GeForce GT 645M vs GeForce GTX 560

In this comparison between GeForce GT 645M and GeForce GTX 560 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 GeForce GTX 560 will be their preference. Study the comparison tables below and make your choice.

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 GT 645M GeForce GTX 560
Power consumption (TDP) 32 Watt 150 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors Two 6-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 2x DVI, 1x mini-HDMI
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  • GeForce GTX 560 has 368% more power consumption, than GeForce GT 645M.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and GeForce GTX 560 uses PCIe 2.0 x16 interface.
  • GeForce GT 645M has 1 GB more memory, than GeForce GTX 560.
  • GeForce GT 645M is used in Laptops, and GeForce GTX 560 - in Desktops.
  • GeForce GT 645M is build with Kepler architecture, and GeForce GTX 560 - with Fermi 2.0.
  • GeForce GT 645M is manufactured by 28 nm process technology, and GeForce GTX 560 - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 560 is 2200 MHz higher, than GeForce GT 645M.

Game benchmarks

high / 1080p 1−2 14−16
ultra / 1080p 0−1 8−9
QHD / 1440p 0−1 3−4
low / 720p 12−14 27−30
medium / 1080p 2−3 16−18
The average gaming FPS of GeForce GTX 560 in Assassin's Creed Odyssey is 300% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M GeForce GTX 560
Architecture Kepler Fermi 2.0
Code name N13P-GS GF114
Type Laptop Desktop
Release date 22 March 2012 17 May 2011
Pipelines 384 336
Core clock speed 810 MHz
Transistor count 1,270 million 1,950 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 22.7 billion/sec 45.36
Floating-point performance 544.5 gflops 1,088.6 gflops
Length 8.25" (21 cm)
Memory bus width 128bit 256 Bit
Memory clock speed 1800 MHz 4000 MHz
Memory bandwidth 128.0 GB/s
Shared memory -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.1
OpenCL 1.1 1.1
Vulkan 1.1.126 N/A
CUDA + +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0 16x PCI-E 2.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support +
HDMI + +
HDCP + +
Maximum VGA resolution Up to 2048x1536 2048x1536
Audio input for HDMI Internal
3D Blu-Ray + +
3D Gaming +
Bitcoin / BTC (SHA256) 19 Mh/s 80 Mh/s
Laptop size medium sized
Optimus +
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