Iris Plus Graphics 640 vs Mobility Radeon HD 4870

Find out if it is worth upgrading your current GPU setup by comparing Iris Plus Graphics 640 and Mobility Radeon HD 4870. 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 Iris Plus Graphics 640 and Mobility Radeon HD 4870. 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.

Iris Plus Graphics 640 and Mobility Radeon HD 4870 are Laptop Graphics Cards

Note: Iris Plus Graphics 640 and Mobility Radeon HD 4870 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 Iris Plus Graphics 640 or Mobility Radeon HD 4870 here:

Main Specs

  Iris Plus Graphics 640 Mobility Radeon HD 4870
Power consumption (TDP) 15 Watt
Interface PCIe 3.0 x1 PCIe 2.0 x16
Memory type DDR3L/LPDDR3/DDR4 GDDR5
Maximum RAM amount 32 GB 1 GB
Display Connectors No outputs No outputs
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  • Iris Plus Graphics 640 is connected by PCIe 3.0 x1, and Mobility Radeon HD 4870 uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 640 has 31 GB more memory, than Mobility Radeon HD 4870.
  • Both cards are used in Laptops.
  • Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Mobility Radeon HD 4870 - with Terascale 1.
  • Core clock speed of Mobility Radeon HD 4870 is 250 MHz higher, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Mobility Radeon HD 4870 - by 55 nm process technology.

Game benchmarks

high / 1080p 6−7 7−8
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 16−18
medium / 1080p 8−9 8−9
Iris Plus Graphics 640 and Mobility Radeon HD 4870 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Iris Plus Graphics 640 Mobility Radeon HD 4870
Architecture Gen. 9.5 Kaby Lake Terascale 1
Code name Kaby Lake GT3e M98-XT
Type Laptop Laptop
Release date 3 January 2017 9 January 2009
Pipelines 48 800
Core clock speed 300 MHz 550 MHz
Boost Clock 1050 MHz
Transistor count 189 million 956 million
Manufacturing process technology 14 nm 55 nm
Texture fill rate 52.80 22.00
Floating-point performance 880.0 gflops
Memory bus width 64/128 Bit 256 Bit
Memory clock speed 888 MHz
Memory bandwidth 56.83 GB/s
Shared memory + -
DirectX 12 (12_1) 10.1 (10_1)
Shader Model 6.4 4.1
OpenGL 4.6 3.3
OpenCL 2.1 1.1
Vulkan 1.1.103 N/A
Laptop size large
Quick Sync +
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