Quadro M620 vs Radeon HD 7990

Find out if it is worth upgrading your current GPU setup by comparing Quadro M620 and Radeon HD 7990. 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 M620 and Radeon HD 7990. 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.

Quadro M620 is a Laptop Graphics Card

Note: Quadro M620 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 Quadro M620 here:

Main Specs

  Quadro M620 Radeon HD 7990
Power consumption (TDP) 30 Watt 375 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 7990 has 1150% more power consumption, than Quadro M620.
  • Radeon HD 7990 has 1 GB more memory, than Quadro M620.
  • Quadro M620 is used in Mobile workstations, and Radeon HD 7990 - in Desktops.
  • Quadro M620 is build with Maxwell architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of Quadro M620 is 68 MHz higher, than Radeon HD 7990.
  • Quadro M620 and Radeon HD 7990 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7990 is 988 MHz higher, than Quadro M620.

Game benchmarks

high / 1080p 14−16 35−40
ultra / 1080p 8−9 21−24
QHD / 1440p 3−4 16−18
4K / 2160p 10−11
low / 720p 30−35 60−65
medium / 1080p 18−20 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 140% more, than Quadro M620.

Full Specs

  Quadro M620 Radeon HD 7990
Architecture Maxwell GCN 1.0
Code name Malta
Type Mobile workstation Desktop
Release date 13 January 2017 24 April 2013
Pipelines 512 2048
Core clock speed 1018 MHz 950 MHz
Boost Clock 1000 MHz
Transistor count 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 128.0
Floating-point performance 2x 4,096 gflops
Length 307 mm
Memory bus width 128 Bit 384 Bit
Memory clock speed 5012 MHz 6000 MHz
Memory bandwidth 80 GB/s 288.0 GB/s
Shared memory -
DirectX 12 12 (11_1)
Shader Model 5.0 5.1
OpenGL 4.5 4.6
OpenCL 1.2
Vulkan 1.2.131
Bitcoin / BTC (SHA256) 459 Mh/s
Laptop size large
Optimus +
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
Display Port 1.2
Mosaic +
nView Display Management +
3D Stereo +
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