GeForce GT 645M vs Iris Xe MAX Graphics

In this comparison between GeForce GT 645M and Iris Xe MAX Graphics you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 645M will be the best choice, for others Iris Xe MAX Graphics will be their preference. Study the comparison tables below and make your choice.

GeForce GT 645M and Iris Xe MAX Graphics are Laptop Graphics Cards

Note: GeForce GT 645M and Iris Xe MAX Graphics are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 645M or Iris Xe MAX Graphics here:

Main Specs

  GeForce GT 645M Iris Xe MAX Graphics
Power consumption (TDP) 32 Watt
Interface PCIe 3.0 x16
Memory type DDR3\GDDR5 LPDDR4x
Maximum RAM amount 2 GB 4 MB
Display Connectors No outputs
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  • Iris Xe MAX Graphics has 2 GB more memory, than GeForce GT 645M.
  • Both cards are used in Laptops.
  • GeForce GT 645M is build with Kepler architecture, and Iris Xe MAX Graphics - with Gen. 12 Xe.
  • GeForce GT 645M is manufactured by 28 nm process technology, and Iris Xe MAX Graphics - by 10 nm process technology.
  • Memory clock speed of Iris Xe MAX Graphics is 2466 MHz higher, than GeForce GT 645M.

Game benchmarks

high / 1080p 1−2 35−40
ultra / 1080p 0−1 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 12−14 60−65
medium / 1080p 2−3 40−45
The average gaming FPS of Iris Xe MAX Graphics in Assassin's Creed Odyssey is 840% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M Iris Xe MAX Graphics
Architecture Kepler Gen. 12 Xe
Code name N13P-GS iDG1LPDEV
Type Laptop Laptop
Release date 22 March 2012 31 October 2020
Pipelines 384 96
Boost Clock 1650 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 10 nm
Texture fill rate 22.7 billion/sec
Floating-point performance 544.5 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 MHz 4266 MHz
Shared memory - -
DirectX 12 API DirectX 12.1
Shader Model 5.1
OpenGL 4.5
OpenCL 1.1
Vulkan 1.1.126
CUDA +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 19 Mh/s
Laptop size medium sized
Optimus +
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