GeForce GT 755M vs Quadro K420

If you are going to buy a new graphics card and are choosing between GeForce GT 755M and Quadro K420, 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 755M stacks up against Quadro K420, check out specs charts below.

GeForce GT 755M is a Laptop Graphics Card

Note: GeForce GT 755M 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 755M here:

Main Specs

  GeForce GT 755M Quadro K420
Power consumption (TDP) 50 Watt 41 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None
Memory type GDDR5 128 Bit
Maximum RAM amount 4 GB 1 GB/2 GB
Display Connectors No outputs 1x DVI, 1x DisplayPort
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  • GeForce GT 755M has 21% more power consumption, than Quadro K420.
  • GeForce GT 755M is connected by PCIe 3.0 x16, and Quadro K420 uses PCIe 2.0 x16 interface.
  • GeForce GT 755M has 3 GB more memory, than Quadro K420.
  • GeForce GT 755M is used in Laptops, and Quadro K420 - in Desktops.
  • GeForce GT 755M and Quadro K420 are build with Kepler architecture.
  • Core clock speed of GeForce GT 755M is 104 MHz higher, than Quadro K420.
  • GeForce GT 755M and Quadro K420 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 755M is 3618 MHz higher, than Quadro K420.

Game benchmarks

high / 1080p 7−8 0−1
ultra / 1080p 4−5 0−1
QHD / 1440p 0−1 0−1
low / 720p 18−20 9−10
medium / 1080p 9−10 1−2
The average gaming FPS of GeForce GT 755M in Assassin's Creed Odyssey is 180% more, than Quadro K420.

Full Specs

  GeForce GT 755M Quadro K420
Architecture Kepler Kepler
Code name N14P- GK107
Type Laptop Workstation
Release date 25 June 2013 22 July 2014
Pipelines 384 192
Core clock speed 980 MHz 876 MHz
Transistor count 1,270 million 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 31.36 14.02
Floating-point performance 752.6 gflops 336.4 gflops
Length 160 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 5400 MHz 1782 MHz
Memory bandwidth 86.4 GB/s
Shared memory -
DirectX 12 API 12
Shader Model 5.1 5
OpenGL 4.5 4.5
OpenCL 1.1 1.2
Vulkan 1.1.126 +
CUDA + 3.0
Bus support PCI Express 3.0, PCI Express 2.0
HDMI +
Bitcoin / BTC (SHA256) 27 Mh/s 11 Mh/s
Laptop size medium sized
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
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