Quadro K620 vs Radeon R9 M395X

Find out if it is worth upgrading your current GPU setup by comparing Quadro K620 and Radeon R9 M395X. 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 K620 and Radeon R9 M395X. 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.

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 K620 Radeon R9 M395X
Power consumption (TDP) 41 Watt 250 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors None None
Memory type 128 Bit GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 1x DVI, 1x DisplayPort No outputs
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  • Radeon R9 M395X has 509% more power consumption, than Quadro K620.
  • Quadro K620 is connected by PCIe 2.0 x16, and Radeon R9 M395X uses PCIe 3.0 x16 interface.
  • Radeon R9 M395X has 2 GB more memory, than Quadro K620.
  • Quadro K620 is used in Desktops, and Radeon R9 M395X - in Laptops.
  • Quadro K620 is build with Maxwell architecture, and Radeon R9 M395X - with GCN 3.
  • Core clock speed of Quadro K620 is 335 MHz higher, than Radeon R9 M395X.
  • Quadro K620 and Radeon R9 M395X are manufactured by 28 nm process technology.
  • Memory clock speed of Quadro K620 is 550 MHz higher, than Radeon R9 M395X.

Game benchmarks

high / 1080p 10−12 24−27
ultra / 1080p 6−7 14−16
QHD / 1440p 1−2 9−10
4K / 2160p 6−7
low / 720p 24−27 45−50
medium / 1080p 14−16 30−35
The average gaming FPS of Radeon R9 M395X in Assassin's Creed Odyssey is 136% more, than Quadro K620.

Full Specs

  Quadro K620 Radeon R9 M395X
Architecture Maxwell GCN 3
Code name GM107 Amethyst XT
Type Workstation Laptop
Release date 22 July 2014 16 October 2014
Pipelines 384 2048
Core clock speed 1058 MHz 723 MHz
Boost Clock 1124 MHz
Transistor count 1,870 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 26.98 92.54
Floating-point performance 863.2 gflops 2,961 gflops
Length 160 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1800 MHz 1250 MHz
Memory bandwidth 160.0 GB/s
Shared memory -
DirectX 12
Shader Model 5 6.3
OpenGL 4.5 4.4
OpenCL 1.2 Not Listed
Vulkan +
CUDA 5.0
FreeSync +
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 104 Mh/s 413 Mh/s
Laptop size large
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
TrueAudio +
ZeroCore +
Switchable graphics +
Mantle +
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
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