GeForce GT 640M LE vs Radeon R9 M385X

In this comparison between GeForce GT 640M LE and Radeon R9 M385X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M LE will be the best choice, for others Radeon R9 M385X will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE and Radeon R9 M385X are Laptop Graphics Cards

Note: GeForce GT 640M LE and Radeon R9 M385X 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 M385X here:

Main Specs

  GeForce GT 640M LE Radeon R9 M385X
Power consumption (TDP) 20 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon R9 M385X uses PCIe 3.0 x16 interface.
  • Radeon R9 M385X has 2 GB more memory, than GeForce GT 640M LE.
  • Both cards are used in Laptops.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon R9 M385X - with GCN.
  • GeForce GT 640M LE and Radeon R9 M385X are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 640M LE is 300 MHz higher, than Radeon R9 M385X.

Game benchmarks

high / 1080p 0−1 8−9
ultra / 1080p 5−6
QHD / 1440p 0−1 0−1
low / 720p 1−2 18−20
medium / 1080p 0−1 10−11
The average gaming FPS of Radeon R9 M385X in Assassin's Creed Odyssey is 1800% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Radeon R9 M385X
Architecture Fermi / Kepler GCN
Code name N13P-LP Strato-XT-M3
Type Laptop Laptop
Release date 22 March 2012 16 June 2015
Pipelines 384 896
Core clock speed 1100 MHz
Boost Clock 1100 MHz
Transistor count 585 million 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 61.60
Floating-point performance 384.0 gflops 1,971 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 1500 MHz
Memory bandwidth 76.8 GB/s
Shared memory - -
DirectX 12 API
Shader Model 5.1 6.3
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
Laptop size medium sized large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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