GeForce GT 640M vs Radeon HD 7750

When choosing between GeForce GT 640M and Radeon HD 7750, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M and Radeon HD 7750.

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 HD 7750
Power consumption (TDP) 32 Watt 75 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 7750 has 134% more power consumption, than GeForce GT 640M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GeForce GT 640M has 1 GB more memory, than Radeon HD 7750.
  • GeForce GT 640M is used in Laptops, and Radeon HD 7750 - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and Radeon HD 7750 - with GCN 1.0.
  • GeForce GT 640M and Radeon HD 7750 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 640M is 675 MHz higher, than Radeon HD 7750.

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 HD 7750 in Assassin's Creed Odyssey is 133% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M Radeon HD 7750
Architecture Kepler GCN 1.0
Code name N13P-GS Cape Verde
Type Laptop Desktop
Release date 22 March 2012 15 February 2012
Pipelines 384 512
Boost Clock 645 MHz 800 MHz
Transistor count 1,270 million 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 25.60
Floating-point performance 480.0 gflops 819.2 gflops
Length 168 mm
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 1125 MHz
Memory bandwidth 72 GB/s
Shared memory -
DirectX 12 API
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126
CUDA +
FreeSync +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 2.1 x16
HDMI + +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 18 Mh/s 98 Mh/s
Laptop size medium sized
Optimus +
Eyefinity +
Design reference
DisplayPort support +
CrossFire +
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