Quadro K420 vs Radeon HD 5970

Find out if it is worth upgrading your current GPU setup by comparing Quadro K420 and Radeon HD 5970. 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 Quadro K420 and Radeon HD 5970. 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.

Main Specs

  Quadro K420 Radeon HD 5970
Power consumption (TDP) 41 Watt 294 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors None 1x 6-pin + 1x 8-pin
Memory type 128 Bit GDDR5
Maximum RAM amount 1 GB/2 GB 1 GB
Display Connectors 1x DVI, 1x DisplayPort 2x DVI, 1x mini-DisplayPort
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  • Radeon HD 5970 has 617% more power consumption, than Quadro K420.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Quadro K420 and Radeon HD 5970 have maximum RAM of 1 GB.
  • Both cards are used in Desktops.
  • Quadro K420 is build with Kepler architecture, and Radeon HD 5970 - with TeraScale 2.
  • Core clock speed of Quadro K420 is 151 MHz higher, than Radeon HD 5970.
  • Quadro K420 is manufactured by 28 nm process technology, and Radeon HD 5970 - by 40 nm process technology.
  • Radeon HD 5970 is 145 mm longer, than Quadro K420.
  • Memory clock speed of Radeon HD 5970 is 2218 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 Radeon HD 5970 in Assassin's Creed Odyssey is 300% more, than Quadro K420.

Full Specs

  Quadro K420 Radeon HD 5970
Architecture Kepler TeraScale 2
Code name GK107 Hemlock
Type Workstation Desktop
Release date 22 July 2014 18 November 2009
Pipelines 192 1600
Core clock speed 876 MHz 725 MHz
Transistor count 1,270 million 2,154 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 14.02 58.00
Floating-point performance 336.4 gflops 2x 2,320.0 gflops
Length 160 mm 305 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1782 MHz 4000 MHz
Memory bandwidth 128.0 GB/s
DirectX 12 11.2 (11_0)
Shader Model 5 5.0
OpenGL 4.5 4.4
OpenCL 1.2 1.2
Vulkan + N/A
CUDA 3.0
Bitcoin / BTC (SHA256) 11 Mh/s
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
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