GeForce GT 640M LE vs Radeon R9 M390

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640M LE and Radeon R9 M390. 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 LE and Radeon R9 M390. 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 LE and Radeon R9 M390 are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon R9 M390 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 GT 640M LE or Radeon R9 M390 here:

Main Specs

  GeForce GT 640M LE Radeon R9 M390
Power consumption (TDP) 20 Watt
Interface PCIe 2.0 x16
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs
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  • GeForce GT 640M LE and Radeon R9 M390 have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon R9 M390 - with GCN.
  • GeForce GT 640M LE and Radeon R9 M390 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 18−20
ultra / 1080p 10−11
QHD / 1440p 0−1 5−6
4K / 2160p 4−5
low / 720p 1−2 35−40
medium / 1080p 0−1 21−24
The average gaming FPS of Radeon R9 M390 in Assassin's Creed Odyssey is 3600% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon R9 M390
Architecture Fermi / Kepler GCN
Code name N13P-LP Pitcairn
Type Laptop Laptop
Release date 22 March 2012 9 June 2015
Pipelines 384 1024
Transistor count 585 million 5000 Million
Manufacturing process technology 28 nm 28 nm
Floating-point performance 384.0 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 1800 - 4000 MHz
Shared memory - -
DirectX 12 API
Shader Model 5.1
OpenGL 4.5 4.4
OpenCL 1.1 Not Listed
Vulkan N/A
CUDA +
FreeSync +
CUDA cores Up to 384
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 14 Mh/s 242 Mh/s
Laptop size medium sized large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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