GeForce GTX 680M vs Radeon RX 640

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 680M and Radeon RX 640. 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 GTX 680M and Radeon RX 640. 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 GTX 680M and Radeon RX 640 are Laptop Graphics Cards

Note: GeForce GTX 680M and Radeon RX 640 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 GTX 680M or Radeon RX 640 here:

Main Specs

  GeForce GTX 680M Radeon RX 640
Power consumption (TDP) 100 Watt 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
  Check Price Check Price
  • GeForce GTX 680M has 100% more power consumption, than Radeon RX 640.
  • GeForce GTX 680M is connected by MXM-B (3.0), and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • GeForce GTX 680M and Radeon RX 640 have maximum RAM of 4 GB.
  • Both cards are used in Laptops.
  • GeForce GTX 680M is build with Kepler architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 498 MHz higher, than GeForce GTX 680M.
  • GeForce GTX 680M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 4200 MHz higher, than GeForce GTX 680M.

Game benchmarks

high / 1080p 16−18 5−6
ultra / 1080p 9−10 3−4
QHD / 1440p 4−5 2−3
4K / 2160p 4−5
low / 720p 30−35 16−18
medium / 1080p 20−22 7−8
The average gaming FPS of GeForce GTX 680M in Assassin's Creed Odyssey is 128% more, than Radeon RX 640.

Full Specs

  GeForce GTX 680M Radeon RX 640
Architecture Kepler Polaris
Code name N13E-GTX Polaris 12
Type Laptop Laptop
Release date 4 June 2012 12 August 2019
Pipelines 1344 640
Core clock speed 720 MHz 1218 MHz
Boost Clock 758 MHz 1218 MHz
Transistor count 3,540 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 80.6 billion/sec 38.98
Floating-point performance 2,038 gflops
Memory bus width 256 Bit 64 Bit
Memory clock speed 1800 MHz 6000 MHz
Memory bandwidth 115.2 GB/s 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 +
FreeSync +
CUDA cores 1344
Bus support PCI Express 3.0
SLI options +
Bitcoin / BTC (SHA256) 100 Mh/s
Laptop size large large
Optimus +
  Check Price Check Price