GeForce GT 645M vs Radeon 630

If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Radeon 630, 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 645M stacks up against Radeon 630, check out specs charts below.

GeForce GT 645M and Radeon 630 are Laptop Graphics Cards

Note: GeForce GT 645M and Radeon 630 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 630 here:

Main Specs

  GeForce GT 645M Radeon 630
Power consumption (TDP) 32 Watt 50 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon 630 has 56% more power consumption, than GeForce GT 645M.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon 630 uses PCIe 3.0 x8 interface.
  • Radeon 630 has 2 GB more memory, than GeForce GT 645M.
  • Both cards are used in Laptops.
  • GeForce GT 645M is build with Kepler architecture, and Radeon 630 - with GCN 1.0.
  • GeForce GT 645M is manufactured by 28 nm process technology, and Radeon 630 - by 14 nm process technology.
  • Memory clock speed of Radeon 630 is 4200 MHz higher, than GeForce GT 645M.

Game benchmarks

high / 1080p 1−2 3−4
ultra / 1080p 0−1 1−2
QHD / 1440p 0−1 0−1
low / 720p 12−14 14−16
medium / 1080p 2−3 6−7
The average gaming FPS of Radeon 630 in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M Radeon 630
Architecture Kepler GCN 1.0
Code name N13P-GS Lexa
Type Laptop Laptop
Release date 22 March 2012 12 August 2019
Pipelines 384 512
Boost Clock 1219 MHz
Transistor count 1,270 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 22.7 billion/sec
Floating-point performance 544.5 gflops
Memory bus width 128bit 64 Bit
Memory clock speed 1800 MHz 6000 MHz
Shared memory - -
DirectX 12 API DirectX 12, Shader 5.0
Shader Model 5.1
OpenGL 4.5 4.6
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) 19 Mh/s
Laptop size medium sized
Optimus +
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