AMD Radeon PRO W6600 vs NVIDIA GB10 Comparison

NVIDIA GB10 and AMD Radeon PRO W6600 occupy different tiers of the GPU landscape, as evidenced by their average benchmark scores. The GB10 posts an average score of 117,393, placing it in the 95th percentile of all GPUs, while the W6600 averages 81,995, sitting in the 92nd percentile. Despite the close percentile ranking, the raw performance gap is substantial, with the GB10 leading by 43.2% in average score. The data shows a clear hierarchy, but the specifics of each benchmark and workload reveal where each card can still find a role.

Head-to-Head Benchmarks

The head-to-head results are decisively in favor of the NVIDIA GB10. In the Geekbench OpenCL test, the GB10 scores 120,137 against the W6600's 73,514, a delta of 63.4%. This is the largest margin between the two cards in any shared test. The GB10’s lead in OpenCL is not just a marginal advantage; it is a dominant one, nearly two-thirds faster than the AMD card. This suggests that for compute-heavy tasks that leverage OpenCL, the GB10 is in a completely different performance class.

The Vulkan results tell a similar story, though with a slightly narrower gap. The GB10 scores 114,648, while the W6600 manages 78,428, resulting in a 46.2% delta. While still a massive win for the GB10, the smaller gap in Vulkan suggests that the W6600’s architecture is relatively more competitive in this API. The RDNA 2.0 architecture in the W6600, with its support for Vulkan 1.4, may be better optimized for this workload than for OpenCL, yet it still cannot overcome the GB10’s raw compute power.

The average benchmark scores reinforce this trend. The GB10’s average of 117,393 is derived from its two listed scores, while the W6600’s 81,995 average is pulled from three benchmarks, including a Metal score of 94,042 where it performs notably better than its OpenCL result. Even with that stronger Metal showing included, the W6600’s average remains far behind. The GB10’s nearest rival is the AMD Radeon PRO W7700, which scores 118,976, a mere 1.3% above the GB10. In contrast, the W6600’s closest competitor is the AMD Radeon Pro Vega 64X at 80,959, just 1.3% below the W6600. This places the two cards in entirely different performance strata, with the GB10 competing against workstation-class GPUs like the NVIDIA RTX 4000 SFF Ada Generation (117,088, 0.3% behind) and the W6600 fighting for space with older high-end cards like the NVIDIA Tesla P100.

Where Each One Wins

The NVIDIA GB10 wins outright in every shared benchmark. It is faster in OpenCL by 63.4% and in Vulkan by 46.2%. For any workload that relies on these APIs, the GB10 is the unequivocal choice. The data suggests that the GB10’s massive lead in OpenCL makes it particularly suited for general-purpose GPU compute, scientific simulation, and any task that can be parallelized across its 6,144 shading units. Its Vulkan performance, while relatively closer, still provides a commanding edge for graphics rendering tasks that use that API.

The AMD Radeon PRO W6600, while losing all shared benchmarks, does have a specific advantage in one area: the Metal API. Its Geekbench Metal score of 94,042 is its best result and is not a test the GB10 has taken. This indicates that for users locked into an Apple-centric workflow that heavily utilizes Metal, the W6600 may offer a competitive experience, though its absolute performance is still lower than the GB10’s scores in other APIs. Additionally, the W6600’s wins are not in performance but in efficiency and form factor. Its 100 W TDP is significantly lower than the GB10’s 140 W, and its single-slot design with a 6-pin connector makes it far easier to integrate into existing systems than the GB10’s integrated IGP form factor with no power connectors. For workloads that are not compute-bound but require multiple display outputs, the W6600’s 4x DisplayPort 1.4a outputs are a distinct advantage over the GB10’s single HDMI port.

Architecture Differences

The architectural divide between these two GPUs is stark. The NVIDIA GB10 is built on the Blackwell 2.0 architecture, fabricated on a 5 nm process at TSMC, with a die size of 382 mm². In contrast, the AMD Radeon PRO W6600 uses the RDNA 2.0 architecture on a 7 nm process, also from TSMC, with a smaller 237 mm² die but a disclosed transistor count of 11,060 million, yielding a density of 46.7M transistors per mm². The GB10’s transistor count is listed as "unknown," but its larger die on a more advanced node suggests a significant transistor budget dedicated to its 384 tensor cores and 48 RT cores.

The memory subsystems are fundamentally different. The GB10 features 128 GB of LPDDR5X memory on a 256-bit bus, delivering 273.2 GB/s of bandwidth. The W6600, by contrast, has 8 GB of GDDR6 memory on a 128-bit bus, providing 224.0 GB/s. The GB10’s memory capacity is 16 times larger, which is critical for large dataset workloads, though its bandwidth advantage is a more modest 22%. The GB10’s clock speeds are lower (1,665 MHz base, 2,418 MHz boost) compared to the W6600 (2,331 MHz base, 2,580 MHz boost), yet the GB10 compensates with far more compute units. The GB10 has 6,144 shading units, 384 TMUs, and 48 ROPs, while the W6600 has 1,792 shading units, 112 TMUs, and 64 ROPs. This results in a massive FP32 throughput advantage for the GB10: 29.71 TFLOPS versus 9.247 TFLOPS.

The feature sets diverge on acceleration hardware. The GB10 includes 384 tensor cores, which the W6600 lacks entirely. The GB10 also has 48 RT cores versus the W6600’s 28. In terms of API support, the W6600 is more conventional, supporting DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The GB10 lists its DirectX, OpenGL, and Vulkan support as "N/A," indicating it is not designed for traditional gaming or general graphics APIs but rather for compute-focused server workloads. The GB10’s bus interface is PCIe 5.0 x16, while the W6600 uses PCIe 4.0 x8, doubling the potential data transfer lanes for the NVIDIA card.

FAQ

Q: Which card has a higher average benchmark score?

A: The NVIDIA GB10 has an average benchmark score of 117,393, which is 43.2% higher than the AMD Radeon PRO W6600's average of 81,995.

Q: How much faster is the NVIDIA GB10 in the OpenCL benchmark?

A: The GB10 scores 120,137 in Geekbench OpenCL, while the W6600 scores 73,514, giving the GB10 a 63.4% lead.

Q: Does the AMD Radeon PRO W6600 win any benchmark against the GB10?

A: No, in the head-to-head benchmarks listed, the W6600 wins zero tests. The GB10 wins both the OpenCL and Vulkan tests.

Q: What is the memory capacity difference between the two cards?

A: The NVIDIA GB10 has 128 GB of LPDDR5X memory, while the AMD Radeon PRO W6600 has 8 GB of GDDR6 memory.

Q: Are there any APIs supported by the W6600 but not by the GB10?

A: Yes, the W6600 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The GB10 lists its support for these APIs as "N/A."

Q: What are the power consumption figures for each card?

A: The NVIDIA GB10 has a TDP of 140 W, while the AMD Radeon PRO W6600 has a lower TDP of 100 W.

Specification Differences

The two cards differ significantly across nearly all core specifications. The NVIDIA GB10 is built on a 5 nm process, while the AMD Radeon PRO W6600 uses a 7 nm process. The GB10’s die size is 382 mm², compared to the W6600’s 237 mm². The GB10 has a base clock of 1,665 MHz and a boost clock of 2,418 MHz, whereas the W6600 has a base clock of 2,331 MHz and a boost clock of 2,580 MHz. Memory configurations are vastly different: the GB10 has 128 GB of LPDDR5X with a 256-bit bus and 273.2 GB/s bandwidth, while the W6600 has 8 GB of GDDR6 with a 128-bit bus and 224.0 GB/s bandwidth.

The compute unit counts show the GB10’s scale. It has 6,144 shading units, 384 TMUs, and 48 ROPs, while the W6600 has 1,792 shading units, 112 TMUs, and 64 ROPs. The GB10 also includes 48 RT cores and 384 tensor cores; the W6600 includes 28 RT cores and no tensor cores. The GB10’s FP32 performance is 29.71 TFLOPS, and its FP16 performance is 29.71 TFLOPS (1:1 ratio). The W6600’s FP32 performance is 9.247 TFLOPS, with FP16 at 18.49 TFLOPS (2:1 ratio). The GB10 has a pixel rate of 116.1 GPixel/s and a texture rate of 928.5 GTexel/s, while the W6600 has a pixel rate of 165.1 GPixel/s and a texture rate of 289.0 GTexel/s.

Power and physical specifications also differ. The GB10 has a 140 W TDP, is an integrated IGP form factor, has no power connectors, and uses a PCIe 5.0 x16 interface. The W6600 has a 100 W TDP, is a single-slot card, requires a 1x 6-pin power connector, and uses a PCIe 4.0 x8 interface. Display outputs are 1x HDMI for the GB10 and 4x DisplayPort 1.4a for the W6600. The GB10 is 150 mm long, while the W6600 is 241 mm long. The GB10’s production status is "Active," and it was released in 2025, while the W6600 is "End-of-life" and was released in 2021. The GB10’s launch MSRP is 3,999 USD, and the W6600’s launch MSRP is 649 USD.

The Verdict

The data is unambiguous for raw performance: the NVIDIA GB10 is the superior card. It wins both shared benchmarks by wide margins, has more than three times the FP32 throughput, offers 16 times the memory capacity, and includes dedicated tensor cores. Its performance percentile of 95 places it among the top tier of all GPUs, competing directly with cards like the NVIDIA RTX 4000 SFF Ada Generation and AMD Radeon PRO W7700. Anyone whose workload is compute-intensive and can utilize OpenCL or Vulkan should choose the GB10, provided the lack of standard graphics API support is not a barrier.

The AMD Radeon PRO W6600, while outclassed in compute, still has a purpose. Its lower 100 W TDP and single-slot design make it a candidate for power-constrained or space-limited systems. Its 4x DisplayPort outputs and support for standard graphics APIs like DirectX 12 Ultimate and OpenGL 4.6 make it a more flexible option for traditional workstation graphics tasks. The W6600’s strong Metal score of 94,042 suggests it can handle Apple-ecosystem workflows effectively. The verdict is not about value but about fit: for compute density and raw number-crunching, the GB10 is the clear winner; for a compact, low-power, multi-display graphics card with broad API support, the W6600 remains a viable, though end-of-life, option.