Quadro K420 vs Quadro K620

When comparing Quadro K420 and Quadro K620, 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 Quadro K420 and Quadro K620 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  Quadro K420 Quadro K620
Power consumption (TDP) 41 Watt 41 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors None None
Memory type 128 Bit 128 Bit
Maximum RAM amount 1 GB/2 GB 2 GB
Display Connectors 1x DVI, 1x DisplayPort 1x DVI, 1x DisplayPort
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  • Both graphics cards have the same power consumption of 41 Watt.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Quadro K620 has 1 GB more memory, than Quadro K420.
  • Both cards are used in Desktops.
  • Quadro K420 is build with Kepler architecture, and Quadro K620 - with Maxwell.
  • Core clock speed of Quadro K620 is 182 MHz higher, than Quadro K420.
  • Quadro K420 and Quadro K620 are manufactured by 28 nm process technology.
  • Both graphics cards are the same length of 160 mm.
  • Memory clock speed of Quadro K620 is 18 MHz higher, than Quadro K420.

Game benchmarks

high / 1080p 0−1 10−12
ultra / 1080p 0−1 6−7
QHD / 1440p 0−1 1−2
low / 720p 9−10 24−27
medium / 1080p 1−2 14−16
The average gaming FPS of Quadro K620 in Assassin's Creed Odyssey is 300% more, than Quadro K420.

Full Specs

  Quadro K420 Quadro K620
Architecture Kepler Maxwell
Code name GK107 GM107
Type Workstation Workstation
Release date 22 July 2014 22 July 2014
Pipelines 192 384
Core clock speed 876 MHz 1058 MHz
Boost Clock 1124 MHz
Transistor count 1,270 million 1,870 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 14.02 26.98
Floating-point performance 336.4 gflops 863.2 gflops
Length 160 mm 160 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1782 MHz 1800 MHz
DirectX 12 12
Shader Model 5 5
OpenGL 4.5 4.5
OpenCL 1.2 1.2
Vulkan + +
CUDA 3.0 5.0
Bitcoin / BTC (SHA256) 11 Mh/s 104 Mh/s
3D Vision Pro + +
Mosaic + +
Width 1" (2.5 cm) 1" (2.5 cm)
Number of simultaneous displays 4 4
nView Desktop Management + +
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