GeForce GT 640M vs Radeon RX 560X

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M and Radeon RX 560X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 640M and Radeon RX 560X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GT 640M is a Laptop Graphics Card

Note: GeForce GT 640M 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 640M here:

Main Specs

  GeForce GT 640M Radeon RX 560X
Power consumption (TDP) 32 Watt 75 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
  Check Price
  • Radeon RX 560X has 134% more power consumption, than GeForce GT 640M.
  • GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon RX 560X uses PCIe 3.0 x8 interface.
  • Radeon RX 560X has 2 GB more memory, than GeForce GT 640M.
  • GeForce GT 640M is used in Laptops, and Radeon RX 560X - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and Radeon RX 560X - with GCN 4.0.
  • GeForce GT 640M is manufactured by 28 nm process technology, and Radeon RX 560X - by 14 nm process technology.
  • Memory clock speed of Radeon RX 560X is 5200 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 18−20
ultra / 1080p 0−1 10−11
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 10−12 35−40
medium / 1080p 2−3 21−24
The average gaming FPS of Radeon RX 560X in Assassin's Creed Odyssey is 400% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M Radeon RX 560X
Architecture Kepler GCN 4.0
Code name N13P-GS Polaris 21
Type Laptop Desktop
Release date 22 March 2012 11 April 2018
Pipelines 384 1024
Core clock speed 1175 MHz
Boost Clock 645 MHz 1275 MHz
Transistor count 1,270 million 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 81.60
Floating-point performance 480.0 gflops 2,611 gflops
Length 170 mm
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 7000 MHz
Memory bandwidth 112.0 GB/s
Shared memory -
DirectX 12 API 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126 1.2.131
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) 18 Mh/s
Laptop size medium sized
Optimus +
  Check Price