GeForce GT 645M vs Radeon HD 7730M

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Radeon HD 7730M. 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 645M and Radeon HD 7730M. 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 645M and Radeon HD 7730M are Laptop Graphics Cards

Note: GeForce GT 645M and Radeon HD 7730M 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 645M or Radeon HD 7730M here:

Main Specs

  GeForce GT 645M Radeon HD 7730M
Power consumption (TDP) 32 Watt 25 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Memory type DDR3\GDDR5 DDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce GT 645M has 28% more power consumption, than Radeon HD 7730M.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 7730M uses PCIe 2.0 x16 interface.
  • GeForce GT 645M and Radeon HD 7730M have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • GeForce GT 645M is build with Kepler architecture, and Radeon HD 7730M - with GCN.
  • GeForce GT 645M and Radeon HD 7730M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 645M and Radeon HD 7730M is 1800 MHz.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 1−2
medium / 1080p 2−3 0−1
The average gaming FPS of GeForce GT 645M in Assassin's Creed Odyssey is 1200% more, than Radeon HD 7730M.

Full Specs

  GeForce GT 645M Radeon HD 7730M
Architecture Kepler GCN
Code name N13P-GS Lombok GL
Type Laptop Laptop
Release date 22 March 2012 24 April 2012
Pipelines 384 512
Core clock speed 575 MHz
Boost Clock 675 MHz
Transistor count 1,270 million 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 22.7 billion/sec 21.60
Floating-point performance 544.5 gflops 691.2 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 1800 MHz 1800 MHz
Memory bandwidth 28.8 GB/s
Shared memory - -
DirectX 12 API 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.2.131
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) 19 Mh/s 70 Mh/s
Laptop size medium sized medium sized
Optimus +
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