Quadro P620 vs Radeon R9 M395 Mac Edition
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 467 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 16.39 |
| Architecture | GCN 2.0 (2013−2017) | Pascal (2016−2021) |
| GPU code name | Grenada | GP107 |
| Market segment | Laptop | Workstation |
| Release date | 5 May 2015 (9 years ago) | 1 February 2018 (6 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 | 1792 | 512 |
| Core clock speed | 834 MHz | 1177 MHz |
| Boost clock speed | no data | 1443 MHz |
| Number of transistors | 6,200 million | 3,300 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | 250 Watt | 40 Watt |
| Texture fill rate | 93.41 | 46.18 |
| Floating-point processing power | 2.989 TFLOPS | 1.478 TFLOPS |
| ROPs | 32 | 16 |
| TMUs | 112 | 32 |
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).
| Interface | MXM-B (3.0) | PCIe 3.0 x16 |
| Length | no data | 145 mm |
| Width | no data | IGP |
| Supplementary power connectors | None | None |
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 | GDDR5 |
| Maximum RAM amount | 4 GB | 2 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1365 MHz | 1502 MHz |
| Memory bandwidth | 174.7 GB/s | 96.13 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 |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_0) | 12 (12_1) |
| Shader Model | 6.3 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.2 |
| Vulkan | 1.2.131 | 1.2.131 |
| CUDA | - | 6.1 |
Pros & cons summary
| Recency | 5 May 2015 | 1 February 2018 |
| Maximum RAM amount | 4 GB | 2 GB |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 250 Watt | 40 Watt |
R9 M395 Mac Edition has a 100% higher maximum VRAM amount.
Quadro P620, on the other hand, has an age advantage of 2 years, a 100% more advanced lithography process, and 525% lower power consumption.
We couldn't decide between Radeon R9 M395 Mac Edition and Quadro P620. We've got no test results to judge.
Be aware that Radeon R9 M395 Mac Edition is a notebook card while Quadro P620 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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