Quadro K620M vs Radeon R9 M275

When comparing Quadro K620M and Radeon R9 M275, 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 K620M and Radeon R9 M275 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Quadro K620M and Radeon R9 M275 are Laptop Graphics Cards

Note: Quadro K620M and Radeon R9 M275 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 R9 M275 here:

Main Specs

  Quadro K620M Radeon R9 M275
Power consumption (TDP) 30 Watt
Interface MXM-A (3.0) PCIe 3.0 x16
Supplementary power connectors None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Quadro K620M is connected by MXM-A (3.0), and Radeon R9 M275 uses PCIe 3.0 x16 interface.
  • Radeon R9 M275 has 2 GB more memory, than Quadro K620M.
  • Quadro K620M is used in Mobile workstations, and Radeon R9 M275 - in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon R9 M275 - with GCN.
  • Core clock speed of Quadro K620M is 104 MHz higher, than Radeon R9 M275.
  • Quadro K620M and Radeon R9 M275 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon R9 M275 is 2500 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 0−1
ultra / 1080p 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 12−14
medium / 1080p 5−6 3−4
The average gaming FPS of Quadro K620M in Assassin's Creed Odyssey is 25% more, than Radeon R9 M275.

Full Specs

  Quadro K620M Radeon R9 M275
Architecture Maxwell GCN
Code name GM108 Venus
Type Mobile workstation Laptop
Release date 1 March 2015 1 August 2014
Pipelines 384 640
Core clock speed 1029 MHz 925 MHz
Boost Clock 1124 MHz 925 MHz
Transistor count 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 37.00
Floating-point performance 863.2 gflops 1,184 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 4500 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 122 Mh/s
Laptop size large
Optimus +
Display Port 1.2
nView Display Management +
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