AMD Radeon Pro W6600X vs NVIDIA B200 Comparison

Where Each One Wins

The NVIDIA B200 and AMD Radeon Pro W6600X occupy entirely different performance strata, and the data reflects that clearly. The B200 sits at the absolute top of the database's GPU ranking, holding a perfect 100th percentile among all GPUs. Its recorded Geekbench OpenCL score of 345,482 places it in a class shared only by the most recent server accelerators. The W6600X, by contrast, reaches the 94th percentile with a Geekbench Metal score of 107,342, placing it among capable workstation-class parts but nowhere near the summit.

The B200 wins on raw compute density. Its FP32 throughput of 74.45 TFLOPS is roughly 7.3 times the W6600X's 10.15 TFLOPS. In FP16 work, the gap widens dramatically: the B200 delivers 1,191.2 TFLOPS using a 16:1 ratio, while the W6600X produces 20.31 TFLOPS at a 2:1 ratio. This makes the B200 the clear choice for AI training, large-scale inference, and scientific simulation where mixed-precision tensor operations dominate. The W6600X, with its RDNA 2.0 architecture and dedicated 32 ray accelerators, is better positioned for graphics-focused workloads such as rendering, ray tracing, and CAD visualization, though its raw numbers are far lower.

The W6600X wins on efficiency and practicality. Its 120 W TDP is a fraction of the B200's 1000 W, and its suggested power supply of 300 W versus the B200's 1400 W reflects a fundamentally different deployment scenario. The W6600X also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the B200 lists no API support in the database. For a Mac Pro workstation, the W6600X's Apple MPX interface and dual-slot form factor make it a drop-in component, whereas the B200 is an SXM module with no display outputs and no conventional graphics API pathway.

In short, the B200 is a compute monster for server racks, and the W6600X is a workstation card for graphics professionals. The B200 wins every performance benchmark by a wide margin; the W6600X wins on power draw, API compatibility, and physical integration.

FAQ

Q: How much faster is the NVIDIA B200 than the AMD Radeon Pro W6600X in raw compute?

A: The B200 scores 345,482 in Geekbench OpenCL, while the W6600X scores 107,342 in Geekbench Metal. The B200's FP32 throughput is 74.45 TFLOPS versus 10.15 TFLOPS for the W6600X, and its FP16 output is 1,191.2 TFLOPS versus 20.31 TFLOPS.

Q: Which GPU has more memory and bandwidth?

A: The B200 features 90 GB of HBM3e memory on a 4096-bit bus, delivering 4.10 TB/s of bandwidth. The W6600X has 8 GB of GDDR6 on a 128-bit bus, providing 256.0 GB/s. The B200's bandwidth advantage is approximately 16-fold.

Q: What is the power consumption difference?

A: The B200 has a TDP of 1000 W and requires a 1400 W power supply. The W6600X has a TDP of 120 W and a suggested power supply of 300 W. The B200 consumes over eight times the power of the W6600X.

Q: Can either card be used in a standard desktop PC?

A: No. The B200 is an SXM module with no display outputs and uses a PCIe 5.0 x16 bus. The W6600X uses an Apple MPX interface with no display outputs and is designed for Mac Pro systems. Neither card connects to a typical consumer motherboard or monitor.

Q: How do the nearest rivals compare to each card?

A: The B200 is 3.2% ahead of the NVIDIA H200 NVL, 8.6% ahead of the AMD Instinct MI300X, and 16.8% ahead of the NVIDIA L40S. It trails the NVIDIA B300 SXM6 AC by 6.6%. The W6600X is 0.6% ahead of the AMD Radeon Pro Vega II Duo, 5.4% ahead of the NVIDIA Quadro RTX 6000, and trails the AMD Radeon Pro Vega II by 2.1% and the AMD Radeon PRO W7900 by 3.1%.

Q: What is the production status of each card?

A: The NVIDIA B200 is listed as Active production and belongs to the Server Blackwell generation. The AMD Radeon Pro W6600X is End-of-life, released on 2021-08-02, and belongs to the Radeon Pro Mac (Navi II Series) generation.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between these two GPUs, and they run different benchmark suites (OpenCL for the B200, Metal for the W6600X). However, the recorded scores and specifications allow for meaningful comparison.

The B200's Geekbench OpenCL score of 345,482 is 3.2% higher than the NVIDIA H200 NVL's 334,891 and 8.6% higher than the AMD Instinct MI300X's 317,994. These are the B200's closest competitors, and the margins show that the B200 is at the top of the current server accelerator hierarchy. It is 16.8% ahead of the NVIDIA L40S, a popular workstation card, and only the NVIDIA B300 SXM6 AC surpasses it, by 6.6%. This places the B200 in a narrow band of elite accelerators where even small percentage differences represent significant absolute performance gaps.

The W6600X's Geekbench Metal score of 107,342 sits in a much tighter competitive cluster. It is 0.6% above the AMD Radeon Pro Vega II Duo's 106,750, 5.4% above the NVIDIA Quadro RTX 6000's 101,872, and 2.1% below the AMD Radeon Pro Vega II's 109,617. The AMD Radeon PRO W7900 leads this group at 110,725, putting the W6600X 3.1% behind. These sub-5% deltas indicate that the W6600X is a solid mid-pack workstation card, neither dominating nor being dominated by its peers.

In direct specification terms, the B200 crushes the W6600X across the board. The B200's FP32 throughput of 74.45 TFLOPS is 7.3 times the W6600X's 10.15 TFLOPS. The B200's texture rate of 1,163.3 GTexel/s is 3.7 times the W6600X's 317.3 GTexel/s. The B200's memory bandwidth of 4.10 TB/s is 16 times the W6600X's 256.0 GB/s. Even the B200's pixel rate of 47.16 GPixel/s, which is lower than the W6600X's 158.7 GPixel/s, reflects the B200's compute-first design: it has only 24 ROPs versus the W6600X's 64, a deliberate trade-off since the B200 is not designed for rasterization.

The W6600X counters with higher clocks (boost 2479 MHz versus 1965 MHz), a smaller die (237 mm² versus no listed size), and a more modest transistor count (11,060 million versus 104,000 million). These differences highlight the W6600X's efficiency-focused design, but they do not close the compute gap. The B200's 18,944 shading units dwarf the W6600X's 2,048, and the B200's 592 tensor cores have no equivalent in the W6600X, which lacks tensor cores entirely.

Specification Differences

The two GPUs differ in nearly every measurable specification. The B200 uses a GB100 chip built on a 5 nm process at TSMC, containing 104,000 million transistors. The W6600X uses a Navi 23 chip on a 7 nm process, also at TSMC, with 11,060 million transistors and a die size of 237 mm². The transistor density of the W6600X is recorded as 46.7M per mm²; the B200's die size is not listed, so density cannot be calculated.

Clock speeds diverge sharply. The B200 has a base clock of 700 MHz and a boost clock of 1965 MHz. The W6600X runs at 2068 MHz base and 2479 MHz boost. The B200's memory clock is 2000 MHz with 8 Gbps effective, while the W6600X also uses 2000 MHz but achieves 16 Gbps effective, reflecting the different memory types.

Memory configuration is a major split. The B200 has 90 GB of HBM3e on a 4096-bit bus, yielding 4.10 TB/s bandwidth. The W6600X has 8 GB of GDDR6 on a 128-bit bus, yielding 256.0 GB/s. The B200's memory capacity is over 11 times larger, and its bus width is 32 times wider.

Compute units also differ. The B200 has 18,944 shading units, 592 TMUs, and 24 ROPs. It has 592 tensor cores and no listed ray tracing cores. The W6600X has 2,048 shading units, 128 TMUs, and 64 ROPs. It has 32 ray accelerators and no tensor cores. The pixel rate favors the W6600X at 158.7 GPixel/s versus the B200's 47.16 GPixel/s, but the texture rate favors the B200 at 1,163.3 GTexel/s versus 317.3 GTexel/s.

Power and physical design are opposites. The B200 is an SXM module with a 1000 W TDP and a 1400 W suggested power supply, using a PCIe 5.0 x16 bus. The W6600X is a dual-slot card with a 120 W TDP and a 300 W suggested power supply, using an Apple MPX bus. Both have no display outputs. The B200 supports no listed graphics APIs, while the W6600X supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Production status and release timing differ as well. The B200 is Active and has no release date listed, while the W6600X is End-of-life and was released on 2021-08-02. The B200's predecessor is Server Hopper and its successor is Server Rubin. The W6600X has no listed predecessor or successor.

Architecture Differences

The architectural gap between these two GPUs is generational and fundamental. The B200 is built on NVIDIA's Blackwell architecture, designed for server-scale AI and high-performance computing. It uses a 5 nm process and packs 104,000 million transistors into an SXM module. The W6600X uses AMD's RDNA 2.0 architecture, a graphics-first design fabricated on a 7 nm process with 11,060 million transistors.

The B200's Blackwell architecture emphasizes tensor operations. Its 592 tensor cores drive FP16 performance of 1,191.2 TFLOPS at a 16:1 ratio, a figure that assumes heavy tensor utilization. The W6600X's RDNA 2.0 architecture has no tensor cores and achieves 20.31 TFLOPS FP16 at a 2:1 ratio, which is a conventional compute ratio rather than a tensor-boosted one. This is the single most important architectural difference: the B200 is built to accelerate neural networks, while the W6600X is built to accelerate graphics pipelines.

The W6600X's RDNA 2.0 design includes 32 ray accelerators, which handle hardware-accelerated ray tracing. The B200 lists no ray tracing cores, reinforcing its role as a compute device rather than a rendering device. The B200's 24 ROPs are minimal, suggesting that pixel output is not a priority, while the W6600X's 64 ROPs support rasterization workloads. The W6600X's higher pixel rate of 158.7 GPixel/s versus the B200's 47.16 GPixel/s directly reflects this design intent.

Memory architecture also differs fundamentally. The B200 uses HBM3e on a 4096-bit bus, which is a high-bandwidth, high-capacity configuration optimized for massive datasets. The W6600X uses GDDR6 on a 128-bit bus, a more cost-effective and power-efficient solution for workstation graphics. The B200's 4.10 TB/s bandwidth is necessary for feeding its tensor cores, while the W6600X's 256.0 GB/s is sufficient for its shading units and ray accelerators.

Process technology and transistor budget tell the same story. The B200's 104,000 million transistors on a 5 nm node represent the current-generation of fabrication, enabling its massive compute array. The W6600X's 11,060 million transistors on a 7 nm node are roughly one-tenth of the B200's count, and its die size of 237 mm² is modest by comparison. The B200's power envelope of 1000 W is a direct consequence of its transistor count and clock strategy, while the W6600X's 120 W TDP keeps it within workstation thermal limits.

The B200 is a successor to Server Hopper and is followed by Server Rubin, placing it in a clear product lineage of NVIDIA data center accelerators. The W6600X belongs to the Radeon Pro Mac series and is now end-of-life, with no successor listed. This lifecycle difference underscores that the B200 represents the current frontier of compute hardware, while the W6600X is a legacy product from an earlier generation of AMD graphics architecture.