Radeon 540X vs RX 490M

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Primary details

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

Place in the rankingnot rated701
Place by popularitynot in top-100not in top-100
Power efficiencyno data5.37
ArchitecturePolaris (2016−2019)GCN 4.0 (2016−2020)
GPU code namePolarisLexa
Market segmentLaptopLaptop
Release date1 August 2016 (8 years ago)5 September 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 coresno data512
Core clock speedno data980 MHz
Boost clock speedno data1046 MHz
Number of transistorsno data2,200 million
Manufacturing process technology14 nm14 nm
Power consumption (TDP)no data50 Watt
Texture fill rateno data33.47
Floating-point processing powerno data1.071 TFLOPS
ROPsno data16
TMUsno data32

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 sizelargeno data
Interfaceno dataPCIe 3.0 x8
Supplementary power connectorsno dataNone

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 typeGDDR5GDDR5
Maximum RAM amountno data2 GB
Memory bus widthno data64 Bit
Memory clock speedno data1500 MHz
Memory bandwidthno data48 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 Connectorsno dataNo outputs

API compatibility

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

DirectX1212 (12_0)
Shader Modelno data6.4
OpenGLno data4.6
OpenCLno data2.0
Vulkan-1.2.131

Pros & cons summary


Recency 1 August 2016 5 September 2018

Radeon 540X has an age advantage of 2 years.

We couldn't decide between Radeon RX 490M and Radeon 540X. We've got no test results to judge.


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 RX 490M
Radeon RX 490M
AMD Radeon 540X
Radeon 540X

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


2.7 7 votes

Rate Radeon RX 490M on a scale of 1 to 5:

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3.8 315 votes

Rate Radeon 540X on a scale of 1 to 5:

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Questions & comments

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