AMD Radeon Pro W6900X vs AMD Radeon Pro WX 8200 Comparison

Where Each One Wins

The benchmark data presents a one-sided comparison. The AMD Radeon Pro W6900X wins all three recorded Geekbench tests, taking a clean 3-0 sweep. The AMD Radeon Pro WX 8200 records zero wins across the same suite. This is not a close contest; the performance gulf is substantial in every measured workload.

The W6900X's largest margin comes in Geekbench Metal, where it scores 226,821 against the WX 8200's 70,759. That represents a 220.6% advantage, meaning the newer card delivers more than three times the Metal compute performance. Metal is Apple's low-level graphics and compute API, so this result matters most to users in macOS environments running GPU-accelerated rendering, compositing, or machine learning tasks.

In Geekbench OpenCL, the W6900X scores 130,035 versus 69,774 for the WX 8200, a 86.4% lead. OpenCL remains a common cross-platform compute standard, and this result shows the W6900X roughly doubles the WX 8200's throughput in general-purpose GPU compute. The gap narrows compared to Metal, but it is still decisive.

Geekbench Vulkan shows the W6900X at 148,865 and the WX 8200 at 69,076, a 115.5% difference. Vulkan is the primary low-overhead graphics API on Windows and Linux, so this metric reflects real-world gaming and graphics workloads in those environments. Again, the W6900X is more than twice as fast.

The WX 8200 does not win any category, but its own data places it in the 90th percentile of all GPUs. The W6900X sits in the 97th percentile. For a workstation card, the WX 8200 is still a capable performer, but it is clearly a previous-generation product when placed next to the W6900X.

Architecture Differences

The two cards come from different architectural eras within AMD's lineup. The W6900X uses the Navi 21 chip built on RDNA 2.0 architecture, fabricated on a 7 nm process at TSMC. The WX 8200 uses the Vega 10 chip based on GCN 5.0 architecture, fabricated on a 14 nm process at GlobalFoundries. This process node difference alone explains much of the performance gap: the newer 7 nm node allows higher clock speeds and greater transistor density.

Transistor counts reinforce the architectural leap. The W6900X packs 26,800 million transistors on a 520 mm² die, yielding a density of 51.5 million transistors per square millimeter. The WX 8200 has 12,500 million transistors on a 495 mm² die, at a density of 25.3 million per square millimeter. The W6900X more than doubles the transistor count while using a similar die area, a direct consequence of the smaller process node.

Clock speeds differ dramatically. The W6900X runs at a base clock of 1825 MHz and boosts to 2171 MHz. The WX 8200 operates at a 1200 MHz base and 1500 MHz boost. The W6900X's higher clocks, combined with its larger execution resource pool, drive its benchmark dominance.

The compute resource allocation is heavily skewed toward the W6900X. It features 5120 shading units, 320 texture mapping units, and 128 render output units. It also includes 80 ray tracing cores. The WX 8200 offers 3584 shading units, 224 TMUs, and 64 ROPs, with no ray tracing cores present. The W6900X has 43% more shading units and double the ROP count, giving it a substantial raw throughput advantage.

Memory configurations are similar in bandwidth but very different in capacity and technology. The W6900X uses 32 GB of GDDR6 on a 256-bit bus, achieving 512.0 GB/s bandwidth. The WX 8200 uses 8 GB of HBM2 on a 2048-bit bus, also achieving 512.0 GB/s. The bandwidth is identical, but the W6900X offers four times the capacity. For large datasets, scenes, or models that exceed 8 GB, the WX 8200 simply cannot hold the working set, forcing slower spillovers or preventing the workload entirely.

Memory clocks highlight the technology differences. The W6900X's memory runs at 2000 MHz with 16 Gbps effective data rate. The WX 8200's HBM2 runs at 1000 MHz with 2 Gbps effective. HBM2's extremely wide 2048-bit bus compensates for its lower clock, but the GDDR6 implementation in the W6900X achieves the same aggregate bandwidth with a quarter of the bus width.

Interface and power delivery also differ. The W6900X uses Apple MPX bus interface, while the WX 8200 uses PCIe 3.0 x16. The W6900X carries a 300 W TDP with a suggested 700 W power supply; the WX 8200 has a 230 W TDP with a suggested 550 W supply. The WX 8200 requires a dual-slot footprint with one 6-pin and one 8-pin power connector.

API support reflects the newer architecture. The W6900X supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The WX 8200 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3. The DirectX 12_2 feature level on the W6900X enables hardware ray tracing and mesh shaders, capabilities absent from the WX 8200.

The Verdict

The choice between these two cards is straightforward based on the recorded data. The AMD Radeon Pro W6900X is the superior performer in every benchmark category, with margins ranging from 86.4% to 220.6%. It also offers four times the memory capacity (32 GB versus 8 GB), newer architecture, and a 97th percentile ranking among all GPUs.

Users who require maximum compute performance, large memory capacity, or ray tracing capabilities should select the W6900X. Its 226,821 Metal score and 148,865 Vulkan score place it far outside the WX 8200's reach. The 80 ray tracing cores add future-proofing for applications that adopt hardware-accelerated ray tracing.

The WX 8200 remains a reasonable choice only in specific legacy scenarios. It scores in the 90th percentile overall, and its 69,874 average benchmark score is competitive with the NVIDIA Quadro P6000 (69,986, a 0.2% difference) and the NVIDIA RTX A3000 Mobile (70,140, a 0.4% difference). It also has a lower 230 W TDP, making it easier to cool and power in existing workstation chassis.

However, the WX 8200's 8 GB memory capacity is a hard limitation for modern large-scale workloads. The W6900X's 32 GB capacity addresses this directly. For any new purchase or upgrade, the data favors the W6900X without qualification. The WX 8200's best case is a cost-sensitive refresh of an existing GCN-based workflow where its 21.50 TFLOPS of FP16 performance is sufficient.

FAQ

Q: Which card has better Metal performance?

A: The AMD Radeon Pro W6900X scores 226,821 in Geekbench Metal, which is 220.6% higher than the WX 8200's 70,759. This is the largest performance gap between the two cards.

Q: Do both cards have the same memory bandwidth?

A: Yes, both achieve 512.0 GB/s. The W6900X uses 32 GB of GDDR6 on a 256-bit bus, while the WX 8200 uses 8 GB of HBM2 on a 2048-bit bus.

Q: Does the WX 8200 support ray tracing?

A: No. The WX 8200 has no ray tracing cores listed in its specifications. The W6900X includes 80 ray tracing cores.

Q: How does the W6900X compare to its nearest rivals?

A: The W6900X's average benchmark score is 168,574. It is 1.5% ahead of the NVIDIA RTX 4500 Ada Generation (166,094), 2% ahead of the NVIDIA RTX A5500 (165,217), and 2.2% ahead of the AMD Radeon PRO W7800 (164,894).

Q: What API versions does each card support?

A: The W6900X supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The WX 8200 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3.

Q: Which card has a higher transistor density?

A: The W6900X has a transistor density of 51.5 million per square millimeter, compared to the WX 8200's 25.3 million per square millimeter. The W6900X is built on a 7 nm process, while the WX 8200 uses a 14 nm process.

Head-to-Head Benchmarks

The Geekbench Metal test delivers the most lopsided result. The W6900X produces 226,821 points against the WX 8200's 70,759, a 220.6% delta. This test exercises the GPU's compute capabilities through Apple's Metal API, and the RDNA 2.0 architecture's 5120 shading units simply overwhelm the GCN 5.0's 3584 units. The WX 8200's score is not embarrassing in isolation, it places it near the NVIDIA Quadro P6000 (69,986) and RTX A3000 Mobile (70,140), but the W6900X is in a different performance class.

Geekbench OpenCL shows a narrower but still decisive gap. The W6900X scores 130,035, while the WX 8200 manages 69,774. The 86.4% delta reflects the W6900X's higher clock speeds (2171 MHz boost versus 1500 MHz boost) and greater compute resources. OpenCL is often more sensitive to memory bandwidth than raw shading throughput, and since both cards have identical 512.0 GB/s bandwidth, the W6900X's advantage comes primarily from its execution units and clocks.

Geekbench Vulkan falls between the other two tests. The W6900X records 148,865, and the WX 8200 records 69,076, a 115.5% difference. Vulkan's low-overhead nature tends to reward architectural efficiency, and RDNA 2.0's newer design shows clear benefits over GCN 5.0 in this API. The W6900X's 128 ROPs, double the WX 8200's 64, also help pixel-heavy workloads.

Across all three tests, the W6900X's average benchmark score is 168,574, placing it in the 97th percentile of all GPUs. The WX 8200's average is 69,870, in the 90th percentile. The delta between their averages is roughly 141%, consistent with the individual test results.

The W6900X's closest rivals in the database are the NVIDIA RTX 4500 Ada Generation (166,094, 1.5% below), NVIDIA RTX A5500 (165,217, 2% below), and AMD Radeon PRO W7800 (164,894, 2.2% below). This places the W6900X at the top of its immediate competitive tier, slightly ahead of several modern workstation cards.

The WX 8200's nearest rival data shows it trading blows with different hardware. The NVIDIA Quadro P6000 is 0.2% behind (69,986), the NVIDIA RTX A3000 Mobile is 0.4% ahead (70,140), and the AMD Radeon RX 6600 LE is 1.4% ahead (70,829). The WX 8200 is competitive within its own generation, but that generation is clearly dated relative to the W6900X.

The production status for both cards is end-of-life. The W6900X launched on 2021-08-02 with a launch MSRP of 5,999 USD. The WX 8200 launched on 2018-08-12 with a launch MSRP of 999 USD. Neither card is currently in active production, so availability depends on existing stock or the secondary market. The three-year gap between their launch dates explains the architectural and performance differences observed throughout the benchmark data.