Radeon Pro V620 vs Pro 555X
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 495 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Polaris (2016−2019) | RDNA 2.0 (2020−2023) |
| GPU code name | Polaris 21 | Navi 21 |
| Market segment | Mobile workstation | Workstation |
| Release date | 5 June 2017 (7 years ago) | 4 November 2021 (2 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 768 | 4608 |
| Core clock speed | 855 MHz | no data |
| Boost clock speed | no data | 2200 MHz |
| Number of transistors | 3,000 million | 26,800 million |
| Manufacturing process technology | 14 nm | 7 nm |
| Power consumption (TDP) | no data | 300 Watt |
| Texture fill rate | 43.54 | 633.6 |
| Floating-point processing power | 1.393 gflops | 20.28 gflops |
| ROPs | 16 | 128 |
| TMUs | 48 | 288 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | large | no data |
| Interface | PCIe 3.0 x8 | PCIe 4.0 x16 |
| Length | no data | 267 mm |
| Width | no data | 2-slot |
| Supplementary power connectors | None | 2x 8-pin |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | GDDR6 |
| Maximum RAM amount | 4 GB | 32 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 5080 MHz | 16 GB/s |
| Memory bandwidth | 81.6 GB/s | 512.0 GB/s |
| Shared memory | - | - |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | No outputs | No outputs |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| FreeSync | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 Ultimate (12_2) |
| Shader Model | 6.4 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2.131 | 1.2 |
Pros & cons summary
| Recency | 5 June 2017 | 4 November 2021 |
| Maximum RAM amount | 4 GB | 32 GB |
| Chip lithography | 14 nm | 7 nm |
Pro V620 has an age advantage of 4 years, a 700% higher maximum VRAM amount, and a 100% more advanced lithography process.
We couldn't decide between Radeon Pro 555X and Radeon Pro V620. We've got no test results to judge.
Be aware that Radeon Pro 555X is a mobile workstation card while Radeon Pro V620 is a workstation one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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