AMD Radeon PRO V620 vs NVIDIA RTX 4000 SFF Ada Generation Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear picture: the AMD Radeon PRO V620 wins both head-to-head tests against the NVIDIA RTX 4000 SFF Ada Generation. The Geekbench OpenCL result shows the AMD card scoring 128,580 against NVIDIA's 124,812, a 3% advantage. The gap widens dramatically in the Vulkan test, where AMD scores 144,364 versus NVIDIA's 109,364, representing a 32% lead. Two wins for AMD, zero for NVIDIA in direct comparison.

The average benchmark scores tell a slightly different story, however. The AMD Radeon PRO V620 posts an average score of 136,472 across all tested workloads, placing it in the 96th percentile of all GPUs. The NVIDIA RTX 4000 SFF Ada Generation averages 117,088, sitting in the 95th percentile. The 19,384-point gap in average scores corresponds to roughly a 16.5% overall advantage for AMD, though this figure is not directly stated in the data — it is derived from the given averages.

Looking at the nearest rivals for each card provides additional context. The AMD Radeon PRO V620's closest competitor is the AMD Radeon Pro W6800X Duo with an average score of 135,774, just 0.5% behind. The NVIDIA RTX 4000 SFF Ada Generation appears as the fourth-closest rival to the AMD card, averaging 135,218 — only 0.9% lower. This proximity means the AMD card and the NVIDIA RTX 4000 SFF Ada Generation are essentially neck-and-neck in aggregate performance, despite the lopsided head-to-head Vulkan result.

For the NVIDIA card, its nearest rival is the NVIDIA GB10 at 117,393, which actually scores 0.3% higher. The AMD Radeon PRO W7700 comes next at 118,976, 1.6% above the RTX 4000 SFF. The NVIDIA Tesla V100 SXM2 16 GB trails by 2.4%, and the NVIDIA RTX A5500 Mobile is 2.8% behind. This positioning shows the RTX 4000 SFF Ada Generation sits in a competitive cluster where small percentage differences separate several cards.

Where Each One Wins

The AMD Radeon PRO V620 demonstrates its strongest advantage in Vulkan-based workloads. The 32% delta in the Vulkan benchmark is substantial and suggests the RDNA 2.0 architecture handles Vulkan API operations with particular efficiency relative to NVIDIA's Ada Lovelace implementation. This is the clearest use-case distinction in the data: if a workload relies heavily on Vulkan, the AMD card holds a decisive edge.

The OpenCL results are much closer. With only a 3% difference, these two cards are effectively interchangeable for OpenCL compute tasks. Applications that leverage OpenCL will see nearly identical performance from either GPU, making other factors — such as power consumption, physical size, or memory capacity — more relevant differentiators in this specific workload category.

The NVIDIA RTX 4000 SFF Ada Generation does not win any direct benchmark comparison in this dataset. However, its strengths lie outside raw benchmark scores. The card draws 70 W of power compared to the AMD's 300 W, requires no external power connectors, and fits in a 168 mm length versus the AMD's 267 mm. For constrained environments where power delivery and physical space are limiting factors, the NVIDIA card's specifications become its winning attributes — even if the benchmark scores favor AMD.

Architecture Differences

The two GPUs represent fundamentally different design philosophies. The AMD Radeon PRO V620 uses the Navi 21 chip built on TSMC's 7 nm process, packing 26,800 million transistors into a 520 mm² die. The transistor density works out to 51.5 million transistors per square millimeter. This is a large, power-hungry design that prioritizes raw throughput.

The NVIDIA RTX 4000 SFF Ada Generation employs the AD104 chip on TSMC's 5 nm process. It contains 35,800 million transistors — 9,000 million more than the AMD chip — but fits them into a much smaller 294 mm² die. The resulting transistor density of 121.8 million per square millimeter is more than double the AMD's figure. This density advantage enables NVIDIA to deliver substantial compute capability while drawing only 70 W, a fraction of the AMD's 300 W power draw.

Memory configurations differ significantly. The AMD card offers 32 GB of GDDR6 on a 256-bit bus, yielding 512.0 GB/s of bandwidth. The NVIDIA card provides 20 GB of GDDR6 on a 160-bit bus, producing 280.0 GB/s. The AMD's memory bandwidth is 83% higher, which likely contributes to its benchmark superiority.

Shader resources also diverge. The AMD card contains 4,608 shading units, 288 texture mapping units, and 128 raster operations pipelines. The NVIDIA card has more shading units at 6,144, but fewer TMUs at 192 and fewer ROPs at 64. The AMD's pixel rate of 281.6 GPixel/s dwarfs NVIDIA's 99.84 GPixel/s, and the texture rate of 633.6 GTexel/s versus 299.5 GTexel/s shows similar dominance.

Ray tracing hardware differs in both count and type. The AMD card has 72 ray tracing cores, while the NVIDIA card has 48. The NVIDIA card additionally includes 192 tensor cores, a feature entirely absent from the AMD specification. FP32 compute is close — 20.28 TFLOPS for AMD versus 19.17 TFLOPS for NVIDIA — but FP16 performance diverges sharply: AMD delivers 40.55 TFLOPS (2:1 ratio) while NVIDIA provides 19.17 TFLOPS (1:1 ratio).

The NVIDIA card supports display output with 4x mini-DisplayPort 1.4a connectors, while the AMD card has no display outputs at all — it is compute-only. Both use PCIe 4.0 x16 interfaces and support DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Clock speeds show a stark contrast: the AMD base clock is 1825 MHz with a 2200 MHz boost, while NVIDIA runs at 720 MHz base and 1560 MHz boost. The NVIDIA's lower clocks are compensated by its higher shader count and architectural efficiency.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO V620 averages 136,472 across all benchmark tests, while the NVIDIA RTX 4000 SFF Ada Generation averages 117,088. The AMD card sits in the 96th percentile of all GPUs, one percentile higher than NVIDIA's 95th.

Q: How large is the Vulkan performance gap between these two cards?

A: The AMD Radeon PRO V620 scores 144,364 in the Geekbench Vulkan test, which is 32% higher than the NVIDIA RTX 4000 SFF Ada Generation's score of 109,364.

Q: What are the power requirements for each card?

A: The AMD Radeon PRO V620 has a TDP of 300 W and requires two 8-pin power connectors with a suggested 700 W power supply. The NVIDIA RTX 4000 SFF Ada Generation draws only 70 W, needs no power connectors, and works with a suggested 250 W power supply.

Q: How much memory does each card offer and at what bandwidth?

A: The AMD Radeon PRO V620 provides 32 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s bandwidth. The NVIDIA RTX 4000 SFF Ada Generation provides 20 GB of GDDR6 on a 160-bit bus with 280.0 GB/s bandwidth.

Q: Does either card support display outputs?

A: Yes, the NVIDIA RTX 4000 SFF Ada Generation has 4x mini-DisplayPort 1.4a outputs. The AMD Radeon PRO V620 has no display outputs, making it a compute-only solution.

Q: What is the production status of each card?

A: The AMD Radeon PRO V620 is end-of-life, having been released on November 3, 2021. The NVIDIA RTX 4000 SFF Ada Generation is active, released on March 20, 2023, with the Blackwell PRO W listed as its successor.

The Verdict

The data supports different choices depending on the priority. For raw benchmark performance, the AMD Radeon PRO V620 is the clear winner. It beats the NVIDIA RTX 4000 SFF Ada Generation in both head-to-head tests, with a decisive 32% Vulkan advantage and a 3% OpenCL edge. Its average benchmark score of 136,472 places it in the 96th percentile, and its nearest rival — the AMD Radeon Pro W6800X Duo — is only 0.5% behind, meaning the AMD card leads a tight pack of high performers.

However, the NVIDIA RTX 4000 SFF Ada Generation is not without merit. Its 70 W power draw, lack of external power connectors, and compact 168 mm length make it suitable for deployments where the AMD card's 300 W draw, dual 8-pin connectors, and 267 mm length would be problematic. The NVIDIA card also includes tensor cores — 192 of them — which the AMD card lacks entirely. For machine learning workloads that leverage tensor operations, this architectural feature could be decisive despite the benchmark scores.

The memory comparison favors AMD substantially: 32 GB versus 20 GB, and 512.0 GB/s versus 280.0 GB/s bandwidth. Workloads that are memory-capacity-bound or bandwidth-sensitive will perform better on the AMD card. The 83% bandwidth advantage is likely a primary driver of the AMD's Vulkan benchmark dominance.

The production statuses are also relevant. The AMD card is end-of-life, while the NVIDIA card is active with a successor already identified. Buyers needing long-term availability and support would favor the NVIDIA product. Those who can accept an end-of-life component gain superior benchmark performance.

In summary: pick the AMD Radeon PRO V620 for maximum compute performance, particularly in Vulkan workloads, where its 32% advantage is decisive. Pick the NVIDIA RTX 4000 SFF Ada Generation when power efficiency, physical footprint, display outputs, or tensor core capabilities are the binding constraints.

Specification Differences

| Specification | AMD Radeon PRO V620 | NVIDIA RTX 4000 SFF Ada Generation |

|---|---|---|

| Architecture | RDNA 2.0 | Ada Lovelace |

| Process Node | 7 nm | 5 nm |

| Transistors | 26,800 million | 35,800 million |

| Die Size | 520 mm² | 294 mm² |

| Transistor Density | 51.5M / mm² | 121.8M / mm² |

| Base Clock | 1825 MHz | 720 MHz |

| Boost Clock | 2200 MHz | 1560 MHz |

| Memory Clock | 2000 MHz / 16 Gbps effective | 1750 MHz / 14 Gbps effective |

| Memory Size | 32 GB | 20 GB |

| Memory Bus Width | 256 bit | 160 bit |

| Memory Bandwidth | 512.0 GB/s | 280.0 GB/s |

| Shading Units | 4608 | 6144 |

| TMUs | 288 | 192 |

| ROPs | 128 | 64 |

| RT Cores | 72 | 48 |

| Tensor Cores | None | 192 |

| Pixel Rate | 281.6 GPixel/s | 99.84 GPixel/s |

| Texture Rate | 633.6 GTexel/s | 299.5 GTexel/s |

| FP32 Performance | 20.28 TFLOPS | 19.17 TFLOPS |

| FP16 Performance | 40.55 TFLOPS (2:1) | 19.17 TFLOPS (1:1) |

| TDP | 300 W | 70 W |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 700 W | 250 W |

| Display Outputs | No outputs | 4x mini-DisplayPort 1.4a |

| Dimensions (L×H×W) | 267 mm × 120 mm × 50 mm | 168 mm × 69 mm × Width not listed |

| Production Status | End-of-life | Active |

| Release Date | November 3, 2021 | March 20, 2023 |

| Predecessor | Radeon Pro Vega | Workstation Ampere |

| Successor | None listed | Blackwell PRO W |

| Geekbench OpenCL Score | 128,580 | 124,812 |

| Geekbench Vulkan Score | 144,364 | 109,364 |

| Average Benchmark Score | 136,472 | 117,088 |

| Percentile vs All GPUs | 96th | 95th |