GeForce GT 645M vs HD Graphics 5300

When choosing between GeForce GT 645M and HD Graphics 5300, 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 645M and HD Graphics 5300.

GeForce GT 645M and HD Graphics 5300 are Laptop Graphics Cards

Note: GeForce GT 645M and HD Graphics 5300 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 HD Graphics 5300 here:

Main Specs

  GeForce GT 645M HD Graphics 5300
Power consumption (TDP) 32 Watt 15 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x1
Memory type DDR3\GDDR5 System Shared
Maximum RAM amount 2 GB
Display Connectors No outputs No outputs
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  • GeForce GT 645M has 113% more power consumption, than HD Graphics 5300.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and HD Graphics 5300 uses PCIe 2.0 x1 interface.
  • Both cards are used in Laptops.
  • GeForce GT 645M is build with Kepler architecture, and HD Graphics 5300 - with Gen. 8 Broadwell.
  • GeForce GT 645M is manufactured by 28 nm process technology, and HD Graphics 5300 - by 14 nm process technology.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 0−1
medium / 1080p 2−3 0−1

Full Specs

  GeForce GT 645M HD Graphics 5300
Architecture Kepler Gen. 8 Broadwell
Code name N13P-GS Broadwell GT2
Type Laptop Laptop
Release date 22 March 2012 5 September 2014
Pipelines 384 24
Core clock speed 100 MHz
Boost Clock 900 MHz
Transistor count 1,270 million 1,300 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 22.7 billion/sec 21.60
Floating-point performance 544.5 gflops
Memory bus width 128bit 64/128 Bit
Memory clock speed 1800 MHz
Shared memory - +
DirectX 12 API 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.4
OpenCL 1.1 2.0
Vulkan 1.1.126 1.1.80
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 +
Quick Sync +
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