AMD Radeon PRO V620 vs AMD Radeon PRO W7900 Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO V620 leads with an average benchmark score of 136,472, while the AMD Radeon PRO W7900 trails at 110,725. This puts the V620 in the 96th percentile of all GPUs, compared to the W7900’s 94th percentile.

Q: How do the two cards compare in the Geekbench OpenCL test?

A: The Radeon PRO V620 wins decisively, scoring 128,580 against the W7900’s 84,379. That represents a 52.4% advantage for the older card—a massive gap in raw compute workloads.

Q: Is the Radeon PRO W7900 faster in any benchmark?

A: No. In the two head-to-head tests recorded, the V620 wins both. Beyond the OpenCL blowout, the V620 also edges out the W7900 in Geekbench Vulkan, 144,364 to 137,070, a 5.3% margin.

Q: What are the nearest rivals to each card?

A: The V620’s closest competitors include the AMD Radeon Pro W6800X Duo (0.5% slower), the AMD Radeon PRO W6800 (0.8% slower), and the NVIDIA A10M and RTX 4000 Ada Generation (both 0.9% slower). The W7900’s nearest rivals are the NVIDIA RTX A5500 Mobile (2.8% faster), the NVIDIA Tesla V100 SXM2 16 GB (3.2% faster), the AMD Radeon Pro W6600X (3.2% slower), and the AMD Radeon Pro Vega II (1% slower).

Q: Do both cards support the same DirectX and Vulkan versions?

A: Yes, both are rated for DirectX 12 Ultimate (12_2) and Vulkan 1.4. OpenGL support is also identical at 4.6.

Q: Which card has more memory and bandwidth?

A: The Radeon PRO W7900 offers 48 GB of GDDR6 on a 384-bit bus, delivering 864.0 GB/s of bandwidth. The V620 comes with 32 GB of GDDR6 on a 256-bit bus, yielding 512.0 GB/s.

The Verdict

The data paints a counterintuitive picture. The newer, more expensive Radeon PRO W7900—launched with a 3,999 USD MSRP in 2023—loses both head-to-head benchmark matchups to the 2021-era Radeon PRO V620. In Geekbench OpenCL, the V620’s 128,580 score crushes the W7900’s 84,379 by 52.4%. The Vulkan gap is narrower but still favors the V620: 144,364 versus 137,070, a 5.3% edge.

For users prioritizing raw compute throughput in OpenCL-heavy workloads, the Radeon PRO V620 is the clear choice based on benchmark results. It also holds a higher percentile ranking (96th versus 94th) and a higher average score. However, the W7900 is not without merit. It offers 50% more memory (48 GB versus 32 GB), significantly higher bandwidth (864.0 GB/s versus 512.0 GB/s), and a much larger shading unit count (6144 versus 4608). The W7900 also has triple-slot cooling and display outputs (3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1), while the V620 has no display outputs at all.

The verdict depends on workload. For compute-bound tasks where OpenCL performance is king, the V620 wins outright. For memory-intensive applications that need 48 GB of VRAM and higher bandwidth, the W7900 is the better fit despite its lower benchmark scores. The V620 is end-of-life, while the W7900 remains active in production, which may matter for long-term availability.

Head-to-Head Benchmarks

The Geekbench OpenCL result is the headline. The Radeon PRO V620 posts 128,580, while the W7900 manages only 84,379. That is a 52.4% delta—an enormous performance gap that defies the generational expectation that a newer card should be faster. The V620’s nearest rivals in this metric cluster tightly around 135,000–136,000, meaning the V620 sits just below that pack, while the W7900 falls far behind.

In Geekbench Vulkan, the margin tightens considerably. The V620 scores 144,364, and the W7900 scores 137,070. The delta shrinks to 5.3%, which is a much more competitive showing for the newer card. Notably, the W7900’s Vulkan score is higher than its OpenCL score by over 62%, suggesting the architecture handles Vulkan workloads disproportionately better.

The overall win tally is 2–0 in favor of the V620. Both cards have identical API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), so software compatibility does not explain the differences. The V620’s advantage in OpenCL is likely tied to its higher boost clock (2200 MHz versus 2495 MHz) and its 2:1 FP16 ratio, though the W7900’s FP16 performance is rated at 61.32 TFLOPS (1:1), which is higher in absolute terms.

The W7900’s nearest rival data shows it trailing the RTX A5500 Mobile by 2.8% and the Tesla V100 SXM2 by 3.2%, while leading the W6600X by 3.2%. The V620, by contrast, sits within 1% of four different rivals—a much tighter competitive cluster. This suggests the V620 is right at the top of its performance tier, while the W7900 is mid-pack among its peers.

Specification Differences

The two cards diverge sharply on core specifications. The V620 uses the Navi 21 chip on a 7 nm TSMC process, while the W7900 uses Navi 31 on a 5 nm TSMC node. Transistor counts differ dramatically: the V620 packs 26,800 million transistors on a 520 mm² die, while the W7900 has 57,700 million on a 529 mm² die. Transistor density nearly doubles, from 51.5M per mm² on the V620 to 109.1M per mm² on the W7900.

Memory configurations are also distinct. The V620 has 32 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The W7900 doubles capacity to 48 GB, widens the bus to 384-bit, and boosts bandwidth to 864.0 GB/s. Memory clocks differ as well: the V620 runs at 2000 MHz (16 Gbps effective), while the W7900 runs at 2250 MHz (18 Gbps effective).

Compute units scale up on the W7900. Shading units jump from 4608 to 6144, TMUs from 288 to 384, and ROPs from 128 to 192. Ray tracing cores increase from 72 to 96. Pixel rate rises from 281.6 GPixel/s to 479.0 GPixel/s, and texture rate climbs from 633.6 GTexel/s to 958.1 GTexel/s. FP32 throughput more than triples, from 20.28 TFLOPS to 61.32 TFLOPS.

Clock speeds tell a mixed story. The V620 has a higher base clock (1825 MHz versus 1760 MHz), but the W7900 boosts higher (2495 MHz versus 2200 MHz). Power draw is nearly identical: 300 W for the V620 and 295 W for the W7900. However, the W7900 requires a 600 W suggested PSU, while the V620 asks for 700 W.

Physical dimensions differ. The V620 is 267 mm long, 120 mm tall, and 50 mm wide, occupying a dual-slot form factor. The W7900 is slightly longer at 280 mm but shorter at 110 mm tall, with a width of 51 mm and a triple-slot design. Both use 2x 8-pin power connectors and PCIe 4.0 x16 interfaces.

Architecture Differences

The architectural gap between these two GPUs is generational. The V620 is built on RDNA 2.0, code-named Navi 21, belonging to the Radeon Pro Navi (Navi II Series). The W7900 uses RDNA 3.0, code-named Plum Bonito, part of the Radeon Pro Navi (Navi III Series). This is not a minor revision; it is a full architecture shift.

The manufacturing process moves from 7 nm to 5 nm, both at TSMC. This node shrink enables the W7900 to pack more than double the transistors (57,700 million versus 26,800 million) onto nearly the same die area (529 mm² versus 520 mm²). The result is a transistor density of 109.1M per mm² on the W7900, more than double the V620’s 51.5M per mm².

Compute architecture sees major changes. The W7900’s FP16 throughput is rated at 61.32 TFLOPS with a 1:1 ratio, meaning it processes FP16 at the same rate as FP32. The V620’s FP16 is 40.55 TFLOPS with a 2:1 ratio, indicating it handles FP16 at twice the rate of its FP32 (20.28 TFLOPS). This is a fundamental design difference in how each architecture prioritizes precision modes.

Ray tracing hardware scales up as well. The W7900 has 96 RT cores versus the V620’s 72, a 33% increase. This, combined with the higher texture and pixel rates, suggests the W7900 is designed for more demanding graphics workloads. However, the benchmark data does not reflect this advantage in OpenCL or Vulkan tests, where the V620 wins both.

The V620 has no display outputs, making it a pure compute card. The W7900 includes 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, enabling direct display connectivity. Both are PCIe 4.0 x16, and neither has tensor cores. The production statuses differ: the V620 is end-of-life, while the W7900 is active. Both share the same predecessor, the Radeon Pro Vega, and neither has a listed successor. The release dates are separated by about 18 months—November 2021 for the V620 and May 2023 for the W7900.