Iris Plus Graphics 940 vs Iris Pro Graphics 580

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Primary details

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

Place in the ranking638not rated
Place by popularitynot in top-100not in top-100
Power efficiency22.17no data
ArchitectureGeneration 9.0 (2015−2016)Generation 11.0 (2019−2021)
GPU code nameSkylake GT4eIce Lake GT2
Market segmentLaptopDesktop
Release date1 September 2015 (9 years ago)no data (2024 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 cores576384
Core clock speed350 MHz400 MHz
Boost clock speed950 MHz1000 MHz
Number of transistors189 millionno data
Manufacturing process technology14 nm+10 nm
Power consumption (TDP)15 Watt15 Watt
Texture fill rate68.4024.00
Floating-point processing power1.094 TFLOPS0.768 TFLOPS
ROPs98
TMUs7224

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 BusPCIe 3.0 x1
Widthno dataIGP

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 typeDDR3L/LPDDR3/DDR4System Shared
Maximum RAM amount64 GBSystem 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 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)12 (12_1)
Shader Model6.4no data
OpenGL4.64.6
OpenCL3.0no data
Vulkan1.3-

Pros & cons summary


Chip lithography 14 nm 10 nm

Iris Plus Graphics 940 has a 40% more advanced lithography process.

We couldn't decide between Iris Pro Graphics 580 and Iris Plus Graphics 940. We've got no test results to judge.

Be aware that Iris Pro Graphics 580 is a notebook card while Iris Plus Graphics 940 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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Intel Iris Pro Graphics 580
Iris Pro Graphics 580
Intel Iris Plus Graphics 940
Iris Plus Graphics 940

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.


3.4 17 votes

Rate Iris Pro Graphics 580 on a scale of 1 to 5:

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2.6 82 votes

Rate Iris Plus Graphics 940 on a scale of 1 to 5:

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Questions & comments

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