GeForce 920A vs GeForce GT 645M

When comparing GeForce 920A and GeForce GT 645M, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 920A and GeForce GT 645M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce GT 645M is a Laptop Graphics Card

Note: GeForce GT 645M is only used in laptop graphics. It has 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 here:

Main Specs

  GeForce 920A GeForce GT 645M
Power consumption (TDP) 33 Watt 32 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Memory type DDR3 DDR3\GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce 920A has 3% more power consumption, than GeForce GT 645M.
  • GeForce 920A is connected by PCIe 3.0 x8, and GeForce GT 645M uses PCIe 3.0 x16 interface.
  • GeForce 920A and GeForce GT 645M have maximum RAM of 2 GB.
  • GeForce 920A is used in Desktops, and GeForce GT 645M - in Laptops.
  • GeForce 920A is build with Kepler 2.0 architecture, and GeForce GT 645M - with Kepler.
  • GeForce 920A and GeForce GT 645M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 920A is 202 MHz higher, than GeForce GT 645M.

Game benchmarks

high / 1080p 0−1 1−2
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 1−2 12−14
medium / 1080p 0−1 2−3
The average gaming FPS of GeForce GT 645M in Assassin's Creed Odyssey is 1200% more, than GeForce 920A.

Full Specs

  GeForce 920A GeForce GT 645M
Architecture Kepler 2.0 Kepler
Code name GK208B N13P-GS
Type Desktop Laptop
Release date 13 March 2015 22 March 2012
Pipelines 384 384
Core clock speed 954 MHz
Transistor count 915 million 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.53 22.7 billion/sec
Floating-point performance 441.6 gflops 544.5 gflops
Memory bus width 64 Bit 128bit
Memory clock speed 2002 MHz 1800 MHz
Memory bandwidth 16.02 GB/s
Shared memory -
DirectX 12 (11_0) 12 API
Shader Model 5.1 5.1
OpenGL 4.6 4.5
OpenCL 1.2 1.1
Vulkan 1.1.126 1.1.126
CUDA 3.5 +
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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