GeForce GT 645M vs Quadro FX 4800

When comparing GeForce GT 645M and Quadro FX 4800, 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 645M and Quadro FX 4800 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

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 Quadro FX 4800
Power consumption (TDP) 32 Watt 150 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\GDDR5 GDDR3
Maximum RAM amount 2 GB 1536 MB
Display Connectors No outputs 1x DVI, 2x DisplayPort, 1x S-Video
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  • Quadro FX 4800 has 368% more power consumption, than GeForce GT 645M.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and Quadro FX 4800 uses PCIe 2.0 x16 interface.
  • Quadro FX 4800 has 1534 GB more memory, than GeForce GT 645M.
  • GeForce GT 645M is used in Laptops, and Quadro FX 4800 - in Desktops.
  • GeForce GT 645M is build with Kepler architecture, and Quadro FX 4800 - with Tesla 2.0.
  • GeForce GT 645M is manufactured by 28 nm process technology, and Quadro FX 4800 - by 55 nm process technology.
  • Memory clock speed of GeForce GT 645M is 200 MHz higher, than Quadro FX 4800.

Game benchmarks

high / 1080p 1−2 2−3
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 12−14
medium / 1080p 2−3 3−4
The average gaming FPS of Quadro FX 4800 in Assassin's Creed Odyssey is 20% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M Quadro FX 4800
Architecture Kepler Tesla 2.0
Code name N13P-GS GT200B
Type Laptop Workstation
Release date 22 March 2012 11 November 2008
Pipelines 384 192
Core clock speed 602 MHz
Transistor count 1,270 million 1,400 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 22.7 billion/sec 38.53
Floating-point performance 544.5 gflops 462.3 gflops
Length 267 mm
Memory bus width 128bit 384 Bit
Memory clock speed 1800 MHz 1600 MHz
Memory bandwidth 76.8 GB/s
Shared memory -
DirectX 12 API 11.1 (10_0)
Shader Model 5.1 4.0
OpenGL 4.5 3.3
OpenCL 1.1 1.1
Vulkan 1.1.126 N/A
CUDA + 1.3
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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