Radeon HD 7970 vs UHD Graphics 620

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 7970 and UHD Graphics 620. 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 Radeon HD 7970 and UHD Graphics 620. 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.

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 7970 UHD Graphics 620
Power consumption (TDP) 300 Watt 15 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x1
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type GDDR5 LPDDR3/DDR4
Maximum RAM amount 3 GB 32 GB
Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort No outputs
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  • Radeon HD 7970 has 1900% more power consumption, than UHD Graphics 620.
  • Radeon HD 7970 is connected by PCIe 3.0 x16, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
  • UHD Graphics 620 has 29 GB more memory, than Radeon HD 7970.
  • Radeon HD 7970 is used in Desktops, and UHD Graphics 620 - in Laptops.
  • Radeon HD 7970 is build with GCN architecture, and UHD Graphics 620 - with Gen. 9.5.
  • Radeon HD 7970 is manufactured by 28 nm process technology, and UHD Graphics 620 - by 14 nm process technology.

Game benchmarks

high / 1080p 35−40 2−3
ultra / 1080p 21−24 0−1
QHD / 1440p 16−18 0−1
4K / 2160p 10−11
low / 720p 60−65 12−14
medium / 1080p 40−45 3−4
The average gaming FPS of Radeon HD 7970 in Assassin's Creed Odyssey is 683% more, than UHD Graphics 620.

Full Specs

  Radeon HD 7970 UHD Graphics 620
Architecture GCN Gen. 9.5
Code name Tahiti XT Kaby-Lake-Refresh GT2
Type Desktop Laptop
Release date 22 December 2011 1 September 2017
Pipelines 2048 24
Core clock speed 300 MHz
Boost Clock 925 MHz 1150 MHz
Transistor count 4,313 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 118.4 27.60
Floating-point performance 3,789 gflops
Length 274 mm
Memory bus width 384 Bit 64/128 Bit
Memory clock speed 1375 MHz
Memory bandwidth 264 GB/s
Shared memory - +
DirectX 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.1.103
FreeSync +
Bus support PCIe 2.1 x16
HDMI +
Bitcoin / BTC (SHA256) 485 Mh/s
Eyefinity +
Design reference
CrossFire +
Ethereum / ETH (DaggerHashimoto) 20.71 Mh/s
Quick Sync +
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