GeForce GT 640M vs Radeon R7 260X

When comparing GeForce GT 640M and Radeon R7 260X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640M and Radeon R7 260X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

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 260X
Power consumption (TDP) 32 Watt 115 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R7 260X has 259% more power consumption, than GeForce GT 640M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon R7 260X has 2 GB more memory, than GeForce GT 640M.
  • GeForce GT 640M is used in Laptops, and Radeon R7 260X - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and Radeon R7 260X - with GCN 2.0.
  • GeForce GT 640M and Radeon R7 260X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 16−18
ultra / 1080p 0−1 9−10
QHD / 1440p 0−1 4−5
low / 720p 10−12 30−35
medium / 1080p 2−3 20−22
The average gaming FPS of Radeon R7 260X in Assassin's Creed Odyssey is 333% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M Radeon R7 260X
Architecture Kepler GCN 2.0
Code name N13P-GS Bonaire
Type Laptop Desktop
Release date 22 March 2012 8 October 2013
Pipelines 384 896
Boost Clock 645 MHz 1000 MHz
Transistor count 1,270 million 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 61.60
Floating-point performance 480.0 gflops 1,971 gflops
Length 170 mm
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz
Memory bandwidth 104 GB/s
Shared memory -
DirectX 12 API
Shader Model 5.1 6.3
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126
CUDA +
FreeSync +
CUDA cores 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) 18 Mh/s 225 Mh/s
Laptop size medium sized
Optimus +
Eyefinity +
Design reference
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 5.16 Mh/s
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