Mobility Radeon HD 4870 vs Radeon RX 480 mobile

When comparing Mobility Radeon HD 4870 and Radeon RX 480 mobile, 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 Mobility Radeon HD 4870 and Radeon RX 480 mobile is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Mobility Radeon HD 4870 and Radeon RX 480 mobile are Laptop Graphics Cards

Note: Mobility Radeon HD 4870 and Radeon RX 480 mobile 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 or Radeon RX 480 mobile here:

Main Specs

  Mobility Radeon HD 4870 Radeon RX 480 mobile
Power consumption (TDP) 100 Watt
Interface PCIe 2.0 x16 MXM-B (3.0)
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 8 GB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 4870 is connected by PCIe 2.0 x16, and Radeon RX 480 mobile uses MXM-B (3.0) interface.
  • Radeon RX 480 mobile has 7 GB more memory, than Mobility Radeon HD 4870.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 4870 is build with Terascale 1 architecture, and Radeon RX 480 mobile - with Polaris.
  • Mobility Radeon HD 4870 is manufactured by 55 nm process technology, and Radeon RX 480 mobile - by 14 nm process technology.
  • Memory clock speed of Radeon RX 480 mobile is 7112 MHz higher, than Mobility Radeon HD 4870.

Game benchmarks

high / 1080p 7−8 12−14
ultra / 1080p 4−5 7−8
QHD / 1440p 0−1 0−1
low / 720p 16−18 27−30
medium / 1080p 8−9 14−16
The average gaming FPS of Radeon RX 480 mobile in Assassin's Creed Odyssey is 77% more, than Mobility Radeon HD 4870.

Full Specs

  Mobility Radeon HD 4870 Radeon RX 480 mobile
Architecture Terascale 1 Polaris
Code name M98-XT Polaris
Type Laptop Laptop
Release date 9 January 2009 1 August 2016
Pipelines 800 2304
Core clock speed 550 MHz
Boost Clock 1077 MHz
Transistor count 956 million 5,700 million
Manufacturing process technology 55 nm 14 nm
Texture fill rate 22.00 155.1
Floating-point performance 880.0 gflops 4,963 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 888 MHz 8000 MHz
Memory bandwidth 56.83 GB/s 256.0 GB/s
Shared memory - -
DirectX 10.1 (10_1) 12 (12_0)
Shader Model 4.1 6.4
OpenGL 3.3 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
Laptop size large large
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