Iris Plus Graphics 640 vs Quadro K620

When comparing Iris Plus Graphics 640 and Quadro K620, 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 Iris Plus Graphics 640 and Quadro K620 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Plus Graphics 640 is a Laptop Graphics Card

Note: Iris Plus Graphics 640 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 Iris Plus Graphics 640 here:

Main Specs

  Iris Plus Graphics 640 Quadro K620
Power consumption (TDP) 15 Watt 41 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Supplementary power connectors None
Memory type DDR3L/LPDDR3/DDR4 128 Bit
Maximum RAM amount 32 GB 2 GB
Display Connectors No outputs 1x DVI, 1x DisplayPort
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  • Quadro K620 has 173% more power consumption, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is connected by PCIe 3.0 x1, and Quadro K620 uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 640 has 30 GB more memory, than Quadro K620.
  • Iris Plus Graphics 640 is used in Laptops, and Quadro K620 - in Desktops.
  • Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Quadro K620 - with Maxwell.
  • Core clock speed of Quadro K620 is 758 MHz higher, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Quadro K620 - by 28 nm process technology.

Game benchmarks

high / 1080p 6−7 10−12
ultra / 1080p 4−5 6−7
QHD / 1440p 0−1 1−2
low / 720p 16−18 24−27
medium / 1080p 8−9 14−16
The average gaming FPS of Quadro K620 in Assassin's Creed Odyssey is 55% more, than Iris Plus Graphics 640.

Full Specs

  Iris Plus Graphics 640 Quadro K620
Architecture Gen. 9.5 Kaby Lake Maxwell
Code name Kaby Lake GT3e GM107
Type Laptop Workstation
Release date 3 January 2017 22 July 2014
Pipelines 48 384
Core clock speed 300 MHz 1058 MHz
Boost Clock 1050 MHz 1124 MHz
Transistor count 189 million 1,870 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 52.80 26.98
Floating-point performance 863.2 gflops
Length 160 mm
Memory bus width 64/128 Bit 128 Bit
Memory clock speed 1800 MHz
Shared memory +
DirectX 12 (12_1) 12
Shader Model 6.4 5
OpenGL 4.6 4.5
OpenCL 2.1 1.2
Vulkan 1.1.103 +
CUDA 5.0
Bitcoin / BTC (SHA256) 104 Mh/s
Quick Sync +
3D Vision Pro +
Mosaic +
Width 1" (2.5 cm)
Number of simultaneous displays 4
nView Desktop Management +
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