GeForce GT 755M vs Iris Plus Graphics 645

When choosing between GeForce GT 755M and Iris Plus Graphics 645, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 755M and Iris Plus Graphics 645.

GeForce GT 755M and Iris Plus Graphics 645 are Laptop Graphics Cards

Note: GeForce GT 755M and Iris Plus Graphics 645 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 755M or Iris Plus Graphics 645 here:

Main Specs

  GeForce GT 755M Iris Plus Graphics 645
Power consumption (TDP) 50 Watt 15 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x1
Memory type GDDR5 DDR3/DDR4
Maximum RAM amount 4 GB
Display Connectors No outputs No outputs
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  • GeForce GT 755M has 233% more power consumption, than Iris Plus Graphics 645.
  • GeForce GT 755M is connected by PCIe 3.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
  • Both cards are used in Laptops.
  • GeForce GT 755M is build with Kepler architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
  • Core clock speed of GeForce GT 755M is 680 MHz higher, than Iris Plus Graphics 645.
  • GeForce GT 755M is manufactured by 28 nm process technology, and Iris Plus Graphics 645 - by 14 nm process technology.

Game benchmarks

high / 1080p 7−8 4−5
ultra / 1080p 4−5 2−3
QHD / 1440p 0−1 0−1
low / 720p 18−20 12−14
medium / 1080p 9−10 5−6
The average gaming FPS of GeForce GT 755M in Assassin's Creed Odyssey is 66% more, than Iris Plus Graphics 645.

Full Specs

  GeForce GT 755M Iris Plus Graphics 645
Architecture Kepler Gen. 9.5 Coffee Lake
Code name N14P- Kaby Lake GT3e
Type Laptop Laptop
Release date 25 June 2013 10 July 2019
Pipelines 384 48
Core clock speed 980 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 31.36 50.40
Floating-point performance 752.6 gflops
Memory bus width 128 Bit
Memory clock speed 5400 MHz
Memory bandwidth 86.4 GB/s
Shared memory - +
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 2.1
Vulkan 1.1.126 1.1.103
CUDA +
Bus support PCI Express 3.0, PCI Express 2.0
HDMI +
Bitcoin / BTC (SHA256) 27 Mh/s
Laptop size medium sized
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
Quick Sync +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
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