Radeon RX 640 vs RX Vega Mobile

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Primary details

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

Place in the rankingnot rated615
Place by popularitynot in top-100not in top-100
Power efficiencyno data7.29
ArchitectureVega (2017−2020)GCN 4.0 (2016−2020)
GPU code nameVega MobilePolaris 23
Market segmentLaptopLaptop
Release date7 January 2018 (6 years ago)13 May 2019 (5 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 cores1792640
Core clock speedno data1082 MHz
Boost clock speedno data1218 MHz
Number of transistorsno data2,200 million
Manufacturing process technology14 nm14 nm
Power consumption (TDP)90 Watt50 Watt
Texture fill rateno data48.72
Floating-point processing powerno data1.559 TFLOPS
ROPsno data16
TMUsno data40

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 sizemedium sizedlarge
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 typeHBM2GDDR5
Maximum RAM amount4 GB2 GB
Memory bus width2048 Bit64 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

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.

DirectX12_112 (12_0)
Shader Modelno data6.4
OpenGLno data4.6
OpenCLno data2.0
Vulkan-1.2.131

Pros & cons summary


Recency 7 January 2018 13 May 2019
Maximum RAM amount 4 GB 2 GB
Power consumption (TDP) 90 Watt 50 Watt

RX Vega Mobile has a 100% higher maximum VRAM amount.

RX 640, on the other hand, has an age advantage of 1 year, and 80% lower power consumption.

We couldn't decide between Radeon RX Vega Mobile and Radeon RX 640. 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 Vega Mobile
Radeon RX Vega Mobile
AMD Radeon RX 640
Radeon RX 640

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.


2.8 302 votes

Rate Radeon RX Vega Mobile on a scale of 1 to 5:

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3.2 255 votes

Rate Radeon RX 640 on a scale of 1 to 5:

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Questions & comments

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