ATI Mobility Radeon X1800 vs UHD Graphics 620

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Primary details

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

Place in the ranking802not rated
Place by popularity24not in top-100
Power efficiency12.33no data
ArchitectureGeneration 9.5 (2016−2020)R500 (2005−2007)
GPU code nameKaby Lake GT2M58
Market segmentDesktopLaptop
Release date1 September 2017 (7 years ago)1 March 2006 (18 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 cores19218
Core clock speed300 MHz450 MHz
Boost clock speed1000 MHz450 MHz
Number of transistors189 million321 million
Manufacturing process technology14 nm++90 nm
Power consumption (TDP)15 Wattno data
Texture fill rate24.005.400
Floating-point processing power0.384 TFLOPSno data
ROPs312
TMUs2412

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 datalarge
InterfaceRing BusMXM-III
WidthIGPno data

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 typeLPDDR3/DDR4GDDR3
Maximum RAM amount32 GB256 MB
Memory bus widthSystem Shared256 Bit
Memory clock speedSystem Shared500 MHz
Memory bandwidthno data32 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 ConnectorsPortable Device DependentNo outputs

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Quick Sync+no data

API compatibility

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

DirectX12 (12_1)9.0c (9_3)
Shader Model6.43.0
OpenGL4.62.0
OpenCL3.0N/A
Vulkan1.3N/A

Pros & cons summary


Recency 1 September 2017 1 March 2006
Maximum RAM amount 32 GB 256 MB
Chip lithography 14 nm 90 nm

UHD Graphics 620 has an age advantage of 11 years, a 12700% higher maximum VRAM amount, and a 542.9% more advanced lithography process.

We couldn't decide between UHD Graphics 620 and Mobility Radeon X1800. We've got no test results to judge.

Be aware that UHD Graphics 620 is a desktop card while Mobility Radeon X1800 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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Intel UHD Graphics 620
UHD Graphics 620
ATI Mobility Radeon X1800
Mobility Radeon X1800

Comparisons with similar GPUs

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Community ratings

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2 22 votes

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Questions & comments

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