AMD Radeon PRO V620 vs NVIDIA RTX 4500 Ada Generation Comparison

The NVIDIA RTX 4500 Ada Generation and AMD Radeon PRO V620 represent two distinct approaches to workstation graphics, separated by process node, architecture generation, and design philosophy. Benchmark data from Geekbench shows the NVIDIA card leading in both compute and graphics API tests, though the AMD card counters with a larger memory pool and higher raw pixel throughput. The following analysis draws exclusively from the provided specification and benchmark data.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA RTX 4500 Ada Generation achieves an average benchmark score of 166,094, placing it in the 97th percentile of all GPUs. The AMD Radeon PRO V620 scores 136,472 on average, sitting in the 96th percentile. The NVIDIA card leads by roughly 21.7% in this aggregate metric.

Q: How do the two cards compare in OpenCL performance?

A: In the Geekbench OpenCL test, the RTX 4500 Ada scores 160,786 versus 128,580 for the Radeon PRO V620. This represents a 25% advantage for the NVIDIA card, the largest single-test margin between the two.

Q: What is the memory capacity difference?

A: The AMD Radeon PRO V620 offers 32 GB of GDDR6 memory on a 256-bit bus, while the NVIDIA RTX 4500 Ada provides 24 GB of GDDR6 on a 192-bit bus. Despite the smaller capacity, the NVIDIA card achieves 432.0 GB/s bandwidth versus 512.0 GB/s for the AMD card.

Q: Which GPU has a higher transistor density?

A: The NVIDIA RTX 4500 Ada, built on a 5 nm process, packs 45,900 million transistors into a 379 mm² die, yielding 121.1M transistors per mm². The AMD Radeon PRO V620, on a 7 nm process, contains 26,800 million transistors across a 520 mm² die, giving 51.5M per mm².

Q: Are both cards still in production?

A: No. The NVIDIA RTX 4500 Ada is listed as Active in production status, while the AMD Radeon PRO V620 is marked End-of-life. The AMD card launched on 2021-11-03, roughly two years before the NVIDIA card's 2023-08-08 release date.

Q: Which card has a higher FP32 compute rating?

A: The NVIDIA RTX 4500 Ada delivers 39.63 TFLOPS of FP32 performance, nearly double the 20.28 TFLOPS of the AMD Radeon PRO V620. However, the AMD card reaches 40.55 TFLOPS in FP16, slightly exceeding the NVIDIA's 39.63 TFLOPS in that mode.

Architecture Differences

The two GPUs stem from fundamentally different architectural lineages. The NVIDIA RTX 4500 Ada uses the AD103 chip built on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. This enables a transistor density of 121.1M per mm² across a 379 mm² die. The AMD Radeon PRO V620 employs the Navi 21 chip with RDNA 2.0 architecture, also from TSMC but on a larger 7 nm node, resulting in just 51.5M transistors per mm² across a 520 mm² die.

These architectural choices manifest in compute resources. The NVIDIA card fields 7,680 shading units, 240 TMUs, and 80 ROPs, supported by 60 RT cores and 240 tensor cores. The AMD card counters with 4,608 shading units, 288 TMUs, and 128 ROPs, plus 72 RT cores — but no tensor cores, as RDNA 2.0 does not include dedicated AI acceleration hardware. The NVIDIA card's tensor cores are a significant architectural differentiator, enabling AI-accelerated workflows that the AMD card cannot replicate.

Clock speeds also differ. The RTX 4500 Ada runs at a 2070 MHz base clock boosting to 2580 MHz, while the Radeon PRO V620 operates at 1825 MHz base and 2200 MHz boost. Memory clocks follow suit: 2250 MHz (18 Gbps effective) for NVIDIA versus 2000 MHz (16 Gbps effective) for AMD. The NVIDIA card also draws less power, rated at 210 W TDP versus 300 W for the AMD, and requires no power connectors (drawing from the PCIe slot) compared to the AMD's 2x 8-pin setup.

API support is identical on paper — both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. But the underlying hardware differs: NVIDIA's Ada architecture brings third-generation RT cores and fourth-generation tensor cores, while AMD's RDNA 2.0 uses second-generation RT cores. The NVIDIA card's display outputs include 4x DisplayPort 1.4a, whereas the AMD card has no display outputs at all, indicating a compute-focused or virtualized usage model.

Head-to-Head Benchmarks

The head-to-head benchmark data contains two Geekbench tests, and the NVIDIA RTX 4500 Ada wins both decisively. In the OpenCL test, the RTX 4500 scores 160,786 against the Radeon PRO V620's 128,580 — a 25% delta in favor of NVIDIA. This is the largest performance gap in the comparison, reflecting the NVIDIA card's superior FP32 throughput (39.63 vs 20.28 TFLOPS) and its higher boost clock (2580 vs 2200 MHz).

The Vulkan test narrows the gap but still favors NVIDIA. Here, the RTX 4500 Ada achieves 171,401 points versus 144,364 for the AMD card, a delta of 18.7%. Interestingly, both cards score higher in Vulkan than OpenCL, but the NVIDIA card improves by roughly 6.6% while the AMD card gains about 12.3% — suggesting the RDNA 2.0 architecture responds more strongly to Vulkan's lower-overhead API. Nevertheless, the absolute gap remains substantial.

Context from nearest rivals reinforces NVIDIA's position. The RTX 4500 Ada's average score of 166,094 sits just 0.5% above the NVIDIA RTX A5500 (165,217) and 0.7% above the AMD Radeon PRO W7800 (164,894). It trails the AMD Radeon Pro W6900X (168,574) by 1.5% and leads the NVIDIA A100 PCIe 40 GB (162,504) by 2.2%. The Radeon PRO V620, meanwhile, clusters tightly with its own rivals: it leads the AMD Radeon Pro W6800X Duo (135,774) by 0.5%, the AMD Radeon PRO W6800 (135,396) by 0.8%, and the NVIDIA A10M (135,230) by 0.9%, while matching the NVIDIA RTX 4000 Ada Generation (135,218) at 0.9% ahead. This places the two cards in entirely different performance tiers — the RTX 4500 Ada competes with high-end workstation GPUs, while the Radeon PRO V620 sits alongside mid-range offerings.

Specification Differences

The two cards diverge across nearly every major specification field:

• Process node: 5 nm (NVIDIA) vs 7 nm (AMD)
• Transistors: 45,900 million vs 26,800 million
• Die size: 379 mm² vs 520 mm²
• Transistor density: 121.1M / mm² vs 51.5M / mm²
• Base clock: 2070 MHz vs 1825 MHz
• Boost clock: 2580 MHz vs 2200 MHz
• Memory clock: 2250 MHz (18 Gbps effective) vs 2000 MHz (16 Gbps effective)
• Memory size: 24 GB vs 32 GB
• Memory bus: 192-bit vs 256-bit
• Memory bandwidth: 432.0 GB/s vs 512.0 GB/s
• Shading units: 7,680 vs 4,608
• TMUs: 240 vs 288
• ROPs: 80 vs 128
• RT cores: 60 vs 72
• Tensor cores: 240 vs none
• Pixel rate: 206.4 GPixel/s vs 281.6 GPixel/s
• Texture rate: 619.2 GTexel/s vs 633.6 GTexel/s
• FP32: 39.63 TFLOPS vs 20.28 TFLOPS
• FP16: 39.63 TFLOPS (1:1) vs 40.55 TFLOPS (2:1)
• TDP: 210 W vs 300 W
• Power connectors: None vs 2x 8-pin
• Suggested PSU: 550 W vs 700 W
• Dimensions: 245 mm length, 112 mm height vs 267 mm length, 120 mm height, 50 mm width
• Display outputs: 4x DisplayPort 1.4a vs No outputs
• Production status: Active vs End-of-life
• Release date: 2023-08-08 vs 2021-11-03

The AMD card holds advantages in memory capacity, bus width, bandwidth, TMUs, ROPs, RT cores, pixel rate, texture rate, and FP16 performance. The NVIDIA card leads in process node, transistor count, density, clocks, shading units, tensor cores, FP32, power efficiency, and physical size.

The Verdict

The data paints a clear picture: the NVIDIA RTX 4500 Ada Generation outperforms the AMD Radeon PRO V620 in every head-to-head benchmark, with a 25% OpenCL lead and an 18.7% Vulkan lead. Its average benchmark score of 166,094 places it 21.7% above the AMD card's 136,472, and its 97th percentile ranking versus 96th confirms a higher standing among all GPUs.

For users prioritizing raw compute performance, FP32 throughput, or AI-accelerated workloads, the RTX 4500 Ada is the unambiguous choice. Its tensor cores and 39.63 TFLOPS FP32 rating provide capabilities the Radeon PRO V620 simply lacks. The NVIDIA card also consumes 90 W less power, requires no auxiliary power connectors, and fits in a shorter 245 mm length, making it easier to integrate into existing systems.

The AMD Radeon PRO V620 does retain specific advantages worth noting. Its 32 GB memory capacity exceeds the NVIDIA's 24 GB, and its 512.0 GB/s bandwidth outpaces the 432.0 GB/s of the RTX 4500 Ada. For workloads that are memory-bound rather than compute-bound, such as large dataset manipulation or certain rendering tasks, the AMD card could offer practical benefits. Its higher pixel rate (281.6 vs 206.4 GPixel/s) and texture rate (633.6 vs 619.2 GTexel/s) also suggest strengths in rasterization-heavy scenarios.

However, the AMD card's End-of-life status and lack of display outputs limit its applicability. It launched nearly two years earlier and has no successor listed, while the NVIDIA card remains Active with a successor in the Blackwell PRO W generation. The Radeon PRO V620's nearest rivals — the RTX 4000 Ada Generation at 135,218 and Radeon PRO W6800 at 135,396 — all score within 0.9% of it, indicating it competes at a lower performance tier than the RTX 4500 Ada.

The verdict is straightforward: the NVIDIA RTX 4500 Ada Generation is the stronger GPU by benchmark data, offering superior compute performance, modern architecture, and active production support. The AMD Radeon PRO V620 retains niche appeal for memory-heavy tasks requiring 32 GB capacity, but its performance deficit and end-of-life status make it a less compelling option. Users needing maximum FP32 or AI performance should select the NVIDIA card; those prioritizing memory capacity in a legacy deployment may still find the AMD card serviceable, provided they can accommodate its 300 W TDP and 2x 8-pin connectors.