AMD Radeon Pro VII vs AMD Radeon Pro W6900X Comparison

The Verdict

The recorded data points to a clear hierarchy: the AMD Radeon Pro W6900X is the dominant part in every measured benchmark. It wins all three head-to-head tests, with an average benchmark score of 168,574 against the Radeon Pro VII’s 97,131. That is a 73.5% gap in aggregate performance, placing the W6900X in the 97th percentile of all GPUs, while the Pro VII sits at the 93rd percentile.

For users choosing between these two, the decision is almost entirely about workload class. The W6900X is for those who need maximum compute throughput, ray tracing hardware, and a much larger memory pool. The Pro VII is for those who need a dual-slot, PCIe 4.0 card with six mini-DisplayPort outputs and a lower power draw. There is no benchmark where the Pro VII wins, so the only reason to select it is system compatibility, physical space, or a specific need for its display output configuration.

The data also shows the W6900X’s nearest rivals are NVIDIA RTX 4500 Ada Generation, RTX A5500, AMD Radeon PRO W7800, and NVIDIA A100 PCIe 40 GB. All of these sit within 3.7% of the W6900X’s average score. The Pro VII’s nearest rivals are AMD Radeon RX 7900M, Instinct MI60, NVIDIA Quadro RTX 6000, and RTX A4500, with deltas ranging from -4.7% to 6%. This confirms the Pro VII is competing in a lower performance tier entirely.

Architecture Differences

The two cards come from different architectural generations. The W6900X uses the Navi 21 chip built on RDNA 2.0, while the Pro VII uses Vega 20 on GCN 5.1. Both are fabricated by TSMC on a 7 nm process, but that is where the similarity ends. The W6900X packs 26,800 million transistors on a 520 mm² die, giving a transistor density of 51.5 million per square millimeter. The Pro VII has 13,230 million transistors on a 331 mm² die, with a density of 40.0 million per square millimeter.

The W6900X is part of the Radeon Pro Mac (Navi II Series) generation, while the Pro VII belongs to the Radeon Pro Vega (Vega II Series). This generational split explains the feature differences. The W6900X has 80 dedicated ray tracing cores; the Pro VII has none. The W6900X supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, whereas the Pro VII is limited to DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6.

Memory technology is another major divider. The W6900X uses 32 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The Pro VII uses 16 GB of HBM2 on a 4096-bit bus, delivering 1.02 TB/s. This means the Pro VII has twice the memory bandwidth per byte, but half the capacity. The bus interface also differs: the W6900X uses Apple MPX, while the Pro VII uses PCIe 4.0 x16.

The clock behavior is distinct as well. The W6900X runs a base clock of 1825 MHz and boosts to 2171 MHz, with memory at 2000 MHz (16 Gbps effective). The Pro VII runs a base of 1400 MHz and boosts to 1700 MHz, with memory at 1000 MHz (2 Gbps effective). The W6900X is therefore running substantially higher clocks on both the core and the memory interface.

FAQ

Q: Which card has higher compute throughput?

A: The W6900X delivers 22.23 TFLOPS FP32 and 44.46 TFLOPS FP16, while the Pro VII delivers 13.06 TFLOPS FP32 and 26.11 TFLOPS FP16. The W6900X is 70% ahead in FP32 and 70% ahead in FP16.

Q: Does the Pro VII have ray tracing hardware?

A: No. The Pro VII has no ray tracing cores. The W6900X includes 80 RT cores, which explains its support for DirectX 12 Ultimate.

Q: Which card has more memory bandwidth?

A: The Pro VII has 1.02 TB/s of bandwidth from HBM2 on a 4096-bit bus. The W6900X has 512.0 GB/s from GDDR6 on a 256-bit bus. The Pro VII doubles the bandwidth, but the W6900X has twice the capacity.

Q: What are the physical size differences?

A: The W6900X is 267 mm long and 120 mm tall. The Pro VII is 305 mm long and 111 mm tall. The Pro VII is longer but shorter in height. The Pro VII is dual-slot; the W6900X has no listed slot width.

Q: Which card has more display outputs?

A: The Pro VII has six mini-DisplayPort 1.4a outputs. The W6900X has 1x HDMI 2.1 and 4x Thunderbolt outputs.

Q: What is the power requirement difference?

A: The W6900X has a TDP of 300 W and suggests a 700 W power supply. The Pro VII has a TDP of 250 W and suggests a 600 W power supply.

Specification Differences

The two cards differ across nearly every specification category. The W6900X uses the Navi 21 chip with 5120 shading units, 320 texture mapping units, and 128 ROPs. The Pro VII uses Vega 20 with 3840 shading units, 240 TMUs, and 64 ROPs. This gives the W6900X a 33% advantage in shading units, a 33% advantage in TMUs, and a 100% advantage in ROPs.

Pixel and texture rates follow the same pattern. The W6900X outputs 277.9 GPixel/s and 694.7 GTexel/s. The Pro VII outputs 108.8 GPixel/s and 408.0 GTexel/s. The W6900X is 155% faster in pixel throughput and 70% faster in texture throughput.

Memory capacity and type differ completely. The W6900X has 32 GB GDDR6, while the Pro VII has 16 GB HBM2. The bus widths are 256-bit versus 4096-bit, respectively. Bandwidth favors the Pro VII at 1.02 TB/s versus 512.0 GB/s, but the effective memory clock favors the W6900X at 16 Gbps versus 2 Gbps.

The W6900X includes 80 RT cores; the Pro VII has none. The W6900X supports DirectX 12 Ultimate, Vulkan 1.4, and Apple MPX. The Pro VII supports DirectX 12 (12_1), Vulkan 1.3, and PCIe 4.0 x16. Power connectors differ as well: the W6900X has no listed connectors, while the Pro VII uses 1x 6-pin plus 1x 8-pin.

Release dates are about a year apart. The Pro VII launched on May 12, 2020, with a predecessor of Radeon Pro Polaris and a successor of Radeon Pro Navi. The W6900X launched on August 2, 2021, with no predecessor or successor listed. Both are marked as end-of-life.

Head-to-Head Benchmarks

The Geekbench Metal test shows the largest absolute gap. The W6900X scores 226,821 against the Pro VII’s 108,383, a delta of 109.3%. This is the single biggest win for the W6900X, more than doubling the Pro VII’s result. The Metal API favors the RDNA 2.0 architecture heavily, likely due to the higher clock speeds and additional shading units.

In Geekbench OpenCL, the W6900X scores 130,035 against 90,148, a delta of 44.2%. This is the smallest relative win for the W6900X, but still a substantial margin. The Pro VII’s HBM2 bandwidth helps it stay closer in compute workloads, but the core count and clock advantage of the W6900X remain decisive.

The Vulkan test shows the W6900X at 148,865 against 92,862, a delta of 60.3%. This sits between the Metal and OpenCL results. The W6900X’s Vulkan 1.4 support and RT core presence give it an edge in modern API workloads, while the Pro VII’s Vulkan 1.3 support limits its ceiling.

Overall, the W6900X wins all three tests, with the Metal result being its strongest showing. The average benchmark score confirms this: 168,574 versus 97,131. The W6900X’s nearest rivals are all within 3.7% of its average, while the Pro VII’s nearest rivals range from -4.7% to 6%, indicating the Pro VII is closer to its own competitive set but far below the W6900X.

Where Each One Wins

The W6900X wins in every measurable performance category. It has higher FP32 and FP16 compute, faster pixel and texture rates, more shading units, more TMUs, more ROPs, and dedicated ray tracing cores. Its 32 GB memory capacity is double that of the Pro VII, making it the better choice for large datasets, complex scenes, or multi-app workflows that exceed 16 GB. Its Metal score of 226,821 is particularly strong, suggesting macOS or Metal-based applications will see the largest benefit. The Vulkan score of 148,865 also indicates solid modern API performance.

The Pro VII has no benchmark wins, but it holds advantages in specific non-performance areas. Its 1.02 TB/s bandwidth is double the W6900X’s, which matters for memory-bound workloads that fit within 16 GB. Its six mini-DisplayPort outputs provide more display connectivity options than the W6900X’s single HDMI and four Thunderbolt ports. It is dual-slot, has a 250 W TDP versus 300 W, and suggests a 600 W PSU versus 700 W. It is also longer at 305 mm versus 267 mm but shorter in height at 111 mm versus 120 mm.

For system integration, the Pro VII’s PCIe 4.0 x16 interface is a standard slot, while the W6900X requires an Apple MPX connection. This makes the Pro VII more flexible for conventional PC builds. The Pro VII also has a listed power connector configuration (1x 6-pin + 1x 8-pin), which aids planning, while the W6900X has no listed connectors.

The data ultimately shows the W6900X as the clear performance leader, with the Pro VII retaining relevance only for specific bandwidth-sensitive or display-heavy scenarios. No benchmark suggests the Pro VII can match the W6900X in raw throughput. The W6900X is the choice for maximum compute, ray tracing, and memory capacity. The Pro VII is the choice for standard PCIe systems needing multiple mini-DisplayPort outputs and lower power draw.