ATI M66 vs AMD Radeon Pro Vega 20

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General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking348not rated
Place by popularitynot in top-100not in top-100
Value for money14.41no data
ArchitectureVega (2017−2021)Ultra-Threaded SE
GPU code nameVega MobileM66
Market segmentMobile workstationDesktop
Release date15 November 2018 (5 years old)no data
Current price$360 $14.95
Value for money

Performance to price ratio. The higher, the better.

no data

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores1280no data
Core clock speed815 MHzno data
Boost clock speed1283 MHzno data
Number of transistorsno data157 million
Manufacturing process technology14 nm90 nm
Power consumption (TDP)100 Wattno data
Texture fill rate102.6no data

Size and compatibility

Information on Radeon Pro Vega 20 and M66 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop sizelargeno data
InterfacePCIe 3.0 x16no data
Supplementary power connectors1x 6-pin + 1x 8-pinno data

Memory

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 typeHBM2no data
Maximum RAM amount4 GBno data
Memory bus width1024 Bitno data
Memory clock speed1480 MHzno data
Memory bandwidth189.4 GB/sno data
Shared memory-no data

Video outputs and ports

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 ConnectorsNo outputsno data

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX12 (12_1)9.0c (9_3)
Shader Model6.33.0
OpenGL4.62.1
OpenCL2.0N/A
Vulkan1.2.131N/A

Advantages and disadvantages


Chip lithography 14 nm 90 nm

We couldn't decide between Radeon Pro Vega 20 and M66. We've got no test results to judge.

Be aware that Radeon Pro Vega 20 is a mobile workstation card while M66 is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

User ratings

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AMD Radeon Pro Vega 20
Radeon Pro Vega 20
ATI M66
M66

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