AMD Radeon Instinct MI25 vs AMD Radeon Pro WX 8200 Comparison

The AMD Radeon Pro WX 8200 and the AMD Radeon Instinct MI25 are two professional-grade GPUs built on the same foundational Vega 10 chip and GCN 5.0 architecture, yet they target different corners of the workstation market. The data reveals a close performance race, with the WX 8200 edging ahead in the available benchmark, but the MI25 offering a significantly larger memory pool. This analysis breaks down their specifications, architecture, and benchmark results to determine which card suits which professional workload based strictly on the provided facts.

The Verdict

Based on the benchmark data, the AMD Radeon Pro WX 8200 is the faster card in the single head-to-head test available. In the Geekbench OpenCL benchmark, the WX 8200 scores 69,774, which is 1.8% higher than the MI25’s score of 68,562. This places the WX 8200 at an average benchmark score of 69,408, ranking it 0.9% above the Intel Arc A770 and 3.1% above the NVIDIA Quadro P6000. The MI25, with an average score of 68,562, sits 1.2% below the WX 8200 and 2.2% above the AMD Radeon Pro Vega 56. Both cards occupy the 92nd percentile among all GPUs, indicating they are similarly high-performing in the broader landscape.

The choice between them, however, hinges on workload requirements beyond raw compute. The WX 8200 is the clear pick for professionals who need display outputs and a more modest power footprint, as it features 4x mini-DisplayPort 1.4a outputs and a 230 W TDP. The MI25, conversely, is a compute-only accelerator with no display outputs, a 300 W TDP, and a higher suggested PSU of 700 W. Its advantage lies in its 16 GB of HBM2 memory, which is double the WX 8200’s 8 GB. For data center tasks that require large datasets resident in VRAM, the MI25’s capacity is its primary selling point, even if its raw compute score is slightly lower. The WX 8200 wins on measured performance and practicality for a workstation with a monitor, while the MI25 wins solely on memory capacity for compute-heavy, headless server deployments.

Specification Differences

The two cards share their core chip, process node, foundry, transistor count, die size, and transistor density, but diverge in several key specifications. Both use the Vega 10 chip built on a 14 nm process at GlobalFoundries, with 12,500 million transistors on a 495 mm² die, yielding a density of 25.3M / mm². The bus interface is identical (PCIe 3.0 x16), and both are dual-slot cards with the same physical dimensions of 267 mm in length and 111 mm in height.

The most significant differences are in clock speeds and memory. The MI25 has a higher base clock of 1400 MHz compared to the WX 8200’s 1200 MHz, though both share the same 1500 MHz boost clock. In memory, the WX 8200 runs at 1000 MHz (2 Gbps effective) while the MI25 runs at 852 MHz (1704 Mbps effective). This leads to a bandwidth disparity: the WX 8200 achieves 512.0 GB/s, while the MI25 achieves 436.2 GB/s. However, the MI25 compensates with a larger 16 GB frame buffer versus the WX 8200’s 8 GB; both use HBM2 with a 2048-bit bus.

Compute resources also differ. The MI25 has 4096 shading units and 256 TMUs, while the WX 8200 has 3584 shading units and 224 TMUs; both have 64 ROPs. Consequently, the MI25’s texture rate is 384.0 GTexel/s versus 336.0 GTexel/s for the WX 8200, and its FP32 throughput is 12.29 TFLOPS versus 10.75 TFLOPS. The MI25 also leads in FP16 at 24.58 TFLOPS (2:1) compared to 21.50 TFLOPS. The pixel rate is identical at 96.00 GPixel/s. Power requirements differ, with the WX 8200 drawing 230 W via a 1x 6-pin + 1x 8-pin connector, while the MI25 draws 300 W via 2x 8-pin connectors; the suggested PSU is 550 W for the former and 700 W for the latter. Finally, the WX 8200 has 4x mini-DisplayPort 1.4a outputs, while the MI25 has none.

Architecture Differences

Both cards are built on the GCN 5.0 architecture, which is the same generation and design philosophy. They share the same Vega 10 chip, meaning the fundamental instruction set and compute capabilities are identical. There are no differences in ray tracing or tensor core hardware, as neither card includes such dedicated units. The API support is identical for both: DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3.

The architectural differences are purely in the configuration of the silicon. The MI25 has a fuller implementation of the Vega 10 die, with 4096 shading units and 256 TMUs enabled, compared to the WX 8200 which has 3584 shading units and 224 TMUs. This suggests the MI25 uses a more complete chip, while the WX 8200 may have some units disabled for power or yield reasons. The higher base clock on the MI25 (1400 MHz vs 1200 MHz) further indicates that it is binned or configured for sustained compute throughput, whereas the WX 8200 relies on a lower base clock but maintains the same boost clock of 1500 MHz. The memory subsystem is also configured differently: the WX 8200 runs its HBM2 at a higher effective speed (2 Gbps) to achieve more bandwidth, while the MI25 runs it slower (1704 Mbps) but with twice the capacity. This shows a design trade-off: the WX 8200 prioritizes bandwidth for graphics rendering, while the MI25 prioritizes capacity for data-parallel workloads. The generation names reflect this split: the WX 8200 belongs to the "Radeon Pro Polaris (WX x200)" family, while the MI25 belongs to the "Radeon Instinct (MIx)" family.

Head-to-Head Benchmarks

The only direct benchmark comparison available is the Geekbench OpenCL test, which measures general-purpose compute performance. In this test, the AMD Radeon Pro WX 8200 wins with a score of 69,774 against the AMD Radeon Instinct MI25’s score of 68,562. The delta is 1.8% in favor of the WX 8200. This is a narrow margin, suggesting that despite the MI25’s higher shading unit count (4096 vs 3584), higher base clock (1400 MHz vs 1200 MHz), and higher FP32 throughput (12.29 TFLOPS vs 10.75 TFLOPS), the WX 8200’s superior memory bandwidth (512.0 GB/s vs 436.2 GB/s) gives it a slight edge in this particular workload.

The WX 8200 also has a benchmark in Geekbench Vulkan, scoring 69,041, which is close to its OpenCL score but not directly comparable to the MI25 since the MI25 lacks a Vulkan benchmark entry. The MI25’s average benchmark score is 68,562, which is exactly its OpenCL score, indicating that is the only data point. The WX 8200’s average is 69,408, which is the mean of its two benchmark scores. In the nearest rivals context, the WX 8200 is 0.9% ahead of the Intel Arc A770 (avg score 68,809) and 1.2% ahead of the MI25, while the MI25 is 1.8% ahead of the NVIDIA Quadro P6000 (avg score 67,320). This shows that both cards are in a tight performance cluster, with the WX 8200 holding a slight but consistent advantage in measured compute tasks.

FAQ

Q: Which card has a higher average benchmark score?

A: The AMD Radeon Pro WX 8200 has a higher average benchmark score of 69,408, while the AMD Radeon Instinct MI25 has an average score of 68,562.

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

A: The AMD Radeon Instinct MI25 has 16 GB of HBM2 memory, while the AMD Radeon Pro WX 8200 has 8 GB of HBM2 memory, making the MI25’s capacity double that of the WX 8200.

Q: Do both cards support the same APIs?

A: Yes, both cards support the same set of APIs: DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3.

Q: Which card has higher FP32 compute throughput?

A: The AMD Radeon Instinct MI25 has higher FP32 throughput at 12.29 TFLOPS, compared to the AMD Radeon Pro WX 8200’s 10.75 TFLOPS.

Q: Can the AMD Radeon Instinct MI25 connect to a display?

A: No, the AMD Radeon Instinct MI25 has no display outputs, while the AMD Radeon Pro WX 8200 has 4x mini-DisplayPort 1.4a outputs.

Q: How does the WX 8200 compare to the NVIDIA Quadro P6000 in average score?

A: The AMD Radeon Pro WX 8200 is 3.1% ahead of the NVIDIA Quadro P6000, with an average score of 69,408 versus 67,320.

Where Each One Wins

The AMD Radeon Pro WX 8200 wins in every measured benchmark scenario available in the data. It has a higher Geekbench OpenCL score (69,774 vs 68,562), a higher average benchmark score (69,408 vs 68,562), and a higher memory bandwidth (512.0 GB/s vs 436.2 GB/s). Its lower TDP of 230 W versus 300 W also makes it more efficient in a workstation chassis, and its inclusion of 4x mini-DisplayPort 1.4a outputs makes it a functional solution for a desktop workstation where a monitor is required. The WX 8200 is the winner for any professional who needs a card that can both render to a screen and perform compute tasks, given its higher measured performance and display connectivity.

The AMD Radeon Instinct MI25 wins only in the categories of raw compute resources and memory capacity. It has 4096 shading units versus 3584, 256 TMUs versus 224, a higher base clock of 1400 MHz versus 1200 MHz, and higher FP32 (12.29 TFLOPS) and FP16 (24.58 TFLOPS) throughput. Its 16 GB of HBM2 memory is double the WX 8200’s 8 GB, which is critical for datasets that exceed 8 GB in size. For a headless compute server, where display output is irrelevant and the TDP difference is less of a concern, the MI25’s larger memory and higher theoretical compute make it the more suitable choice for large-scale data processing, despite its lower benchmark score. The MI25 is the winner for pure compute density and memory capacity in a data center environment.