Radeon HD 7770M vs UHD Graphics 620

When comparing Radeon HD 7770M and UHD Graphics 620, 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 Radeon HD 7770M and UHD Graphics 620 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon HD 7770M and UHD Graphics 620 are Laptop Graphics Cards

Note: Radeon HD 7770M and UHD Graphics 620 are only used in laptop graphics. They have 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 HD 7770M or UHD Graphics 620 here:

Main Specs

  Radeon HD 7770M UHD Graphics 620
Power consumption (TDP) 32 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Memory type GDDR5 LPDDR3/DDR4
Maximum RAM amount 1 GB 32 GB
Display Connectors No outputs No outputs
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  • Radeon HD 7770M has 113% more power consumption, than UHD Graphics 620.
  • Radeon HD 7770M 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 7770M.
  • Both cards are used in Laptops.
  • Radeon HD 7770M is build with GCN architecture, and UHD Graphics 620 - with Gen. 9.5.
  • Core clock speed of Radeon HD 7770M is 375 MHz higher, than UHD Graphics 620.
  • Radeon HD 7770M is manufactured by 28 nm process technology, and UHD Graphics 620 - by 14 nm process technology.

Game benchmarks

high / 1080p 9−10 2−3
ultra / 1080p 5−6 0−1
QHD / 1440p 0−1 0−1
low / 720p 21−24 12−14
medium / 1080p 10−12 3−4
The average gaming FPS of Radeon HD 7770M in Assassin's Creed Odyssey is 133% more, than UHD Graphics 620.

Full Specs

  Radeon HD 7770M UHD Graphics 620
Architecture GCN Gen. 9.5
Code name Chelsea XT Kaby-Lake-Refresh GT2
Type Laptop Laptop
Release date 24 April 2012 1 September 2017
Pipelines 512 24
Core clock speed 675 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 1,500 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 21.60 27.60
Floating-point performance 691.2 gflops
Memory bus width 128 Bit 64/128 Bit
Memory clock speed 4000 MHz
Memory bandwidth 64 GB/s
Shared memory - +
DirectX 12 (11_1) 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.2.131 1.1.103
Laptop size medium sized
Quick Sync +
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