Quadro K420 vs Radeon Sky 500

In this comparison between Quadro K420 and Radeon Sky 500 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Quadro K420 will be the best choice, for others Radeon Sky 500 will be their preference. Study the comparison tables below and make your choice.

Main Specs

  Quadro K420 Radeon Sky 500
Power consumption (TDP) 41 Watt 150 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors None 1x 6-pin
Memory type 128 Bit GDDR5
Maximum RAM amount 1 GB/2 GB 4 GB
Display Connectors 1x DVI, 1x DisplayPort 1x DisplayPort
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  • Radeon Sky 500 has 265% more power consumption, than Quadro K420.
  • Quadro K420 is connected by PCIe 2.0 x16, and Radeon Sky 500 uses PCIe 3.0 x16 interface.
  • Radeon Sky 500 has 3 GB more memory, than Quadro K420.
  • Both cards are used in Desktops.
  • Quadro K420 is build with Kepler architecture, and Radeon Sky 500 - with GCN 1.0.
  • Core clock speed of Radeon Sky 500 is 74 MHz higher, than Quadro K420.
  • Quadro K420 and Radeon Sky 500 are manufactured by 28 nm process technology.
  • Radeon Sky 500 is 82 mm longer, than Quadro K420.
  • Memory clock speed of Radeon Sky 500 is 3018 MHz higher, than Quadro K420.

Game benchmarks

high / 1080p 0−1 35−40
ultra / 1080p 0−1 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 9−10 60−65
medium / 1080p 1−2 40−45
The average gaming FPS of Radeon Sky 500 in Assassin's Creed Odyssey is 940% more, than Quadro K420.

Full Specs

  Quadro K420 Radeon Sky 500
Architecture Kepler GCN 1.0
Code name GK107 Pitcairn
Type Workstation Desktop
Release date 22 July 2014 27 March 2013
Pipelines 192 1280
Core clock speed 876 MHz 950 MHz
Transistor count 1,270 million 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 14.02 76.00
Floating-point performance 336.4 gflops 2,432 gflops
Length 160 mm 242 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1782 MHz 4800 MHz
Memory bandwidth 154 GB/s
DirectX 12 12 (11_1)
Shader Model 5 5.1
OpenGL 4.5 4.6
OpenCL 1.2 1.2
Vulkan + 1.2.131
CUDA 3.0
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 11 Mh/s
Form factor full height / full length
DisplayPort count 1
Dual-link DVI support +
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
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