GeForce GT 645M vs GRID M6 8Q

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and GRID M6 8Q. 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 GRID M6 8Q. 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 is a Laptop Graphics Card

Note: GeForce GT 645M 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 645M here:

Main Specs

  GeForce GT 645M GRID M6 8Q
Power consumption (TDP) 32 Watt 100 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 8 GB
Display Connectors No outputs No outputs
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  • GRID M6 8Q has 212% more power consumption, than GeForce GT 645M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GRID M6 8Q has 6 GB more memory, than GeForce GT 645M.
  • GeForce GT 645M is used in Laptops, and GRID M6 8Q - in Desktops.
  • GeForce GT 645M is build with Kepler architecture, and GRID M6 8Q - with Maxwell 2.0.
  • GeForce GT 645M and GRID M6 8Q are manufactured by 28 nm process technology.
  • Memory clock speed of GRID M6 8Q is 3212 MHz higher, than GeForce GT 645M.

Game benchmarks

high / 1080p 1−2 18−20
ultra / 1080p 0−1 10−11
QHD / 1440p 0−1 5−6
4K / 2160p 4−5
low / 720p 12−14 35−40
medium / 1080p 2−3 21−24
The average gaming FPS of GRID M6 8Q in Assassin's Creed Odyssey is 420% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M GRID M6 8Q
Architecture Kepler Maxwell 2.0
Code name N13P-GS GM204
Type Laptop Workstation
Release date 22 March 2012 30 August 2015
Pipelines 384 1536
Core clock speed 722 MHz
Transistor count 1,270 million 5,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 22.7 billion/sec 69.31
Floating-point performance 544.5 gflops 2,218 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 1800 MHz 5012 MHz
Memory bandwidth 160.4 GB/s
Shared memory -
DirectX 12 API 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.1.126
CUDA + 5.2
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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