AMD Radeon Pro W6800X vs AMD Radeon PRO W7800 Comparison

The AMD Radeon PRO W7800 and AMD Radeon Pro W6800X are both high-end workstation cards, but they target different ecosystems and performance tiers. The data shows a clear generational leap for the newer W7800, yet the W6800X holds its own in specific metrics. This analysis breaks down their benchmark scores, architectural distinctions, and the practical implications for professional workloads.

Head-to-Head Benchmarks

In the only directly comparable benchmark available, Geekbench OpenCL, the AMD Radeon PRO W7800 delivers a decisive victory. It scores 154,366 points, which is a full 24% ahead of the AMD Radeon Pro W6800X’s 124,498 points. This is a substantial margin, indicating that the W7800’s newer architecture provides significantly higher raw compute throughput in this cross-platform API. The W7800’s average benchmark score across all tests is 164,894, while the W6800X averages 160,671, a difference of roughly 2.6% in favor of the newer card.

The overall performance picture is nuanced by the fact that each card has separate benchmark results in different APIs. The W6800X posts a Geekbench Metal score of 196,844, which is not available for the W7800, while the W7800 posts a Geekbench Vulkan score of 175,422, which is not available for the W6800X. These results highlight platform-specific strengths rather than direct competition. The Vulkan score for the W7800 is notably high, suggesting strong performance in cross-vendor graphics workloads. Conversely, the W6800X’s Metal score is its standout achievement, reflecting its design for Apple’s ecosystem.

Looking at the wider competitive landscape, both cards sit in the 97th percentile of all GPUs, meaning they outperform the vast majority of graphics hardware. The W7800’s nearest rival, the NVIDIA RTX A5500, scores 165,217, placing the W7800 just 0.2% behind it. The W7800 also trails the NVIDIA RTX 4500 Ada Generation by 0.7% (that card scores 166,094) but leads the NVIDIA A100 PCIe 40 GB by 1.5% (that card scores 162,504) and the AMD Radeon Pro W6900X by 2.2% (that card scores 168,574). For the W6800X, the same NVIDIA A100 is 1.1% ahead, the W7800 is 2.6% ahead, the RTX A5500 is 2.8% ahead, and the RTX 4500 Ada Generation is 3.3% ahead. These deltas confirm that while the W7800 is a top-tier competitor, the W6800X is slightly further behind the leading edge, though still within a narrow performance band.

Where Each One Wins

The AMD Radeon PRO W7800 is the clear winner in raw compute and modern API performance. Its 24% lead in Geekbench OpenCL and its strong 175,422 Vulkan score make it the superior choice for general-purpose GPU compute, rendering, and simulation tasks that leverage Vulkan. The card’s higher FP32 throughput of 45.25 TFLOPS, compared to the W6800X’s 16.03 TFLOPS, is a massive advantage for single-precision floating-point workloads common in scientific computing and engineering simulation. Additionally, the W7800 boasts a pixel rate of 323.2 GPixel/s and a texture rate of 707.0 GTexel/s, both far exceeding the W6800X’s 200.4 GPixel/s and 500.9 GTexel/s, making it better suited for high-resolution viewport rendering and texture-heavy applications.

The AMD Radeon Pro W6800X, however, has one definitive win: its Geekbench Metal score of 196,844. This is its highest individual benchmark result and indicates that it is exceptionally well-optimized for Metal-based applications, which are prevalent in macOS environments. For professionals working exclusively within Apple’s ecosystem, such as video editors using Final Cut Pro or 3D artists using Metal-accelerated renderers, the W6800X’s Metal performance is its key selling point. Its lower TDP of 200 W, compared to the W7800’s 260 W, also makes it a more power-efficient option in absolute terms, though the W7800 delivers far more performance per watt given its massive compute lead. The W6800X’s quad-slot design and Apple MPX interface also make it the only practical choice for specific Mac Pro configurations, whereas the W7800 is a more conventional dual-slot PCIe card.

FAQ

Q: Which card is faster in Geekbench OpenCL?

A: The AMD Radeon PRO W7800 is significantly faster, scoring 154,366 compared to the AMD Radeon Pro W6800X’s 124,498, a 24% advantage.

Q: Does the AMD Radeon Pro W6800X outperform the W7800 in any benchmark?

A: Yes, the W6800X achieves a Geekbench Metal score of 196,844, which is a higher raw number than the W7800’s Geekbench Vulkan score of 175,422. However, these are different APIs and are not directly comparable.

Q: How do these cards compare to NVIDIA’s professional lineup?

A: The W7800 is 0.2% behind the NVIDIA RTX A5500 and 0.7% behind the NVIDIA RTX 4500 Ada Generation, while leading the NVIDIA A100 PCIe 40 GB by 1.5%. The W6800X is 1.1% behind the A100, 2.8% behind the RTX A5500, and 3.3% behind the RTX 4500 Ada Generation.

Q: What is the average benchmark score difference between the two cards?

A: The W7800 has an average benchmark score of 164,894, which is 2.6% higher than the W6800X’s average of 160,671.

Q: Which card has a higher memory bandwidth?

A: The W7800 has a memory bandwidth of 576.0 GB/s, while the W6800X has a bandwidth of 512.0 GB/s.

Q: Are both cards still in production?

A: No, the AMD Radeon PRO W7800 has an "Active" production status, while the AMD Radeon Pro W6800X is listed as "End-of-life."

Specification Differences

The two cards differ significantly in their core specifications, reflecting their distinct architectures and target platforms. The AMD Radeon PRO W7800 is built on a 5 nm process, while the AMD Radeon Pro W6800X uses a 7 nm process. This process advantage allows the W7800 to pack 57,700 million transistors into a 529 mm² die, resulting in a transistor density of 109.1M / mm². In contrast, the W6800X has 26,800 million transistors on a 520 mm² die, for a density of 51.5M / mm². Clock speeds also favor the W7800, with a base clock of 1895 MHz and a boost clock of 2525 MHz, versus the W6800X’s 1800 MHz base and 2087 MHz boost. Memory speed is higher on the W7800 at 2250 MHz (18 Gbps effective) compared to the W6800X’s 2000 MHz (16 Gbps effective), though both have 32 GB of GDDR6 memory on a 256-bit bus.

The compute unit configuration differs substantially: the W7800 has 4480 shading units, 280 texture mapping units (TMUs), and 128 raster operators (ROPs), while the W6800X has 3840 shading units, 240 TMUs, and 96 ROPs. Ray tracing cores are also more numerous on the W7800, with 70 versus 60. Power requirements differ, with the W7800 rated at 260 W TDP and requiring a 600 W power supply and two 8-pin connectors, while the W6800X is rated at 200 W TDP with a 550 W power supply suggestion and uses an Apple MPX connector. Physical dimensions vary as well: the W7800 is 280 mm long, 110 mm tall, and 40 mm wide, occupying a dual-slot form factor, while the W6800X is 267 mm long and 120 mm tall, but uses a quad-slot design. The W7800 uses a PCIe 4.0 x16 bus interface, whereas the W6800X uses the proprietary Apple MPX interface.

Architecture Differences

The fundamental architectural split is between RDNA 3.0 and RDNA 2.0. The AMD Radeon PRO W7800 is based on the Navi 31 chip, codenamed "Plum Bonito," and belongs to the Radeon Pro Navi (Navi III Series) generation. The AMD Radeon Pro W6800X is based on the older Navi 21 chip and belongs to the Radeon Pro Mac (Navi II Series) generation. This generational gap is the primary driver of performance differences. The W7800’s RDNA 3.0 architecture delivers a massive FP32 compute throughput of 45.25 TFLOPS, more than double the W6800X’s 16.03 TFLOPS. Similarly, FP16 performance is 90.50 TFLOPS for the W7800 versus 32.06 TFLOPS for the W6800X, both at a 2:1 ratio.

The shift to a 5 nm process node on the W7800 is a key enabler of its higher clock speeds and transistor count. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, but their display outputs differ: the W7800 offers three DisplayPort 2.1 and one mini-DisplayPort 2.1, while the W6800X offers one HDMI 2.1 and four Thunderbolt ports. The W6800X’s design is explicitly for Apple Mac Pro systems, using the Apple MPX power and bus interface, whereas the W7800 is a standard PCIe add-in card. The release dates confirm the generational gap, with the W7800 launching on April 12, 2023, and the W6800X launching on August 2, 2021. The W7800’s predecessor is listed as the Radeon Pro Vega, while the W6800X has no listed predecessor.