AMD Radeon Pro WX 9100 vs AMD Radeon VII Comparison

The AMD Radeon VII and AMD Radeon Pro WX 9100 are both end-of-life professional graphics cards built on AMD's Vega architecture, but they represent two distinct generations and design philosophies. The data reveals a clear performance hierarchy, with the Radeon VII leading in every single benchmark where both cards have been tested, yet the WX 9100 remains a formidable competitor in specific workloads due to its raw compute configuration and lower power envelope.

Head-to-Head Benchmarks

The benchmark results are decisively in favor of the AMD Radeon VII, which wins all three head-to-head comparisons. The largest margin comes in the Geekbench Vulkan test, where the Radeon VII scores 85,909 against the WX 9100's 54,711, a 57% delta. This substantial lead suggests that the newer architecture's memory subsystem and clock speeds provide a massive advantage in API-level performance, particularly in scenarios that leverage asynchronous compute or low-level hardware access.

In the Geekbench OpenCL test, the Radeon VII posts 91,947 points versus 65,210 for the WX 9100, a 41% advantage. This is the highest absolute score for the Radeon VII across all tested workloads, indicating that its compute engines scale exceptionally well when fully utilized. The WX 9100's 65,210 OpenCL result is its second-best showing, but it still trails by a significant margin, highlighting the generational gap in execution efficiency.

The closest contest is in Geekbench Metal, where the Radeon VII scores 77,265 and the WX 9100 scores 72,085, a 7.2% delta. While still a win for the Radeon VII, this narrower gap suggests that Apple's Metal API may not fully exploit the architectural differences, or that the WX 9100's higher shading unit count (4096 versus 3840) helps it remain competitive in this specific environment. The data shows that the Radeon VII's victory is comprehensive, but the Metal result hints that the WX 9100 is not entirely obsolete in API-bound scenarios.

Looking at the broader context, the Radeon VII's average benchmark score is 64,356, which places it just 0.6% above the WX 9100's 64,002. This aggregated figure is misleading, as it includes the 3DMark Steel Nomad DX12 result (2,304) that the WX 9100 lacks, dragging the Radeon VII's average down. Without that test, the Radeon VII's true average would be even higher. The nearest rival for the Radeon VII is the NVIDIA CMP 30HX at 64,172 (0.3% lower), while the WX 9100 sits just below that, with the AMD Radeon RX 7600M trailing at 63,505 for both cards.

Architecture Differences

The two cards are built on different process nodes and chip designs. The Radeon VII uses the Vega 20 chip fabricated on TSMC's 7nm process, while the WX 9100 employs the older Vega 10 chip on GlobalFoundries' 14nm node. This process shrink allows the Radeon VII to pack 13,230 million transistors into a 331 mm² die, achieving a transistor density of 40.0M / mm². The WX 9100, by contrast, contains 12,500 million transistors on a much larger 495 mm² die, with a density of just 25.3M / mm². The smaller, denser die is a primary reason for the Radeon VII's clock speed advantage.

Clock speeds diverge sharply. The Radeon VII has a base clock of 1400 MHz and a boost clock of 1750 MHz, while the WX 9100 operates at 1200 MHz base and 1500 MHz boost. This 250 MHz boost delta directly contributes to the Radeon VII's higher pixel rate (112.0 GPixel/s versus 96.00 GPixel/s) and texture rate (420.0 GTexel/s versus 384.0 GTexel/s). However, the WX 9100 compensates with more compute units: 4096 shading units and 256 texture mapping units versus 3840 and 240 on the Radeon VII. Both cards have 64 ROPs.

Memory configurations are a critical differentiator. Both feature 16 GB of HBM2, but the Radeon VII uses a 4096-bit bus with an effective speed of 2 Gbps, yielding 1.02 TB/s of bandwidth. The WX 9100 has a narrower 2048-bit bus at 1890 Mbps effective, resulting in 483.8 GB/s. This more than 2x bandwidth advantage for the Radeon VII explains its Vulkan and OpenCL dominance, as memory-bound workloads scale directly with available bandwidth. The WX 9100's memory clock is 945 MHz versus 1000 MHz for the Radeon VII.

Architecturally, the Radeon VII is GCN 5.1, while the WX 9100 is GCN 5.0. Both support DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3, and neither has ray tracing or tensor cores. The Radeon VII is rated for a 295 W TDP, requiring a 600 W PSU and dual 8-pin connectors, whereas the WX 9100 draws 230 W with a 550 W PSU recommendation and a single 6-pin plus 8-pin setup. The WX 9100 is also physically shorter (267 mm versus 280 mm) and narrower (111 mm versus 125 mm), though both are dual-slot.

FAQ

Q: Which card has higher raw compute throughput?

A: The Radeon VII leads in FP32 with 13.44 TFLOPS versus 12.29 TFLOPS for the WX 9100, and similarly in FP16 with 26.88 TFLOPS versus 24.58 TFLOPS, both at a 2:1 ratio.

Q: Does the WX 9100 have any advantage in shading units?

A: Yes, the WX 9100 has 4096 shading units and 256 TMUs, compared to 3840 and 240 on the Radeon VII, but the Radeon VII's higher clocks and bandwidth overcome this deficit in all tested benchmarks.

Q: How do their memory bandwidths compare?

A: The Radeon VII delivers 1.02 TB/s over a 4096-bit bus, more than double the WX 9100's 483.8 GB/s over a 2048-bit bus.

Q: What is the launch MSRP difference?

A: The Radeon VII had a launch MSRP of 699 USD, while the WX 9100 launched at 1,599 USD.

Q: Which card has a higher percentile ranking among all GPUs?

A: The Radeon VII ranks in the 91st percentile, while the WX 9100 is in the 90th percentile, a difference of one percentile point.

Q: Are there any tests where the WX 9100 wins?

A: The data shows zero wins for the WX 9100 across the three head-to-head benchmarks, with the Radeon VII winning all three.

The Verdict

The data is unambiguous: the AMD Radeon VII outperforms the AMD Radeon Pro WX 9100 in every measured benchmark. The Radeon VII's 57% advantage in Vulkan and 41% in OpenCL are decisive, demonstrating that its combination of 7nm process, higher clocks, and doubled bandwidth delivers a generational leap in performance. The 7.2% Metal win, while smaller, still confirms the Radeon VII's superiority across API boundaries.

For workloads that are memory-bandwidth intensive—such as large dataset processing, high-resolution texture streaming, or compute tasks that spill to VRAM—the Radeon VII's 1.02 TB/s bandwidth is a transformative advantage over the WX 9100's 483.8 GB/s. The WX 9100's higher shading unit count (4096 versus 3840) suggests it might theoretically handle certain parallel workloads better, but the benchmark data shows no practical benefit.

The power efficiency story is more nuanced. The WX 9100 draws 230 W versus 295 W for the Radeon VII, making it the more power-conscious choice for systems with thermal or electrical constraints, and it requires a less demanding PSU (550 W versus 600 W). However, the Radeon VII delivers far more performance per watt in the actual tests, making its higher TDP a worthwhile trade-off for most users.

The WX 9100's 6x mini-DisplayPort outputs are its one clear hardware advantage, offering more display connectivity than the Radeon VII's 1x HDMI and 3x DisplayPort. For multi-monitor professional setups, this could be a deciding factor despite the performance gap.

Specification Differences

The two cards differ in every major specification category. The Radeon VII uses a 7nm process from TSMC, while the WX 9100 uses 14nm from GlobalFoundries. Transistor counts are close (13,230 million versus 12,500 million), but die size differs dramatically (331 mm² versus 495 mm²), reflecting the process advantage. Clock speeds favor the Radeon VII: 1400 MHz base and 1750 MHz boost versus 1200 MHz and 1500 MHz.

Memory bandwidth is the largest differentiator: 1.02 TB/s on a 4096-bit bus versus 483.8 GB/s on a 2048-bit bus. The Radeon VII has 3840 shading units and 240 TMUs; the WX 9100 has 4096 and 256, respectively. Both have 64 ROPs. Pixel rate is 112.0 GPixel/s versus 96.00 GPixel/s, and texture rate is 420.0 GTexel/s versus 384.0 GTexel/s.

Power requirements differ: the Radeon VII has a 295 W TDP with dual 8-pin connectors and a 600 W PSU recommendation, while the WX 9100 has a 230 W TDP with a 6-pin plus 8-pin setup and a 550 W PSU. Dimensions also vary: the Radeon VII is 280 mm long, 125 mm tall, and 40 mm wide, whereas the WX 9100 is 267 mm long and 111 mm tall (width not specified). Display outputs differ: 1x HDMI 2.0b plus 3x DisplayPort 1.4a on the Radeon VII versus 6x mini-DisplayPort 1.4a on the WX 9100. The release dates are 2019-02-06 for the Radeon VII and 2017-07-09 for the WX 9100.

Where Each One Wins

The AMD Radeon VII wins in every performance category measured. Its 57% Vulkan advantage makes it the clear choice for applications that leverage Vulkan for compute or rendering, such as modern game engines or scientific visualization tools. The 41% OpenCL lead positions it as the superior option for general-purpose GPU compute, including machine learning inference, video encoding, and physics simulations. Even in Metal, where the gap narrows to 7.2%, the Radeon VII still takes the crown, making it the better pick for macOS or iOS development environments.

The WX 9100's wins are not in raw performance but in operational characteristics. Its 230 W TDP, compared to 295 W, makes it more suitable for dense multi-GPU server configurations where power density is a concern, or for workstations with limited PSU headroom. The 6x mini-DisplayPort outputs provide greater flexibility for driving multiple high-resolution displays, a feature set that the Radeon VII's 4 outputs cannot match. Its lower launch MSRP of 699 USD versus 1,599 USD also makes it the more economical entry point for budget-conscious professionals, though this is purely a historical reference as both cards are end-of-life.

For users prioritizing maximum compute performance, memory bandwidth, or modern API efficiency, the Radeon VII is the definitive choice. For those needing lower power consumption, more display outputs, or a cheaper acquisition cost, the WX 9100 retains a niche, but the benchmark data shows it cannot match the Radeon VII in any workload where raw speed matters. The Radeon VII's 91st percentile ranking versus the WX 9100's 90th, combined with its comprehensive benchmark sweep, makes it the superior engineering achievement and the recommended option for demanding professional workloads.