AMD Radeon PRO W6600 vs AMD Radeon Pro WX 9100 Comparison

AMD Radeon PRO W6600 vs AMD Radeon Pro WX 9100

The benchmark data presents a clear generational shift, with the newer AMD Radeon PRO W6600 decisively outperforming the older AMD Radeon Pro WX 9100 across all recorded tests. The W6600, built on RDNA 2.0, wins every head-to-head comparison, with its largest margin coming in the Vulkan test, where it leads by 43.3%. The WX 9100, a GCN 5.0 part from an earlier era, retains advantages in raw memory capacity and bandwidth, but the performance scores show that architectural efficiency trumps those older specifications.

Head-to-Head Benchmarks

The most striking result is in the geekbench_vulkan test. The Radeon PRO W6600 scores 78,428, while the Radeon Pro WX 9100 manages only 54,711. This 43.3% delta is the single biggest gap between the two cards in any workload. Vulkan is a low-level API that rewards modern architecture and driver optimization, and the data reflects that the W6600's RDNA 2.0 design handles this API far more efficiently than the WX 9100's GCN 5.0 implementation. This is not a marginal win; it is a dominant one.

In geekbench_metal, the W6600 again takes a commanding lead. Its score of 94,042 compares to the WX 9100's 71,319, a difference of 31.9%. Metal is Apple's graphics API, and its performance often correlates with how well the hardware's shading units and memory subsystem are utilized. The W6600's higher clock speeds — a 2331 MHz base and 2580 MHz boost versus the WX 9100's 1200 MHz base and 1500 MHz boost — likely contribute significantly to this outcome. The WX 9100's higher theoretical FP32 throughput of 12.29 TFLOPS does not translate into a win here, underscoring that raw compute numbers do not always predict real-world API performance.

The closest contest is in geekbench_opencl, where the W6600 scores 73,514 against the WX 9100's 66,605. The 10.4% delta is still a clear victory for the W6600, but it is a narrower margin than the other two tests. OpenCL is a more mature and widely supported API, and the WX 9100's larger memory bus — 2048 bit versus 128 bit — may help it stay competitive in memory-heavy OpenCL workloads. Nevertheless, the W6600's superior per-clock efficiency and its 9.247 TFLOPS FP32 rating prove sufficient to secure the win.

Across all three benchmarks, the W6600's average benchmark score of 81,995 places it in the 92nd percentile of all GPUs, while the WX 9100's average of 64,212 lands in the 89th percentile. The difference in percentile ranking, though small in absolute terms, masks a 27.7% advantage in average score for the W6600. When compared to their respective nearest rivals, the W6600 sits just 1.3% above the AMD Radeon Pro Vega 64X and 2.7% above the NVIDIA GeForce RTX 5090, showing it is competitive with top-tier hardware. The WX 9100, by contrast, is only 0.6% above the NVIDIA CMP 30HX and 0.8% above the AMD Radeon Pro Vega 56, indicating it is clustered with mid-range performers.

FAQ

Q: Which card wins the most benchmarks?

A: The AMD Radeon PRO W6600 wins all three head-to-head tests. It takes geekbench_metal with a 31.9% lead, geekbench_opencl with a 10.4% lead, and geekbench_vulkan with a 43.3% lead. The WX 9100 records zero wins in the comparison data.

Q: How large is the performance gap in the Vulkan test?

A: The gap is substantial. The W6600 scores 78,428 in geekbench_vulkan, while the WX 9100 scores 54,711. This represents a 43.3% difference, making it the largest margin of victory for the W6600 across any benchmark.

Q: Does the WX 9100 have any advantages in memory specifications?

A: Yes, the WX 9100 has a significantly larger memory configuration. It offers 16 GB of HBM2 memory with a 2048-bit bus width and 483.8 GB/s of bandwidth. The W6600 has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: What are the average benchmark scores and percentile rankings?

A: The W6600 has an average benchmark score of 81,995 and ranks in the 92nd percentile of all GPUs. The WX 9100 has an average score of 64,212 and ranks in the 89th percentile.

Q: How do the cards compare to their nearest rivals?

A: The W6600 is 1.3% ahead of the AMD Radeon Pro Vega 64X, which has an average score of 80,959. The WX 9100 is only 0.6% ahead of the NVIDIA CMP 30HX, which scores 63,842.

Q: Which card has a higher boost clock speed?

A: The W6600 has a substantially higher boost clock of 2580 MHz compared to the WX 9100's 1500 MHz. The W6600's base clock of 2331 MHz is also higher than the WX 9100's 1200 MHz base.

The Verdict

The data is unambiguous: the AMD Radeon PRO W6600 is the superior graphics card for compute performance. It wins every benchmark category, with margins ranging from 10.4% in OpenCL to 43.3% in Vulkan. For users whose workloads rely on Metal, Vulkan, or OpenCL performance, the W6600 is the clear choice. Its 92nd percentile ranking and average score of 81,995 place it in a higher performance tier than the WX 9100, which sits at the 89th percentile with an average of 64,212.

However, the WX 9100 is not without its merits. Its 16 GB of HBM2 memory with 483.8 GB/s of bandwidth is double the capacity and more than double the bandwidth of the W6600's 8 GB GDDR6 configuration. For tasks that are heavily memory-bound, such as rendering very large datasets or training certain machine learning models, the WX 9100's memory subsystem could be a deciding factor. The data does not include memory-specific benchmarks, but the specification difference is significant.

For most general-purpose compute and graphics workloads, the W6600's architectural efficiency and clock speed advantage deliver better results. It achieves higher scores despite having fewer shading units (1792 versus 4096) and lower FP32 throughput (9.247 TFLOPS versus 12.29 TFLOPS). This indicates that the RDNA 2.0 architecture extracts more usable performance per unit of theoretical compute. For users who require the highest possible memory capacity and bandwidth, the WX 9100 remains relevant. For everyone else, the W6600 is the data-backed winner.

Specification Differences

The two cards differ across nearly every core specification. The W6600 uses a 7 nm process node from TSMC, while the WX 9100 uses a 14 nm node from GlobalFoundries. The W6600's die size is 237 mm² with 11,060 million transistors, whereas the WX 9100's die is 495 mm² with 12,500 million transistors. This results in a transistor density of 46.7M per mm² for the W6600 versus 25.3M per mm² for the WX 9100.

Clock speeds differ dramatically: the W6600 runs at 2331 MHz base and 2580 MHz boost, while the WX 9100 runs at 1200 MHz base and 1500 MHz boost. Memory configurations are also divergent — the W6600 has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth, while the WX 9100 has 16 GB of HBM2 on a 2048-bit bus with 483.8 GB/s bandwidth.

The W6600 has 1792 shading units, 112 TMUs, and 64 ROPs, along with 28 ray tracing cores. The WX 9100 has 4096 shading units, 256 TMUs, and 64 ROPs, but no ray tracing cores. Pixel rates favor the W6600 at 165.1 GPixel/s versus 96.00 GPixel/s, while texture rates favor the WX 9100 at 384.0 GTexel/s versus 289.0 GTexel/s. FP32 performance is higher on the WX 9100 at 12.29 TFLOPS versus 9.247 TFLOPS, and FP16 performance is also higher at 24.58 TFLOPS versus 18.49 TFLOPS.

Power and physical specs differ as well. The W6600 has a 100 W TDP, is single-slot, uses a 1x 6-pin power connector, and requires a 300 W suggested PSU. The WX 9100 has a 230 W TDP, is dual-slot, uses a 1x 6-pin plus 1x 8-pin configuration, and requires a 550 W PSU. The W6600 measures 241 mm in length, while the WX 9100 is 267 mm long and 111 mm tall. The W6600 uses PCIe 4.0 x8, while the WX 9100 uses PCIe 3.0 x16. Display outputs are 4x DisplayPort 1.4a on the W6600 and 6x mini-DisplayPort 1.4a on the WX 9100. API support differs, with the W6600 supporting DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the WX 9100 supports DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6.

Architecture Differences

The architectural divide is fundamental. The W6600 is built on RDNA 2.0 with the Navi 23 chip, part of the Radeon Pro Navi (Navi II Series) generation. The WX 9100 is built on GCN 5.0 with the Vega 10 chip, part of the Radeon Pro Polaris (WX x100) generation. This represents a complete redesign of the GPU core, not just a minor revision.

The process technology difference is stark: the W6600 uses a 7 nm process from TSMC, while the WX 9100 uses a 14 nm process from GlobalFoundries. This allows the W6600 to pack 46.7 million transistors per square millimeter, nearly double the WX 9100's 25.3 million. The smaller node enables much higher clock speeds — 2580 MHz boost versus 1500 MHz — which is a primary driver of the W6600's performance wins.

The W6600's RDNA 2.0 architecture introduces dedicated ray tracing cores, which the WX 9100 lacks entirely. The W6600 has 28 such cores, enabling hardware-accelerated ray tracing that the GCN 5.0 architecture cannot perform. This is a significant feature difference for any workload that uses ray-traced rendering or effects.

Cache and memory architecture also reflect the generational change. The W6600 uses 8 GB of GDDR6 on a 128-bit bus, which is a more modern memory technology compared to the WX 9100's HBM2 on a 2048-bit bus. While the WX 9100 offers higher bandwidth (483.8 GB/s versus 224.0 GB/s), the W6600's memory operates at 1750 MHz (14 Gbps effective), which is a much faster per-pin transfer rate than the WX 9100's 945 MHz (1890 Mbps effective). The W6600's PCIe 4.0 x8 interface also provides double the per-lane bandwidth of the WX 9100's PCIe 3.0 x16, despite having fewer lanes.

The shader architecture differs in composition: the W6600 has 1792 shading units and 112 TMUs, while the WX 9100 has 4096 shading units and 256 TMUs. The WX 9100 has more of both, but the W6600's higher clocks and more efficient instruction scheduling in RDNA 2.0 compensate. The W6600's DirectX 12 Ultimate (12_2) support and Vulkan 1.4 API compatibility are newer than the WX 9100's DirectX 12 (12_1) and Vulkan 1.3, reflecting the newer architecture's support for modern graphics features.