Quadro K620M vs Radeon HD 7850M

Find out if it is worth upgrading your current GPU setup by comparing Quadro K620M and Radeon HD 7850M. 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 K620M and Radeon HD 7850M. 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 K620M and Radeon HD 7850M are Laptop Graphics Cards

Note: Quadro K620M and Radeon HD 7850M are only used in laptop graphics. They have 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 K620M or Radeon HD 7850M here:

Main Specs

  Quadro K620M Radeon HD 7850M
Power consumption (TDP) 30 Watt 40 Watt
Interface MXM-A (3.0) PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Radeon HD 7850M has 33% more power consumption, than Quadro K620M.
  • Quadro K620M is connected by MXM-A (3.0), and Radeon HD 7850M uses PCIe 3.0 x16 interface.
  • Quadro K620M and Radeon HD 7850M have maximum RAM of 2 GB.
  • Quadro K620M is used in Mobile workstations, and Radeon HD 7850M - in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon HD 7850M - with GCN.
  • Core clock speed of Quadro K620M is 354 MHz higher, than Radeon HD 7850M.
  • Quadro K620M and Radeon HD 7850M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7850M is 2000 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 6−7
ultra / 1080p 1−2 3−4
QHD / 1440p 0−1 0−1
low / 720p 14−16 14−16
medium / 1080p 5−6 7−8
The average gaming FPS of Radeon HD 7850M in Assassin's Creed Odyssey is 33% more, than Quadro K620M.

Full Specs

  Quadro K620M Radeon HD 7850M
Architecture Maxwell GCN
Code name GM108 Heathrow Pro
Type Mobile workstation Laptop
Release date 1 March 2015 24 April 2012
Pipelines 384 640
Core clock speed 1029 MHz 675 MHz
Boost Clock 1124 MHz
Transistor count 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 27.00
Floating-point performance 863.2 gflops 864.0 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 4000 MHz
Memory bandwidth 14.4 GB/s 64 GB/s
Shared memory - -
DirectX 12 12 (11_1)
Shader Model 5 5.1
OpenGL 4.5 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA +
Bitcoin / BTC (SHA256) 92 Mh/s
Laptop size large
Optimus +
Display Port 1.2
nView Display Management +
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