AMD Radeon Pro WX 9100 vs AMD Radeon RX 6550M Comparison

Where Each One Wins

The recorded benchmark data splits cleanly between the two AMD parts, though the older workstation card takes every head-to-head win in the database. In Geekbench OpenCL, the AMD Radeon Pro WX 9100 scores 66,605 against 42,536 for the AMD Radeon RX 6550M, a 56.6% advantage. That is a commanding lead for compute-oriented workloads that lean on OpenCL, where the WX 9100's larger chip and wider memory subsystem dominate.

The Vulkan results narrow the gap considerably. The WX 9100 posts 54,711, while the RX 6550M trails at 50,867, a 7.6% difference. This suggests that in graphics-centric APIs, the newer RDNA 2.0 architecture closes much of the raw hardware deficit. The RX 6550M's higher clock speeds and modern feature set help it stay competitive in Vulkan, even though it ultimately loses that test as well.

Looking at the broader database context, the WX 9100 sits at the 89th percentile among all GPUs, with an average benchmark score of 64,212. Its nearest rivals include the NVIDIA CMP 30HX at 63,842 (0.6% behind), the AMD Radeon RX 9060 XT LP at 63,830 (0.6% behind), and the AMD Radeon RX 7600M at 63,775 (0.7% behind). The RX 6550M, by contrast, holds the 85th percentile with an average score of 46,702. Its nearest rivals are the Intel Arc A530M at 46,614 (0.2% behind), the AMD Radeon RX 5600M at 46,601 (0.2% behind), and the NVIDIA RTX A2000 at 46,043 (1.4% behind).

The use-case split is therefore straightforward: the WX 9100 is the choice for OpenCL-heavy compute tasks, where its 56.6% lead in that specific test is decisive. The RX 6550M, while behind in both recorded benchmarks, is far closer in Vulkan, making it a more reasonable option for graphics-oriented workloads that use that API. The data does not give the RX 6550M a single win, so any advantage it has must be inferred from the smaller delta in Vulkan rather than an outright victory.

Architecture Differences

The two GPUs come from different architectural generations entirely. The AMD Radeon Pro WX 9100 uses GCN 5.0, built on the Vega 10 chip at a 14 nm process from GlobalFoundries. The AMD Radeon RX 6550M uses RDNA 2.0, built on the Navi 24 chip at a 6 nm process from TSMC. This process shrink is substantial: the WX 9100 packs 12,500 million transistors on a 495 mm² die, while the RX 6550M fits 5,400 million transistors on just 107 mm². Transistor density tells the story of the newer node: the RX 6550M achieves 50.5M transistors per mm², versus 25.3M for the WX 9100.

The memory systems diverge sharply. The WX 9100 pairs 16 GB of HBM2 on a 2048-bit bus, yielding 483.8 GB/s of bandwidth. The RX 6550M uses 4 GB of GDDR6 on a 64-bit bus, delivering 144.0 GB/s. That is a 3.36x difference in bandwidth, which explains much of the OpenCL gap. The RX 6550M compensates with much higher clocks: a 2000 MHz base and 2840 MHz boost versus 1200 MHz base and 1500 MHz boost for the WX 9100. The RX 6550M also lists a 2560 MHz game clock, a figure the WX 9100 does not have.

Compute resources differ by design. The WX 9100 has 4096 shading units, 256 TMUs, and 64 ROPs. The RX 6550M has 1024 shading units, 64 TMUs, and 32 ROPs. The WX 9100 also carries 16 ray tracing cores on its newer architecture; the WX 9100 predates dedicated RT hardware and lists none. Pixel rate is nearly identical (96.00 GPixel/s for the WX 9100 versus 90.88 GPixel/s for the RX 6550M), but texture rate favors the older card heavily: 384.0 GTexel/s versus 181.8 GTexel/s. FP32 throughput is 12.29 TFLOPS against 5.816 TFLOPS, and FP16 is 24.58 TFLOPS versus 11.63 TFLOPS, both at a 2:1 ratio.

API support shows the generational leap. The RX 6550M supports DirectX 12 Ultimate (12_2), while the WX 9100 only reaches DirectX 12 (12_1). Both support OpenGL 4.6, but Vulkan differs: the RX 6550M lists Vulkan 1.4, the WX 9100 lists Vulkan 1.3. Power draw reflects the gulf in size: the WX 9100 is rated at 230 W with dual-slot cooling and a 1x 6-pin plus 1x 8-pin power connector, while the RX 6550M is an 80 W IGP with no power connectors and no suggested PSU listed.

FAQ

Q: Which GPU wins in OpenCL performance?

A: The AMD Radeon Pro WX 9100 scores 66,605 in Geekbench OpenCL, which is 56.6% ahead of the AMD Radeon RX 6550M's 42,536. This is the largest recorded performance gap between the two.

Q: How close is the Vulkan performance between the two?

A: In Geekbench Vulkan, the WX 9100 scores 54,711 versus 50,867 for the RX 6550M, a 7.6% difference. This is a much narrower margin than OpenCL, indicating the RX 6550M is comparatively stronger in Vulkan workloads.

Q: What are the memory capacities and types?

A: The WX 9100 has 16 GB of HBM2 on a 2048-bit bus with 483.8 GB/s bandwidth. The RX 6550M has 4 GB of GDDR6 on a 64-bit bus with 144.0 GB/s bandwidth.

Q: Which GPU has a higher boost clock?

A: The RX 6550M boosts to 2840 MHz, while the WX 9100 boosts to 1500 MHz. The RX 6550M also has a 2000 MHz base clock versus 1200 MHz for the WX 9100.

Q: Do both GPUs support ray tracing?

A: No. The RX 6550M includes 16 ray tracing cores as part of its RDNA 2.0 architecture. The WX 9100, based on GCN 5.0, lists no ray tracing cores.

Q: What is the transistor count and die size difference?

A: The WX 9100 has 12,500 million transistors on a 495 mm² die, while the RX 6550M has 5,400 million transistors on a 107 mm² die. The RX 6550M's 6 nm process yields a much higher density of 50.5M transistors per mm² versus 25.3M for the WX 9100.

Specification Differences

The two GPUs differ across nearly every measurable specification. The WX 9100 uses the Vega 10 chip on GCN 5.0 architecture, while the RX 6550M uses Navi 24 on RDNA 2.0. The process node moves from 14 nm (GlobalFoundries) to 6 nm (TSMC). Transistors drop from 12,500 million to 5,400 million, and die size drops from 495 mm² to 107 mm², but density rises from 25.3M to 50.5M transistors per mm².

Clock speeds favor the RX 6550M across the board: 2000 MHz base versus 1200 MHz, 2840 MHz boost versus 1500 MHz, and a 2560 MHz game clock that the WX 9100 does not list. Memory clocks also favor the newer card: 2250 MHz (18 Gbps effective) versus 945 MHz (1890 Mbps effective). However, memory capacity, bus width, and bandwidth all favor the WX 9100: 16 GB versus 4 GB, 2048-bit versus 64-bit, and 483.8 GB/s versus 144.0 GB/s.

Compute units differ by a factor of four in shading units: 4096 versus 1024. TMUs are 256 versus 64, and ROPs are 64 versus 32. The RX 6550M adds 16 ray tracing cores. Pixel rates are close (96.00 versus 90.88 GPixel/s), but texture rates are not (384.0 versus 181.8 GTexel/s). FP32 is 12.29 TFLOPS versus 5.816 TFLOPS, and FP16 is 24.58 TFLOPS versus 11.63 TFLOPS.

Power and physical specs diverge completely. The WX 9100 draws 230 W, requires dual-slot cooling, a 1x 6-pin plus 1x 8-pin connector, and a 550 W suggested PSU. The RX 6550M draws 80 W, is an IGP with no power connectors, and has no suggested PSU. The WX 9100 uses PCIe 3.0 x16, while the RX 6550M uses PCIe 4.0 x4. Display outputs are 6x mini-DisplayPort 1.4a for the WX 9100 versus portable-device-dependent for the RX 6550M. The WX 9100 measures 267 mm long and 111 mm high; the RX 6550M has no recorded dimensions.

API support favors the RX 6550M for DirectX (12 Ultimate versus 12_1) and Vulkan (1.4 versus 1.3), while OpenGL is identical at 4.6. The WX 9100 is end-of-life, released in July 2017 with a launch MSRP of 1,599 USD, and has a successor in the Radeon Pro Vega. The RX 6550M is active, released in January 2023, and has no successor listed.

Head-to-Head Benchmarks

The database records two head-to-head benchmark tests between these GPUs. The first is Geekbench OpenCL, where the WX 9100 scores 66,605 against 42,536 for the RX 6550M. The 56.6% delta is the largest in either direction and aligns with the massive memory bandwidth advantage (483.8 GB/s versus 144.0 GB/s) and the 2.11x FP32 throughput lead (12.29 TFLOPS versus 5.816 TFLOPS). OpenCL workloads that scale with raw compute and memory bandwidth will overwhelmingly favor the WX 9100.

The second test is Geekbench Vulkan, where the WX 9100 wins again with 54,711 versus 50,867. The 7.6% delta is modest, and the RX 6550M's higher clocks (2840 MHz boost versus 1500 MHz) plus newer architecture narrow the gap substantially. Vulkan tends to reward architectural efficiency and driver optimization more than raw throughput, which explains why the RX 6550M comes closer here despite having a quarter of the shading units and a fraction of the bandwidth.

The average benchmark scores reinforce the head-to-head results. The WX 9100 averages 64,212 across all recorded tests, while the RX 6550M averages 46,702. That is a 37.5% gap in aggregate performance. Looking at the rival sets, the WX 9100 sits within 0.6% to 0.8% of its nearest competitors (CMP 30HX, RX 9060 XT LP, RX 7600M, Pro Vega 56), while the RX 6550M is within 0.2% to 1.6% of its nearest competitors (Arc A530M, RX 5600M, RTX A2000, RTX 5880 Ada Generation). The WX 9100's rivals are all higher-performing cards, which places it in a distinctly stronger performance tier.

The Verdict

The data points to a clear conclusion: the AMD Radeon Pro WX 9100 is the stronger GPU in every recorded benchmark. It wins both head-to-head tests, holds a 56.6% lead in OpenCL and a 7.6% lead in Vulkan, and posts an average benchmark score 37.5% higher than the RX 6550M. Its 89th percentile standing versus 85th for the RX 6550M confirms that it belongs to a higher performance class, despite being several years older and built on a more mature process node.

Users who need maximum compute throughput, particularly for OpenCL-based workloads, should choose the WX 9100. Its 16 GB of HBM2 with 483.8 GB/s bandwidth, 4096 shading units, and 12.29 TFLOPS of FP32 make it a workstation-oriented part that can handle large data sets and sustained compute tasks. The 230 W power draw and dual-slot form factor are acceptable trade-offs for that level of performance.

Users who prioritize efficiency and portability should look to the RX 6550M. It draws 80 W, requires no external power connectors, and comes as an IGP, making it suitable for laptops or compact systems. Its Vulkan performance is within 7.6% of the WX 9100, and its higher clock speeds and 16 ray tracing cores give it modern feature support that the older card lacks. For graphics-focused tasks in Vulkan, the RX 6550M offers a surprisingly competitive experience given its smaller footprint.

The verdict is not about which card is "better" in absolute terms, since the WX 9100 wins outright. It is about matching hardware to workload. Compute-heavy, bandwidth-hungry tasks demand the WX 9100. Power-sensitive, mobile, or ray-tracing-enabled workloads favor the RX 6550M, even with its lower benchmark scores. The database records no scenario where the RX 6550M outperforms the WX 9100, so any choice in its favor must rest on non-benchmark factors like power, size, or API support.