Iris Plus Graphics 645 vs Tegra X1

#ad 
Buy on Amazon
VS

Primary details

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

Place in the rankingnot rated665
Place by popularitynot in top-100not in top-100
Power efficiencyno data20.34
ArchitectureMaxwell 2.0 (2014−2019)Generation 9.5 (2016−2020)
GPU code nameGM20BCoffee Lake GT3e
Market segmentDesktopLaptop
Release dateno data7 October 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 cores256384
Core clock speed1000 MHz300 MHz
Boost clock speedno data1050 MHz
Number of transistors2,000 millionno data
Manufacturing process technology20 nm14 nm+++
Power consumption (TDP)15 Watt15 Watt
Texture fill rate16.0050.40
Floating-point processing power0.512 TFLOPS0.8064 TFLOPS
ROPs166
TMUs1648

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).

InterfaceIGPRing 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 memoryno 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 ConnectorsNo outputsPortable Device Dependent

Supported technologies

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

Quick Syncno data+

API compatibility

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

DirectX12 (12_1)12 (12_1)
Shader Modelno data6.4
OpenGL4.64.6
OpenCLno data3.0
Vulkan-1.3

Pros & cons summary


Chip lithography 20 nm 14 nm

Iris Plus Graphics 645 has a 42.9% more advanced lithography process.

We couldn't decide between Tegra X1 and Iris Plus Graphics 645. We've got no test results to judge.

Be aware that Tegra X1 is a desktop card while Iris Plus Graphics 645 is a notebook one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA Tegra X1
Tegra X1
Intel Iris Plus Graphics 645
Iris Plus Graphics 645

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.


3.2 141 vote

Rate Tegra X1 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
2.9 121 vote

Rate Iris Plus Graphics 645 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.