GPUs, while the AMD Radeon Pro W6800X Duo is at the 96th percentile.

Q: What API support does the AMD Radeon Pro W6800X Duo have that the NVIDIA H200 NVL lacks?

A: The W6800X Duo supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the H200 NVL lists these APIs as "N/A".

Q: How does the H200 NVL compare to its nearest rival, the NVIDIA B200?

A: The NVIDIA H200 NVL is 3.1% behind the NVIDIA B200 in average benchmark score, with scores of 334,891 and 345,482 respectively.

Where Each One Wins

The NVIDIA H200 NVL wins decisively in raw compute performance. Its OpenCL score of 334,891 is 169.3% higher than the W6800X Duo’s, making it the obvious choice for data center tasks like AI training, scientific simulation, and large-scale data processing. Its 141 GB of HBM3e memory with 4.89 TB/s bandwidth provides the capacity and speed needed for massive datasets. The H200 NVL’s 16,896 shading units and 528 tensor cores are geared toward parallel computation, and its 60.32 TFLOPS of FP32 performance dwarfs the W6800X Duo’s 15.11 TFLOPS. This GPU is also 5.3% ahead of the AMD Instinct MI300X and 13.2% ahead of the NVIDIA L40S, cementing its position at the high end.

The AMD Radeon Pro W6800X Duo wins in graphics and display-centric workloads. It is the only one with display outputs, offering 1x HDMI 2.1 and 4x Thunderbolt, and it supports a full suite of graphics APIs including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its 60 ray tracing cores and higher clock speeds (1967 MHz boost vs. 1785 MHz) make it more suitable for real-time rendering and visualization tasks. Its 188.8 GPixel/s pixel rate is also higher than the H200 NVL’s 42.84 GPixel/s, suggesting it can handle graphics output more efficiently. The W6800X Duo is also a quad-slot card compared to the H200’s dual-slot, indicating a different physical design philosophy.

Specification Differences

The two GPUs differ in almost every specification category. The NVIDIA H200 NVL uses the GH100 chip (Hopper architecture) on a 5 nm process with 80,000 million transistors, while the AMD Radeon Pro W6800X Duo uses Navi 21 (RDNA 2.0) on a 7 nm process with 26,800 million transistors. The H200 NVL has a die size of 814 mm², while the W6800X Duo’s is 520 mm².

Memory specifications are starkly different: the H200 NVL offers 141 GB of HBM3e with a 6144-bit bus and 4.89 TB/s bandwidth, whereas the W6800X Duo has 32 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The H200 NVL has 16,896 shading units, 528 TMUs, and 528 tensor cores, while the W6800X Duo has 3,840 shading units, 240 TMUs, and 60 ray tracing cores. The H200 NVL does not list RT cores, and the W6800X Duo does not list tensor cores.

Clock speeds favor the AMD part, with a base of 1800 MHz and boost of 1967 MHz, versus the H200 NVL’s 1365 MHz base and 1785 MHz boost. However, the H200 NVL has higher texture and FP32 rates (942.5 GTexel/s and 60.32 TFLOPS) compared to the W6800X Duo (472.1 GTexel/s and 15.11 TFLOPS). The H200 NVL has a 600 W TDP and requires a 1000 W PSU, while the W6800X Duo has a 400 W TDP and suggests an 800 W PSU. The H200 NVL is dual-slot with an 8-pin EPS connector and PCIe 5.0 x16 interface, while the W6800X Duo is quad-slot with an Apple MPX interface. The H200 NVL has no display outputs, while the W6800X Duo has 1x HDMI 2.1 and 4x Thunderbolt. Finally, the H200 NVL is an active product released in November 2024, while the W6800X Duo is end-of-life, released in August 2021.