Radeon HD 4830 vs UHD Graphics 620

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 4830 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 4830 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 4830 UHD Graphics 620
Power consumption (TDP) 95 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Supplementary power connectors 1x 6-pin
Memory type GDDR3 LPDDR3/DDR4
Maximum RAM amount 512 MB 32 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4830 has 533% more power consumption, than UHD Graphics 620.
  • Radeon HD 4830 is connected by PCIe 2.0 x16, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
  • Radeon HD 4830 has 480 GB more memory, than UHD Graphics 620.
  • Radeon HD 4830 is used in Desktops, and UHD Graphics 620 - in Laptops.
  • Radeon HD 4830 is build with TeraScale architecture, and UHD Graphics 620 - with Gen. 9.5.
  • Core clock speed of Radeon HD 4830 is 275 MHz higher, than UHD Graphics 620.
  • Radeon HD 4830 is manufactured by 55 nm process technology, and UHD Graphics 620 - by 14 nm process technology.

Game benchmarks

high / 1080p 0−1 2−3
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 10−12 12−14
medium / 1080p 2−3 3−4
The average gaming FPS of UHD Graphics 620 in Assassin's Creed Odyssey is 33% more, than Radeon HD 4830.

Full Specs

  Radeon HD 4830 UHD Graphics 620
Architecture TeraScale Gen. 9.5
Code name RV770 Kaby-Lake-Refresh GT2
Type Desktop Laptop
Release date 21 October 2008 1 September 2017
Pipelines 640 24
Core clock speed 575 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 956 million 189 million
Manufacturing process technology 55 nm 14 nm
Texture fill rate 18.40 27.60
Floating-point performance 736.0 gflops
Length 246 mm
Memory bus width 256 Bit 64/128 Bit
Memory clock speed 1800 MHz
Memory bandwidth 57.6 GB/s
Shared memory +
DirectX 10.1 (10_1) 12 (12_1)
Shader Model 4.1 6.4
OpenGL 3.3 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.103
Quick Sync +
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