Arc Graphics 128EU Mobile vs Iris Plus Graphics 645

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Primary details

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

Place in the ranking658not rated
Place by popularitynot in top-100not in top-100
Power efficiency21.14no data
ArchitectureGeneration 9.5 (2016−2020)Xe-LPG (2023)
GPU code nameCoffee Lake GT3eMeteor Lake GT1
Market segmentDesktopDesktop
Release date7 October 2019 (5 years ago)14 December 2023 (less than a year 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 cores3841024
Core clock speed300 MHz300 MHz
Boost clock speed1050 MHz2250 MHz
Manufacturing process technology14 nm+++10 nm
Power consumption (TDP)15 Watt28 Watt
Texture fill rate50.40144.0
Floating-point processing power0.8064 TFLOPS4.608 TFLOPS
ROPs632
TMUs4864

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).

InterfaceRing BusRing Bus
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 typeSystem SharedSystem Shared
Maximum RAM amountSystem SharedSystem Shared
Memory bus widthSystem SharedSystem Shared
Memory clock speedSystem SharedSystem Shared
Shared memory+no 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 ConnectorsPortable Device DependentPortable Device Dependent

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)12 (12_1)
Shader Model6.46.6
OpenGL4.64.6
OpenCL3.03.0
Vulkan1.31.3

Pros & cons summary


Recency 7 October 2019 14 December 2023
Chip lithography 14 nm 10 nm
Power consumption (TDP) 15 Watt 28 Watt

Iris Plus Graphics 645 has 86.7% lower power consumption.

Arc Graphics 128EU Mobile, on the other hand, has an age advantage of 4 years, and a 40% more advanced lithography process.

We couldn't decide between Iris Plus Graphics 645 and Arc Graphics 128EU Mobile. 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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Intel Iris Plus Graphics 645
Iris Plus Graphics 645
Intel Arc Graphics 128EU Mobile
Arc Graphics 128EU Mobile

Comparisons with similar GPUs

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Community ratings

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


2.9 116 votes

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4.7 13 votes

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Questions & comments

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