Iris Plus Graphics 640 vs Radeon HD 7770M

When comparing Iris Plus Graphics 640 and Radeon HD 7770M, 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 Plus Graphics 640 and Radeon HD 7770M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Plus Graphics 640 and Radeon HD 7770M are Laptop Graphics Cards

Note: Iris Plus Graphics 640 and Radeon HD 7770M 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 Radeon HD 7770M here:

Main Specs

  Iris Plus Graphics 640 Radeon HD 7770M
Power consumption (TDP) 15 Watt 32 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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  • Radeon HD 7770M has 113% more power consumption, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is connected by PCIe 3.0 x1, and Radeon HD 7770M uses PCIe 2.0 x16 interface.
  • Iris Plus Graphics 640 has 31 GB more memory, than Radeon HD 7770M.
  • Both cards are used in Laptops.
  • Iris Plus Graphics 640 is build with Gen. 9.5 Kaby Lake architecture, and Radeon HD 7770M - with GCN.
  • Core clock speed of Radeon HD 7770M is 375 MHz higher, than Iris Plus Graphics 640.
  • Iris Plus Graphics 640 is manufactured by 14 nm process technology, and Radeon HD 7770M - by 28 nm process technology.

Game benchmarks

high / 1080p 6−7 9−10
ultra / 1080p 4−5 5−6
QHD / 1440p 0−1 0−1
low / 720p 16−18 21−24
medium / 1080p 8−9 10−12
The average gaming FPS of Radeon HD 7770M in Assassin's Creed Odyssey is 33% more, than Iris Plus Graphics 640.

Full Specs

  Iris Plus Graphics 640 Radeon HD 7770M
Architecture Gen. 9.5 Kaby Lake GCN
Code name Kaby Lake GT3e Chelsea XT
Type Laptop Laptop
Release date 3 January 2017 24 April 2012
Pipelines 48 512
Core clock speed 300 MHz 675 MHz
Boost Clock 1050 MHz
Transistor count 189 million 1,500 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 52.80 21.60
Floating-point performance 691.2 gflops
Memory bus width 64/128 Bit 128 Bit
Memory clock speed 4000 MHz
Memory bandwidth 64 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 1.1.103 1.2.131
Laptop size medium sized
Quick Sync +
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