Quadro P620 vs Radeon R9 M395X

If you are going to buy a new graphics card and are choosing between Quadro P620 and Radeon R9 M395X, 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 P620 stacks up against Radeon R9 M395X, check out specs charts below.

Radeon R9 M395X is a Laptop Graphics Card

Note: Radeon R9 M395X 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 Radeon R9 M395X here:

Main Specs

  Quadro P620 Radeon R9 M395X
Power consumption (TDP) 40 Watt 250 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors 4x mini-DisplayPort No outputs
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  • Radeon R9 M395X has 525% more power consumption, than Quadro P620.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Quadro P620 and Radeon R9 M395X have maximum RAM of 4 GB.
  • Quadro P620 is used in Desktops, and Radeon R9 M395X - in Laptops.
  • Quadro P620 is build with Pascal architecture, and Radeon R9 M395X - with GCN 3.
  • Core clock speed of Quadro P620 is 454 MHz higher, than Radeon R9 M395X.
  • Quadro P620 is manufactured by 14 nm process technology, and Radeon R9 M395X - by 28 nm process technology.
  • Memory clock speed of Quadro P620 is 4750 MHz higher, than Radeon R9 M395X.

Game benchmarks

high / 1080p 18−20 24−27
ultra / 1080p 10−12 14−16
QHD / 1440p 5−6 9−10
4K / 2160p 4−5 6−7
low / 720p 35−40 45−50
medium / 1080p 21−24 30−35
The average gaming FPS of Radeon R9 M395X in Assassin's Creed Odyssey is 37% more, than Quadro P620.

Full Specs

  Quadro P620 Radeon R9 M395X
Architecture Pascal GCN 3
Code name GP107 Amethyst XT
Type Workstation Laptop
Release date 27 May 2019 16 October 2014
Pipelines 512 2048
Core clock speed 1177 MHz 723 MHz
Boost Clock 1442 MHz
Transistor count 3,300 million 5,000 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 43.33 92.54
Floating-point performance 1,490 gflops 2,961 gflops
Length 145 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 6000 MHz 1250 MHz
Memory bandwidth 80.13 GB/s 160.0 GB/s
Shared memory - -
DirectX 12 (12_1)
Shader Model 6.4 6.3
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
Vulkan 1.2.131
CUDA 6.1
FreeSync +
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 413 Mh/s
Laptop size large
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
TrueAudio +
ZeroCore +
Switchable graphics +
Mantle +
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