AMD Radeon Pro Vega 64 vs AMD Radeon PRO W6800 Comparison

The Verdict

The data is unambiguous: the AMD Radeon PRO W6800 is the superior workstation card in nearly every measurable category. Its average benchmark score of 135,396 dwarfs the 72,379 of the AMD Radeon Pro Vega 64, representing a decisive generational leap. The W6800 wins all three head-to-head benchmark comparisons, with the largest margin in Metal (142.7% higher score), followed by OpenCL (71.3% higher) and Vulkan (48.2% higher).

The Radeon Pro Vega 64, while still holding a 91st percentile ranking against all GPUs, is clearly a product from an older era. It launched in 2017, uses the GCN 5.0 architecture on a 14 nm process, and supports only DirectX 12 (12_1). The W6800, released in 2021, uses RDNA 2.0 on a 7 nm node, supports DirectX 12 Ultimate (12_2), and offers hardware ray tracing with 60 dedicated RT cores. For any workload that leverages modern APIs, ray tracing, or high-bandwidth memory capacities, the W6800 is the only rational choice.

Who should pick which? If the task involves large datasets, 3D rendering with ray tracing, or Vulkan-based applications, the data strongly favors the W6800. If the requirement is simply a legacy Vega card for compatibility with older Mac Pro environments, the Pro Vega 64 remains functional, but its 16 GB HBM2 and GCN architecture place it far behind in raw compute. The verdict is clear: the W6800 is the professional card to select whenever the software stack can use its newer features.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon PRO W6800 has an average benchmark score of 135,396, which is 87.1% higher than the AMD Radeon Pro Vega 64's average of 72,379. The W6800 also ranks in the 96th percentile of all GPUs, while the Vega 64 sits in the 91st percentile.

Q: How large is the performance gap in the Metal benchmark?

A: The W6800 scores 174,420 in Metal, while the Vega 64 scores 71,868. This gives the W6800 a 142.7% advantage, which is the largest single-benchmark delta between the two cards in the database.

Q: Does the Radeon PRO W6800 support hardware ray tracing?

A: Yes. The W6800 has 60 dedicated ray tracing cores, a feature completely absent from the Radeon Pro Vega 64, which has no RT cores listed. This makes the W6800 suitable for ray-traced workloads in supported applications.

Q: What is the difference in memory capacity and type?

A: The W6800 offers 32 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The Vega 64 has 16 GB of HBM2 on a 2048-bit bus with 402.4 GB/s bandwidth. While the Vega 64 has a wider bus, the W6800 has double the capacity and higher total bandwidth.

Q: Which card is more recent and on a smaller manufacturing process?

A: The W6800 was released on 2021-06-07 and uses a 7 nm process at TSMC. The Vega 64 was released on 2017-06-26 and uses a 14 nm process at GlobalFoundries. The W6800 also packs 26,800 million transistors on a 520 mm² die, compared to 12,500 million on 495 mm² for the Vega 64.

Q: Are both cards still in production?

A: No. Both are listed as end-of-life. The W6800 had a launch MSRP of 2,249 USD, while the Vega 64 has no recorded launch MSRP in the database.

Architecture Differences

The architectural divide between these two cards is profound. The W6800 is built on RDNA 2.0, AMD's modern gaming and workstation architecture, while the Vega 64 uses GCN 5.0, a design that dates back to 2017. This is not a refinement; it is a complete redesign. The W6800's Navi 21 chip is fabricated on a 7 nm process at TSMC, allowing 26,800 million transistors on a 520 mm² die. The Vega 64's Vega 10 chip uses a 14 nm process at GlobalFoundries, with 12,500 million transistors on a 495 mm² die. The transistor density tells the story: 51.5 million per mm² for the W6800 versus 25.3 million per mm² for the Vega 64.

The compute unit configuration also differs significantly. The W6800 has 3,840 shading units, 240 texture mapping units, and 96 render output units. The Vega 64 has more shading units at 4,096 and more TMUs at 256, but only 64 ROPs. Yet the W6800's higher clocks more than compensate. Its base clock is 1575 MHz with a boost of 2322 MHz, while the Vega 64 runs at 1250 MHz base and 1350 MHz boost. This clock advantage, combined with the newer architecture, yields higher pixel and texture rates: the W6800 produces 222.9 GPixel/s and 557.3 GTexel/s, versus 86.40 GPixel/s and 345.6 GTexel/s for the Vega 64.

The most critical feature gap is ray tracing. The W6800 includes 60 RT cores, enabling hardware-accelerated ray tracing in supported workloads. The Vega 64 has no RT cores at all. Additionally, the W6800 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Vega 64 tops out at DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6.

Specification Differences

The recorded data shows the following differences between the two cards:

• Process node: 7 nm (TSMC) for W6800, 14 nm (GlobalFoundries) for Vega 64
• Transistors: 26,800 million vs 12,500 million
• Die size: 520 mm² vs 495 mm²
• Transistor density: 51.5M / mm² vs 25.3M / mm²
• Base clock: 1575 MHz vs 1250 MHz
• Boost clock: 2322 MHz vs 1350 MHz
• Memory clock: 2000 MHz (16 Gbps effective) vs 786 MHz (1572 Mbps effective)
• Memory size: 32 GB GDDR6 vs 16 GB HBM2
• Memory bus width: 256 bit vs 2048 bit
• Memory bandwidth: 512.0 GB/s vs 402.4 GB/s
• Shading units: 3840 vs 4096
• TMUs: 240 vs 256
• ROPs: 96 vs 64
• RT cores: 60 vs none
• Pixel rate: 222.9 GPixel/s vs 86.40 GPixel/s
• Texture rate: 557.3 GTexel/s vs 345.6 GTexel/s
• FP32 performance: 17.83 TFLOPS vs 11.06 TFLOPS
• FP16 performance: 35.67 TFLOPS vs 22.12 TFLOPS (both 2:1)
• Slot width: Dual-slot vs IGP
• Power connectors: 1x 6-pin + 1x 8-pin vs None
• Bus interface: PCIe 4.0 x16 vs PCIe 3.0 x16
• Display outputs: 6x mini-DisplayPort 1.4a vs Portable Device Dependent
• DirectX support: 12 Ultimate (12_2) vs 12 (12_1)
• Vulkan support: 1.4 vs 1.3
• Release date: 2021-06-07 vs 2017-06-26
• TDP: Both rated at 250 W

Head-to-Head Benchmarks

The database records three benchmark comparisons, and the W6800 wins all of them. The largest margin appears in the Metal test. Here the W6800 scores 174,420 against the Vega 64's 71,868, a delta of 142.7%. This nearly 2.5x advantage in Metal suggests that the RDNA 2.0 architecture translates exceptionally well to Apple's graphics API, likely due to the much higher boost clock and modern memory subsystem.

In OpenCL, the W6800 again dominates with a score of 121,808 versus 71,094 for the Vega 64, a 71.3% lead. The gap is smaller than in Metal but still decisive. The W6800's FP32 compute of 17.83 TFLOPS, compared to 11.06 TFLOPS for the Vega 64, helps explain this result.

The Vulkan benchmark shows the closest margin, with the W6800 at 109,961 and the Vega 64 at 74,174, a 48.2% difference. Even in its weakest relative showing, the W6800 remains far ahead. This pattern, consistently favoring the newer card across all three APIs, indicates that the advantage is structural, not workload-specific.

The average benchmark scores reinforce this picture. The W6800's 135,396 average places it within 0.1% of the NVIDIA A10M and NVIDIA RTX 4000 Ada Generation, and slightly ahead of the AMD Radeon Pro W6800X Duo by 0.3%. The Vega 64's 72,379 average sits within 0.4% of the NVIDIA TITAN X Pascal and 0.9% of the AMD Radeon RX 6650M. The W6800 is competing in a higher performance class entirely.

Where Each One Wins

The Radeon PRO W6800 wins every benchmark category measured, so its use cases are broad. The 32 GB of GDDR6 memory at 512.0 GB/s makes it suitable for large-scale 3D rendering, machine learning inference with large model sizes, and high-resolution video editing where memory capacity is a bottleneck. Its 60 RT cores enable ray-traced rendering in DCC applications that support DirectX 12 Ultimate. The 6x mini-DisplayPort 1.4a outputs support multi-monitor professional setups. The PCIe 4.0 x16 interface provides double the bandwidth of the Vega 64's PCIe 3.0, reducing transfer bottlenecks for large datasets.

The Radeon Pro Vega 64, despite losing all benchmarks, retains specific niche value. Its 2048-bit memory bus, though paired with slower HBM2, offers a different memory topology that some legacy applications may have been tuned for. Its IGP slot width and "Portable Device Dependent" display outputs indicate it was designed for integrated Mac Pro environments, not standalone PC workstations. For users maintaining older Mac Pro systems that require a Vega architecture card, the Vega 64 remains the compatible choice. Its 16 GB HBM2 may still be adequate for moderate workloads, and its 250 W TDP matches the W6800, but the performance data shows it is outclassed in every recorded test.

The data does not support any scenario where the Vega 64 outperforms the W6800. The only reason to select the Vega 64 is system compatibility with older Mac Pro chassis or software that specifically requires GCN 5.0. For all other professional workloads, the W6800 is the superior option based on every benchmark and specification in the database.