Radeon RX 640 OEM vs RX Vega 8 (Ryzen 4000/5000)

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Primary details

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

Place in the ranking481not rated
Place by popularity34not in top-100
Power efficiency41.34no data
ArchitectureVega (2017−2020)GCN 4.0 (2016−2020)
GPU code nameVegaPolaris 23
Market segmentLaptopDesktop
Release date7 January 2020 (4 years ago)9 April 2020 (4 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 cores512640
Core clock speedno data1295 MHz
Boost clock speed2100 MHzno data
Number of transistorsno data2,200 million
Manufacturing process technology7 nm14 nm
Power consumption (TDP)15 Watt50 Watt
Texture fill rateno data51.80
Floating-point processing powerno data1.658 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).

Interfaceno dataPCIe 3.0 x8
Widthno data1-slot
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 typeno dataGDDR5
Maximum RAM amountno data4 GB
Memory bus widthno data128 Bit
Memory clock speedno data1500 MHz
Memory bandwidthno data96 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 data1x DisplayPort 1.4a, 2x mini-DisplayPort 1.4a

API compatibility

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

DirectX12_112 (12_0)
Shader Modelno data6.7 (6.4)
OpenGLno data4.6
OpenCLno data2.1
Vulkan-1.3

Pros & cons summary


Recency 7 January 2020 9 April 2020
Chip lithography 7 nm 14 nm
Power consumption (TDP) 15 Watt 50 Watt

RX Vega 8 (Ryzen 4000/5000) has a 100% more advanced lithography process, and 233.3% lower power consumption.

RX 640 OEM, on the other hand, has an age advantage of 3 months.

We couldn't decide between Radeon RX Vega 8 (Ryzen 4000/5000) and Radeon RX 640 OEM. We've got no test results to judge.

Be aware that Radeon RX Vega 8 (Ryzen 4000/5000) is a notebook card while Radeon RX 640 OEM is a desktop 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 RX Vega 8 (Ryzen 4000/5000)
Radeon RX Vega 8 (Ryzen 4000/5000)
AMD Radeon RX 640 OEM
Radeon RX 640 OEM

Comparisons with similar GPUs

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Community ratings

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3.8 1184 votes

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Questions & comments

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