Mobility Radeon HD 4870 X2 vs UHD Graphics 620

If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and UHD Graphics 620, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Mobility Radeon HD 4870 X2 stacks up against UHD Graphics 620, check out specs charts below.

Mobility Radeon HD 4870 X2 and UHD Graphics 620 are Laptop Graphics Cards

Note: Mobility Radeon HD 4870 X2 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 Mobility Radeon HD 4870 X2 or UHD Graphics 620 here:

Main Specs

  Mobility Radeon HD 4870 X2 UHD Graphics 620
Power consumption (TDP) 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Memory type GDDR3, GDDR5 LPDDR3/DDR4
Maximum RAM amount 2 GB 32 GB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and UHD Graphics 620 uses PCIe 3.0 x1 interface.
  • UHD Graphics 620 has 30 GB more memory, than Mobility Radeon HD 4870 X2.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and UHD Graphics 620 - with Gen. 9.5.
  • Core clock speed of Mobility Radeon HD 4870 X2 is 250 MHz higher, than UHD Graphics 620.
  • Mobility Radeon HD 4870 X2 is manufactured by 55 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 12−14 3−4
The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 150% more, than UHD Graphics 620.

Full Specs

  Mobility Radeon HD 4870 X2 UHD Graphics 620
Architecture Terascale 1 Gen. 9.5
Code name M98-XT Kaby-Lake-Refresh GT2
Type Laptop Laptop
Release date 9 January 2009 1 September 2017
Pipelines 1600 24
Core clock speed 550 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 956 million 189 million
Manufacturing process technology 55 nm 14 nm
Texture fill rate 22.00 27.60
Floating-point performance 2x 880.0 gflops
Memory bus width 256 Bit 64/128 Bit
Memory clock speed 888 MHz
Memory bandwidth 89.6 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
Laptop size large
Quick Sync +
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