GeForce 845M vs Radeon RX 640

Find out if it is worth upgrading your current GPU setup by comparing GeForce 845M 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 845M 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 845M and Radeon RX 640 are Laptop Graphics Cards

Note: GeForce 845M 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 845M or Radeon RX 640 here:

Main Specs

  GeForce 845M Radeon RX 640
Power consumption (TDP) 45 Watt 50 Watt
Interface PCIe 3.0 x8 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
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  • Radeon RX 640 has 11% more power consumption, than GeForce 845M.
  • Both video cards are using PCIe 3.0 x8 interface connection to a motherboard.
  • Radeon RX 640 has 2 GB more memory, than GeForce 845M.
  • Both cards are used in Laptops.
  • GeForce 845M is build with Maxwell architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 147 MHz higher, than GeForce 845M.
  • GeForce 845M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 4000 MHz higher, than GeForce 845M.

Game benchmarks

high / 1080p 3−4 5−6
ultra / 1080p 1−2 3−4
QHD / 1440p 0−1 2−3
low / 720p 14−16 16−18
medium / 1080p 6−7 7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than GeForce 845M.

Full Specs

  GeForce 845M Radeon RX 640
Architecture Maxwell Polaris
Code name GM108 Polaris 12
Type Laptop Laptop
Release date 12 March 2014 12 August 2019
Pipelines 384 640
Core clock speed 1071 MHz 1218 MHz
Boost Clock 1150 MHz 1218 MHz
Transistor count 1,870 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 37.63 38.98
Floating-point performance 883.7 gflops
Memory bus width 64/128 Bit 64 Bit
Memory clock speed 2000 - 5000 MHz 6000 MHz
Memory bandwidth 40.1 GB/s 112.0 GB/s
Shared memory - -
DirectX 12 (11_0) 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 1.2.131
CUDA +
FreeSync +
Bitcoin / BTC (SHA256) 76 Mh/s
Laptop size medium sized large
Optimus +
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