AMD Radeon PRO W6600 vs NVIDIA H200 NVL Comparison

Where Each One Wins

The benchmark data sets a clear dividing line between these two cards. The NVIDIA H200 NVL wins the only directly comparable workload recorded in the database, the Geekbench OpenCL test, with a score of 334,891 against the AMD Radeon PRO W6600's 73,514. That is a 355.5% advantage, a gap so large that it defines the entire comparison.

The AMD Radeon PRO W6600 does not win any recorded benchmark in this head-to-head matchup. Its wins, if they exist at all, would have to come from workloads not captured in the database's comparative testing. The W6600 does have additional benchmark entries in the database, specifically Geekbench Metal at 94,042 and Geekbench Vulkan at 78,428, but the H200 NVL has no corresponding scores in those APIs, so no direct comparison is possible there.

What the data shows instead is a division by class and purpose. The H200 NVL sits at the absolute top of the database's percentile ranking, achieving a perfect 100th percentile versus all GPUs. The W6600, by contrast, sits at the 92nd percentile, a strong result for a workstation card but nowhere near the H200 NVL's territory. The use-case split is therefore not about which card wins specific tests, it is about which card belongs in which environment. The H200 NVL is a server accelerator with no display outputs, designed for compute workloads where raw throughput matters above all else. The W6600 is a professional workstation GPU with four DisplayPort 1.4a outputs, designed for interactive workflows where rendering to a screen is part of the job.

The database also records the H200 NVL's average benchmark score as 334,891, which matches its single OpenCL result. The W6600's average benchmark score is 81,995, which is an average of its three recorded scores. That average places the W6600 in a completely different performance tier, roughly a quarter of the H200 NVL's average, and the nearest rival comparisons reinforce this separation.

Architecture Differences

The two cards come from different manufacturers, different architectures, and different process nodes. The NVIDIA H200 NVL uses the GH100 chip built on the Hopper architecture, fabricated by TSMC on a 5 nm process. The AMD Radeon PRO W6600 uses the Navi 23 chip built on RDNA 2.0, also fabricated by TSMC but on a 7 nm process. The process node difference alone explains a significant part of the performance and efficiency gap.

The transistor counts are in different weight classes entirely. The H200 NVL packs 80,000 million transistors onto a die of 814 mm², for a transistor density of 98.3 million per square millimeter. The W6600 has 11,060 million transistors on a 237 mm² die, for a density of 46.7 million per square millimeter. The H200 NVL has more than seven times the transistor count and more than three times the die area.

Memory architecture is where the two diverge most sharply. The H200 NVL carries 141 GB of HBM3e memory on a 6144-bit bus, delivering 4.89 TB/s of bandwidth. The W6600 has 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s. That is a 21.8x difference in memory capacity and a 21.8x difference in memory bandwidth, both of which are critical for large compute workloads. The H200 NVL's memory clock is listed at 1593 MHz with 6.4 Gbps effective, while the W6600's memory runs at 1750 MHz with 14 Gbps effective, but the bus width difference dwarfs any clock speed advantage.

The compute units also differ in kind. The H200 NVL has 16,896 shading units, 528 TMUs, 24 ROPs, and 528 tensor cores. The W6600 has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. The H200 NVL has no listed RT cores but has tensor cores, reflecting its AI and compute focus. The W6600 has RT cores but no tensor cores, reflecting its graphics and workstation focus. The H200 NVL's FP32 throughput is 60.32 TFLOPS, its FP16 throughput is 120.6 TFLOPS, and its texture rate is 942.5 GTexel/s. The W6600's FP32 throughput is 9.247 TFLOPS, its FP16 throughput is 18.49 TFLOPS, and its texture rate is 289.0 GTexel/s. The pixel rates tell a different story, the H200 NVL manages 42.84 GPixel/s while the W6600 manages 165.1 GPixel/s, a rare case where the workstation card leads, reflecting its graphics-oriented ROP configuration.

Head-to-Head Benchmarks

The only directly comparable benchmark in the database is Geekbench OpenCL. The H200 NVL scores 334,891, and the W6600 scores 73,514. The delta is 355.5% in favor of the H200 NVL. This is not a marginal win or a close contest, it is a dominant result that places the two cards in entirely different performance strata.

To put that score into context, the H200 NVL's nearest rivals in the database are all NVIDIA and AMD data center parts. The NVIDIA B200 scores 345,482, which is 3.1% above the H200 NVL. The AMD Instinct MI300X scores 317,994, which is 5.3% below. The NVIDIA B300 SXM6 AC scores 369,831, which is 9.4% above. The NVIDIA L40S scores 295,763, which is 13.2% below. The H200 NVL is therefore not just ahead of the W6600, it is competing with the fastest accelerators in the database, and it holds its own against all of them.

The W6600's nearest rivals operate in a completely different performance band. The AMD Radeon Pro Vega 64X scores 80,959, which is 1.3% above the W6600. The NVIDIA GeForce RTX 5090 scores 79,842, which is 2.7% above. The NVIDIA Tesla P100 PCIe 16 GB scores 79,605, which is 3.0% above. The NVIDIA Tesla P100 PCIe 12 GB scores 79,396, which is 3.3% above. The W6600's rivals are all within a few percentage points of its score, showing that it is competitive within its own tier, just not against the H200 NVL.

The H200 NVL's OpenCL score is more than four times the W6600's OpenCL score. Stated precisely, the H200 NVL delivers 355.5% more performance in this test. The W6600's additional benchmark results, Metal at 94,042 and Vulkan at 78,428, are higher than its OpenCL score but still far below the H200 NVL's single OpenCL result. Even the W6600's best recorded score, the Metal result at 94,042, is less than a third of the H200 NVL's OpenCL score.

FAQ

Q: Which card has the higher OpenCL benchmark score?

A: The NVIDIA H200 NVL scores 334,891 in Geekbench OpenCL, while the AMD Radeon PRO W6600 scores 73,514. The H200 NVL leads by 355.5%.

Q: How does the memory capacity compare between the two cards?

A: The NVIDIA H200 NVL has 141 GB of HBM3e memory on a 6144-bit bus with 4.89 TB/s bandwidth. The AMD Radeon PRO W6600 has 8 GB of GDDR6 memory on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Can the NVIDIA H200 NVL drive displays?

A: No. The H200 NVL has no display outputs. The AMD Radeon PRO W6600 has 4x DisplayPort 1.4a outputs.

Q: What is the process node difference between the two cards?

A: The NVIDIA H200 NVL uses a 5 nm TSMC process with 80,000 million transistors on an 814 mm² die. The AMD Radeon PRO W6600 uses a 7 nm TSMC process with 11,060 million transistors on a 237 mm² die.

Q: Which card supports ray tracing?

A: The AMD Radeon PRO W6600 has 28 ray tracing cores. The NVIDIA H200 NVL has no listed RT cores but includes 528 tensor cores instead.

Q: What is the power consumption difference?

A: The NVIDIA H200 NVL has a TDP of 600 W with a suggested PSU rating of 1000 W and an 8-pin EPS connector. The AMD Radeon PRO W6600 has a TDP of 100 W with a suggested PSU rating of 300 W and a 1x 6-pin connector.

The Verdict

The data leads to a straightforward conclusion. The NVIDIA H200 NVL is the clear winner in raw compute performance, and there is no recorded benchmark where the AMD Radeon PRO W6600 beats it. The OpenCL result, a 355.5% advantage for the H200 NVL, is decisive. Anyone choosing between these two cards for compute workloads should select the H200 NVL without hesitation.

However, the verdict is not simply about performance. The H200 NVL has no display outputs, which means it cannot serve as a workstation card for interactive graphics work. The W6600 has four DisplayPort 1.4a outputs, supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and has a single-slot design with a 100 W TDP. The H200 NVL lists no API support in the database, with DirectX, OpenGL, and Vulkan all marked as N/A. For a professional workstation user who needs to render to a screen, the W6600 is the functional choice despite its lower scores.

The personality of each card is also different. The H200 NVL sits at the 100th percentile in the database, alongside the fastest accelerators ever recorded, and its nearest rivals are the NVIDIA B200, AMD Instinct MI300X, NVIDIA B300 SXM6 AC, and NVIDIA L40S. The W6600 sits at the 92nd percentile, a respectable position, but its nearest rivals are the Radeon Pro Vega 64X, GeForce RTX 5090, and Tesla P100 variants. The H200 NVL belongs in a server rack, the W6600 belongs on a workstation desk.

The production status also tells a story. The H200 NVL is listed as Active, while the W6600 is End-of-life. The H200 NVL was released in November 2024, while the W6600 was released in June 2021. The H200 NVL has a successor in Server Blackwell, while the W6600 has no listed successor. The H200 NVL is the current generation, the W6600 is a previous generation part.

For compute density, memory bandwidth, and raw throughput, the H200 NVL is the only rational choice. For a workstation with display requirements, the W6600 is the only functional choice. The data does not support any other conclusion.

Specification Differences

The two cards differ in nearly every specification field. The NVIDIA H200 NVL uses the GH100 chip on the Hopper architecture with a 5 nm process, while the AMD Radeon PRO W6600 uses the Navi 23 chip on RDNA 2.0 with a 7 nm process. The H200 NVL has 80,000 million transistors on an 814 mm² die, while the W6600 has 11,060 million transistors on a 237 mm² die.

The clock speeds differ in direction. The H200 NVL has a base clock of 1365 MHz and a boost clock of 1785 MHz, while the W6600 has a higher base clock of 2331 MHz and a higher boost clock of 2580 MHz. Memory clocks are 1593 MHz with 6.4 Gbps effective for the H200 NVL and 1750 MHz with 14 Gbps effective for the W6600.

Memory is the largest differentiator. The H200 NVL has 141 GB of HBM3e on a 6144-bit bus with 4.89 TB/s bandwidth. The W6600 has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

The compute configurations are: H200 NVL with 16,896 shading units, 528 TMUs, 24 ROPs, 528 tensor cores, and no RT cores. The W6600 with 1,792 shading units, 112 TMUs, 64 ROPs, 28 RT cores, and no tensor cores.

The throughput figures favor the H200 NVL in most categories: 60.32 TFLOPS FP32 versus 9.247 TFLOPS, 120.6 TFLOPS FP16 versus 18.49 TFLOPS, 942.5 GTexel/s versus 289.0 GTexel/s. The W6600 leads in pixel rate at 165.1 GPixel/s versus 42.84 GPixel/s.

Power and physical specifications differ as well. The H200 NVL has a 600 W TDP with an 8-pin EPS connector and a suggested PSU rating of 1000 W, in a dual-slot design. The W6600 has a 100 W TDP with a 1x 6-pin connector and a suggested PSU rating of 300 W in a single-slot design. The H200 NVL uses PCIe 5.0 x16 and has no display outputs. The W6600 uses PCIe 4.0 x8 and has 4x DisplayPort 1.4a outputs. The H200 NVL supports DirectX N/A, OpenGL N/A, and Vulkan N/A; the W6600 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The H200 NVL is 267 mm long; the W6600 is 241 mm long. The H200 NVL is Active in production status; the W6600 is End-of-life. The H200 NVL launched in November 2024; the W6600 launched in June 2021. The W6600 has a launch MSRP of 649 USD; the H200 NVL has no launch MSRP field.