Radeon HD 6870 vs UHD Graphics 620

When choosing between Radeon HD 6870 and UHD Graphics 620, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 6870 and UHD Graphics 620.

UHD Graphics 620 is a Laptop Graphics Card

Note: UHD Graphics 620 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 UHD Graphics 620 here:

Main Specs

  Radeon HD 6870 UHD Graphics 620
Power consumption (TDP) 151 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Supplementary power connectors 2x 6-pin
Memory type GDDR5 LPDDR3/DDR4
Maximum RAM amount 1 GB 32 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort No outputs
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  • Radeon HD 6870 has 906% more power consumption, than UHD Graphics 620.
  • Radeon HD 6870 is connected by PCIe 2.0 x16, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
  • UHD Graphics 620 has 31 GB more memory, than Radeon HD 6870.
  • Radeon HD 6870 is used in Desktops, and UHD Graphics 620 - in Laptops.
  • Radeon HD 6870 is build with Terascale 2 architecture, and UHD Graphics 620 - with Gen. 9.5.
  • Radeon HD 6870 is manufactured by 40 nm process technology, and UHD Graphics 620 - by 14 nm process technology.

Game benchmarks

high / 1080p 10−12 2−3
ultra / 1080p 6−7 0−1
QHD / 1440p 1−2 0−1
low / 720p 24−27 12−14
medium / 1080p 12−14 3−4
The average gaming FPS of Radeon HD 6870 in Assassin's Creed Odyssey is 166% more, than UHD Graphics 620.

Full Specs

  Radeon HD 6870 UHD Graphics 620
Architecture Terascale 2 Gen. 9.5
Code name RV940 Barts Kaby-Lake-Refresh GT2
Type Desktop Laptop
Release date 22 October 2010 1 September 2017
Pipelines 1120 24
Core clock speed 300 MHz
Boost Clock 900 MHz 1150 MHz
Transistor count 1,700 million 189 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 50.40 27.60
Floating-point performance 2,016.0 gflops
Length 220 mm
Memory bus width 256 Bit 64/128 Bit
Memory clock speed 1050 MHz
Memory bandwidth 134.4 GB/s
Shared memory - +
DirectX 12 (12_1)
Shader Model 5.0 6.4
OpenGL 4.4 4.6
OpenCL 1.2 2.1
Vulkan 1.1.103
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 213 Mh/s
Eyefinity +
Design reference
CrossFire +
Quick Sync +
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