Iris Graphics 540 vs Radeon HD 7990

In this comparison between Iris Graphics 540 and Radeon HD 7990 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Iris Graphics 540 will be the best choice, for others Radeon HD 7990 will be their preference. Study the comparison tables below and make your choice.

Iris Graphics 540 is a Laptop Graphics Card

Note: Iris Graphics 540 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 540 here:

Main Specs

  Iris Graphics 540 Radeon HD 7990
Power consumption (TDP) 15 Watt 375 Watt
Interface PCIe 3.0 x1 PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type eDRAM GDDR5
Maximum RAM amount 64 MB 3 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 7990 has 2400% more power consumption, than Iris Graphics 540.
  • Iris Graphics 540 is connected by PCIe 3.0 x1, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
  • Iris Graphics 540 has 61 GB more memory, than Radeon HD 7990.
  • Iris Graphics 540 is used in Laptops, and Radeon HD 7990 - in Desktops.
  • Iris Graphics 540 is build with Gen. 9 Skylake architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of Radeon HD 7990 is 650 MHz higher, than Iris Graphics 540.
  • Iris Graphics 540 is manufactured by 14 nm process technology, and Radeon HD 7990 - by 28 nm process technology.

Game benchmarks

high / 1080p 8−9 35−40
ultra / 1080p 5−6 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 20−22 60−65
medium / 1080p 10−12 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 272% more, than Iris Graphics 540.

Full Specs

  Iris Graphics 540 Radeon HD 7990
Architecture Gen. 9 Skylake GCN 1.0
Code name Skylake GT3e Malta
Type Laptop Desktop
Release date 1 September 2015 24 April 2013
Pipelines 48 2048
Core clock speed 300 MHz 950 MHz
Boost Clock 1050 MHz 1000 MHz
Transistor count 189 million 4,313 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 50.40 128.0
Floating-point performance 2x 4,096 gflops
Length 307 mm
Memory bus width 384 Bit
Memory clock speed 6000 MHz
Memory bandwidth 288.0 GB/s
Shared memory +
DirectX 12 (12_1) 12 (11_1)
Shader Model 6.4 5.1
OpenGL 4.6 4.6
OpenCL 2.1 1.2
Vulkan 1.1.97 1.2.131
Bitcoin / BTC (SHA256) 459 Mh/s
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
Quick Sync +
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