Quadro K620M vs Radeon R7 M340

If you are going to buy a new graphics card and are choosing between Quadro K620M and Radeon R7 M340, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Quadro K620M stacks up against Radeon R7 M340, check out specs charts below.

Quadro K620M and Radeon R7 M340 are Laptop Graphics Cards

Note: Quadro K620M and Radeon R7 M340 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 R7 M340 here:

Main Specs

  Quadro K620M Radeon R7 M340
Power consumption (TDP) 30 Watt
Interface MXM-A (3.0) PCIe 3.0 x8
Supplementary power connectors None None
Memory type DDR3 DDR3
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 R7 M340 uses PCIe 3.0 x8 interface.
  • Radeon R7 M340 has 2 GB more memory, than Quadro K620M.
  • Quadro K620M is used in Mobile workstations, and Radeon R7 M340 - in Laptops.
  • Quadro K620M is build with Maxwell architecture, and Radeon R7 M340 - with GCN.
  • Core clock speed of Quadro K620M is 8 MHz higher, than Radeon R7 M340.
  • Quadro K620M and Radeon R7 M340 are manufactured by 28 nm process technology.
  • Memory clock speed of Quadro K620M is 1000 MHz higher, than Radeon R7 M340.

Game benchmarks

high / 1080p 3−4 0−1
ultra / 1080p 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 1−2
medium / 1080p 5−6 0−1
The average gaming FPS of Quadro K620M in Assassin's Creed Odyssey is 1400% more, than Radeon R7 M340.

Full Specs

  Quadro K620M Radeon R7 M340
Architecture Maxwell GCN
Code name GM108 Meso Pro DDR3
Type Mobile workstation Laptop
Release date 1 March 2015 16 June 2015
Pipelines 384 320
Core clock speed 1029 MHz 1021 MHz
Boost Clock 1124 MHz 1021 MHz
Transistor count 950 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 17.16
Floating-point performance 863.2 gflops 549.1 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 1000 MHz
Memory bandwidth 14.4 GB/s 16 GB/s
Shared memory - -
DirectX 12
Shader Model 5 5.1
OpenGL 4.5 4.4
OpenCL 1.2 Not Listed
Vulkan 1.1.126 +
CUDA +
FreeSync +
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 92 Mh/s 74 Mh/s
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 6
Display Port 1.2
nView Display Management +
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