GeForce GTX 770M vs Radeon RX 640

If you are going to buy a new graphics card and are choosing between GeForce GTX 770M and Radeon RX 640, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 770M stacks up against Radeon RX 640, check out specs charts below.

GeForce GTX 770M and Radeon RX 640 are Laptop Graphics Cards

Note: GeForce GTX 770M 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 770M or Radeon RX 640 here:

Main Specs

  GeForce GTX 770M Radeon RX 640
Power consumption (TDP) 75 Watt 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 770M has 50% more power consumption, than Radeon RX 640.
  • GeForce GTX 770M is connected by MXM-B (3.0), and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Radeon RX 640 has 1 GB more memory, than GeForce GTX 770M.
  • Both cards are used in Laptops.
  • GeForce GTX 770M is build with Kepler architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 407 MHz higher, than GeForce GTX 770M.
  • GeForce GTX 770M 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 GTX 770M.

Game benchmarks

high / 1080p 14−16 5−6
ultra / 1080p 8−9 3−4
QHD / 1440p 3−4 2−3
low / 720p 30−33 16−18
medium / 1080p 16−18 7−8
The average gaming FPS of GeForce GTX 770M in Assassin's Creed Odyssey is 114% more, than Radeon RX 640.

Full Specs

  GeForce GTX 770M Radeon RX 640
Architecture Kepler Polaris
Code name N14E-GS Polaris 12
Type Laptop Laptop
Release date 30 May 2013 12 August 2019
Pipelines 960 640
Core clock speed 811 MHz 1218 MHz
Boost Clock 797 MHz 1218 MHz
Transistor count 2,540 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 63.76 38.98
Floating-point performance 1,530 gflops
Memory bus width 192 Bit 64 Bit
Memory clock speed 2000 MHz 6000 MHz
Memory bandwidth 96.0 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 960
Bus support PCI Express 3.0, PCI Express 2.0
SLI options +
HDMI +
Bitcoin / BTC (SHA256) 55 Mh/s
Laptop size large large
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
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