GeForce GT 640M vs Radeon R7 384 Cores Kaveri

If you are going to buy a new graphics card and are choosing between GeForce GT 640M and Radeon R7 384 Cores Kaveri, 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 GT 640M stacks up against Radeon R7 384 Cores Kaveri, check out specs charts below.
Radeon R7 384 Cores Kaveri

GeForce GT 640M is a Laptop Graphics Card

Note: GeForce GT 640M is only used in laptop graphics. It has 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 here:

Main Specs

  GeForce GT 640M Radeon R7 384 Cores Kaveri
Power consumption (TDP) 32 Watt
Interface PCIe 3.0 x16
Memory type DDR3\GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs
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  • GeForce GT 640M is used in Laptops, and Radeon R7 384 Cores Kaveri - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and Radeon R7 384 Cores Kaveri - with GCN.
  • GeForce GT 640M and Radeon R7 384 Cores Kaveri are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 7−8
ultra / 1080p 0−1 4−5
QHD / 1440p 0−1 0−1
low / 720p 10−12 18−20
medium / 1080p 2−3 9−10
The average gaming FPS of Radeon R7 384 Cores Kaveri in Assassin's Creed Odyssey is 133% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M Radeon R7 384 Cores Kaveri
Architecture Kepler GCN
Code name N13P-GS Kaveri Spectre
Type Laptop Desktop
Release date 22 March 2012 14 January 2014
Pipelines 384 384
Core clock speed 720 MHz
Boost Clock 645 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 28 nm
Floating-point performance 480.0 gflops
Memory bus width 128bit
Memory clock speed 1800 - 4000 MHz
Shared memory - +
DirectX 12 API DirectX 12 (FL 12_0), Shader 5.2
Shader Model 5.1
OpenGL 4.5
OpenCL 1.1
Vulkan 1.1.126
CUDA +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 18 Mh/s
Laptop size medium sized
Optimus +
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