AMD Radeon PRO V620 vs AMD Radeon PRO W6800 Comparison

AMD Radeon PRO V620 and AMD Radeon PRO W6800 are both built on the Navi 21 chip with RDNA 2.0 architecture, but benchmark results show they are not identical performers. The V620 leads in raw compute tests, while the W6800 counters with a broader feature set for display workloads. Both cards sit in the 96th percentile of all GPUs, placing them among the top tier of workstation accelerators, yet their average benchmark scores differ by a narrow margin of 0.8%. The data reveals a clear split: the V620 is a compute-focused accelerator with no display outputs, whereas the W6800 is a full-featured workstation card with six mini-DisplayPort connections.

Head-to-Head Benchmarks

The most decisive victory for the AMD Radeon PRO V620 comes in the Geekbench Vulkan test, where it scores 144364 against the W6800's 109961. That is a 31.3% advantage, a substantial gap that highlights the V620's superior graphics throughput in API-level workloads. Vulkan performance is critical for real-time rendering and GPU compute tasks, and the V620's lead here is not marginal—it is a dominant win that suggests the card is better suited for applications that leverage modern graphics APIs heavily.

In OpenCL, the V620 also takes the lead, scoring 128580 versus the W6800's 121808. The delta is 5.6%, a smaller but still meaningful margin. OpenCL is a common benchmark for general-purpose GPU compute, and the V620's higher score indicates better raw math throughput. This aligns with the specification differences: the V620 has 4608 shading units, 288 texture mapping units, and 128 ROPs, compared to the W6800's 3840 shading units, 240 TMUs, and 96 ROPs. The V620 also delivers 20.28 TFLOPS of FP32 performance versus 17.83 TFLOPS for the W6800, which explains its advantage in compute-heavy tests.

However, the W6800 is not without its own benchmark wins. The fact pack includes a Geekbench Metal score for the W6800 of 174420, a test that the V620 does not have a recorded result for. Metal is Apple's graphics API, and the W6800's strong showing there suggests it has better compatibility or optimization for macOS environments. While this is not a head-to-head comparison in the traditional sense, it is a notable data point that gives the W6800 a unique advantage in specific ecosystems. In the two direct head-to-head comparisons available, the V620 wins both, but the W6800's Metal score indicates it has strengths that the V620 cannot match due to lack of data.

When looking at the average benchmark scores, the V620 edges out the W6800 by 0.8%—136472 versus 135396. This is a tight race overall, but the Vulkan gap of 31.3% is the single largest differentiator. The W6800's nearest rival list includes the NVIDIA A10M and RTX 4000 Ada Generation, both with average scores within 0.1%, showing that the W6800 is competitive with those cards. The V620's nearest rivals include the W6800X Duo, which is 0.5% ahead, and the W6800, which is 0.8% behind. These close margins suggest that in overall performance, these cards are nearly interchangeable, but the specific benchmark breakdown reveals where each excels.

Where Each One Wins

The AMD Radeon PRO V620 is the clear winner for compute-intensive tasks. Its 31.3% lead in Vulkan and 5.6% lead in OpenCL make it the better choice for workloads that rely on raw GPU processing power, such as machine learning inference, scientific simulation, or rendering tasks that use Vulkan compute shaders. The V620's higher shading unit count, TMUs, and ROPs directly contribute to its performance advantage. It also has a higher boost clock of 2200 MHz compared to the W6800's 2322 MHz, but the V620 compensates with more cores. The V620's FP32 throughput of 20.28 TFLOPS is 13.7% higher than the W6800's 17.83 TFLOPS, making it the superior card for any application that is bottlenecked by single-precision floating-point math.

The AMD Radeon PRO W6800 wins in the field of display and connectivity. It features 6x mini-DisplayPort 1.4a outputs, enabling multi-monitor setups or direct connection to displays without additional adapters. The V620 has no display outputs at all, meaning it is strictly an accelerator that must be paired with a separate GPU for video output. This makes the W6800 the only viable option for users who need a single card to drive a high-resolution display wall or multiple monitors. Additionally, the W6800's Metal benchmark score of 174420, while not directly comparable to the V620, suggests it has strong performance in macOS-based workflows, which is a distinct advantage for creative professionals in Apple ecosystems.

In terms of power efficiency, the W6800 has a lower TDP of 250 W versus the V620's 300 W, and it requires a 600 W suggested PSU compared to 700 W. This makes the W6800 easier to integrate into existing systems with smaller power supplies, and it generates less heat. For users who prioritize a quieter or cooler workstation, the W6800's lower power draw is a tangible benefit. The W6800 also has a launch MSRP of 2,249 USD, which is a data point for those tracking costs, but the V620 has no listed launch MSRP.

FAQ

Q: Which card has a higher average benchmark score?

A: The AMD Radeon PRO V620 has an average benchmark score of 136472, which is 0.8% higher than the AMD Radeon PRO W6800's score of 135396.

Q: How much faster is the V620 in Vulkan performance?

A: The V620 scores 144364 in Geekbench Vulkan, while the W6800 scores 109961, giving the V620 a 31.3% advantage.

Q: Does the W6800 have any benchmark where it outperforms the V620?

A: The W6800 has a Geekbench Metal score of 174420, but the V620 has no recorded Metal result, so a direct comparison is not possible. In the two head-to-head tests (OpenCL and Vulkan), the V620 wins both.

Q: Can the V620 be used to connect displays?

A: No, the AMD Radeon PRO V620 has no display outputs. The W6800, in contrast, has 6x mini-DisplayPort 1.4a outputs.

Q: What are the power requirements for each card?

A: The V620 has a TDP of 300 W and a suggested PSU of 700 W, while the W6800 has a TDP of 250 W and a suggested PSU of 600 W.

Q: Are both cards based on the same architecture?

A: Yes, both cards use the Navi 21 chip and are based on RDNA 2.0 architecture, manufactured on a 7 nm process at TSMC.

Specification Differences

The two cards share many core specifications, including 32 GB of GDDR6 memory, a 256-bit bus width, 512.0 GB/s memory bandwidth, and a PCIe 4.0 x16 interface. Both are dual-slot cards with identical dimensions of 267 mm length, 120 mm height, and 50 mm width. However, the differences are significant in compute resources. The V620 has 4608 shading units, 288 TMUs, and 128 ROPs, while the W6800 has 3840 shading units, 240 TMUs, and 96 ROPs. The V620 also has 72 ray tracing cores versus 60 on the W6800. Clock speeds differ: the V620 has a base clock of 1825 MHz and a boost clock of 2200 MHz, while the W6800 has a base clock of 1575 MHz and a boost clock of 2322 MHz. The V620's higher base clock and core count give it a pixel rate of 281.6 GPixel/s and a texture rate of 633.6 GTexel/s, compared to the W6800's 222.9 GPixel/s and 557.3 GTexel/s. FP32 performance is 20.28 TFLOPS for the V620 and 17.83 TFLOPS for the W6800. Power delivery also differs: the V620 uses 2x 8-pin connectors, while the W6800 uses 1x 6-pin + 1x 8-pin. The most notable difference is display outputs: the V620 has none, while the W6800 has 6x mini-DisplayPort 1.4a.

Architecture Differences

Both cards are built on the same Navi 21 chip with RDNA 2.0 architecture, using a 7 nm process at TSMC. They share the same transistor count of 26,800 million and a die size of 520 mm², resulting in a transistor density of 51.5M per mm². The architecture is identical, meaning both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The difference lies in how the chip is configured. The V620 has a more fully enabled implementation with 4608 shading units and 72 ray tracing cores, while the W6800 has 3840 shading units and 60 ray tracing cores. This suggests the V620 uses a higher bin of the Navi 21 die, with fewer disabled compute units. The W6800's higher boost clock of 2322 MHz versus the V620's 2200 MHz indicates the W6800 may have better power delivery or thermal headroom for boosting, but the V620 compensates with more raw compute units. Both cards are end-of-life products, with the V620 released on 2021-11-03 and the W6800 on 2021-06-07, and both succeed the Radeon Pro Vega. The W6800 has a launch MSRP of 2,249 USD, while the V620 has no launch MSRP listed. The shared architecture means software optimizations for RDNA 2.0 apply equally to both, but the V620's larger compute configuration gives it an edge in pure throughput, while the W6800's display outputs and lower power draw make it more versatile for traditional workstation use.