Iris Graphics 6100 vs Radeon HD 4870

When comparing Iris Graphics 6100 and Radeon HD 4870, 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 Iris Graphics 6100 and Radeon HD 4870 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Graphics 6100 is a Laptop Graphics Card

Note: Iris Graphics 6100 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 Iris Graphics 6100 here:

Main Specs

  Iris Graphics 6100 Radeon HD 4870
Power consumption (TDP) 15 Watt 150 Watt
Interface PCIe 2.0 x1 PCIe 2.0 x16
Supplementary power connectors None 2x 6-pin
Memory type System Shared GDDR5
Maximum RAM amount 1 GB
Display Connectors No outputs 2x DVI, 1x S-Video
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  • Radeon HD 4870 has 900% more power consumption, than Iris Graphics 6100.
  • Iris Graphics 6100 is connected by PCIe 2.0 x1, and Radeon HD 4870 uses PCIe 2.0 x16 interface.
  • Iris Graphics 6100 is used in Laptops, and Radeon HD 4870 - in Desktops.
  • Iris Graphics 6100 is build with Gen. 8 Broadwell architecture, and Radeon HD 4870 - with TeraScale.
  • Core clock speed of Radeon HD 4870 is 450 MHz higher, than Iris Graphics 6100.
  • Iris Graphics 6100 is manufactured by 14 nm process technology, and Radeon HD 4870 - by 55 nm process technology.

Game benchmarks

high / 1080p 4−5 3−4
ultra / 1080p 3−4 1−2
QHD / 1440p 0−1 0−1
low / 720p 12−14 14−16
medium / 1080p 5−6 6−7
Iris Graphics 6100 and Radeon HD 4870 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Iris Graphics 6100 Radeon HD 4870
Architecture Gen. 8 Broadwell TeraScale
Code name Broadwell GT3 RV770
Type Laptop Desktop
Release date 5 January 2015 25 June 2008
Pipelines 48 800
Core clock speed 300 MHz 750 MHz
Boost Clock 1100 MHz
Transistor count 189 million 956 million
Manufacturing process technology 14 nm 55 nm
Texture fill rate 52.80 30.00
Floating-point performance 1,200.0 gflops
Length 250 mm
Memory bus width 64/128 Bit 256 Bit
Memory clock speed 3600 MHz
Memory bandwidth 115.2 GB/s
Shared memory +
DirectX 12 (11_1) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.4 3.3
OpenCL 2.0 1.1
Vulkan 1.1.80 N/A
Quick Sync +
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