Radeon RX 6600M vs Vega 8 Efficient

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Primary details

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

Place in the rankingnot rated136
Place by popularitynot in top-100not in top-100
Power efficiencyno data24.71
ArchitectureGCN 5.0 (2017−2020)RDNA 2.0 (2020−2024)
GPU code nameRavenNavi 23
Market segmentDesktopLaptop
Release date23 April 2018 (6 years ago)31 May 2021 (3 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 cores5121792
Core clock speed300 MHz2068 MHz
Boost clock speed1100 MHz2416 MHz
Number of transistors4,940 million11,060 million
Manufacturing process technology14 nm7 nm
Power consumption (TDP)35 Watt100 Watt
Texture fill rate35.20270.6
Floating-point processing power1.126 TFLOPS8.659 TFLOPS
ROPs864
TMUs32112
Ray Tracing Coresno data28

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 sizeno datamedium sized
InterfaceIGPPCIe 4.0 x8
WidthIGPno data
Supplementary power connectorsNoneNone

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 typeSystem SharedGDDR6
Maximum RAM amountSystem Shared8 GB
Memory bus widthSystem Shared128 Bit
Memory clock speedSystem Shared1750 MHz
Memory bandwidthno data224.0 GB/s
Shared memoryno data-

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 ConnectorsNo outputsNo outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (12_1)12 Ultimate (12_2)
Shader Model6.46.5
OpenGL4.64.6
OpenCL2.02.1
Vulkan1.2.1311.3

Pros & cons summary


Recency 23 April 2018 31 May 2021
Chip lithography 14 nm 7 nm
Power consumption (TDP) 35 Watt 100 Watt

Vega 8 Efficient has 185.7% lower power consumption.

RX 6600M, on the other hand, has an age advantage of 3 years, and a 100% more advanced lithography process.

We couldn't decide between Radeon Vega 8 Efficient and Radeon RX 6600M. We've got no test results to judge.

Be aware that Radeon Vega 8 Efficient is a desktop card while Radeon RX 6600M is a notebook one.


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

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AMD Radeon Vega 8 Efficient
Radeon Vega 8 Efficient
AMD Radeon RX 6600M
Radeon RX 6600M

Comparisons with similar GPUs

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Community ratings

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2.9 53 votes

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4.3 987 votes

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Questions & comments

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