GeForce GT 745A vs Iris Pro Graphics 580

When comparing GeForce GT 745A and Iris Pro Graphics 580, 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 GeForce GT 745A and Iris Pro Graphics 580 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Pro Graphics 580 is a Laptop Graphics Card

Note: Iris Pro Graphics 580 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 Pro Graphics 580 here:

Main Specs

  GeForce GT 745A Iris Pro Graphics 580
Power consumption (TDP) 33 Watt 15 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x1
Memory type DDR3 DDR3L/LPDDR3/DDR4
Maximum RAM amount 2 GB 64 GB
Display Connectors No outputs No outputs
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  • GeForce GT 745A has 120% more power consumption, than Iris Pro Graphics 580.
  • GeForce GT 745A is connected by PCIe 3.0 x16, and Iris Pro Graphics 580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics 580 has 62 GB more memory, than GeForce GT 745A.
  • GeForce GT 745A is used in Desktops, and Iris Pro Graphics 580 - in Laptops.
  • GeForce GT 745A is build with Kepler architecture, and Iris Pro Graphics 580 - with Gen. 9 Skylake.
  • Core clock speed of GeForce GT 745A is 487 MHz higher, than Iris Pro Graphics 580.
  • GeForce GT 745A is manufactured by 28 nm process technology, and Iris Pro Graphics 580 - by 14 nm process technology.

Game benchmarks

high / 1080p 2−3 9−10
ultra / 1080p 0−1 5−6
QHD / 1440p 0−1 0−1
low / 720p 12−14 20−22
medium / 1080p 4−5 10−12
The average gaming FPS of Iris Pro Graphics 580 in Assassin's Creed Odyssey is 116% more, than GeForce GT 745A.

Full Specs

  GeForce GT 745A Iris Pro Graphics 580
Architecture Kepler Gen. 9 Skylake
Code name GK107 Skylake GT4e
Type Desktop Laptop
Release date 26 August 2013 1 September 2015
Pipelines 384 72
Core clock speed 837 MHz 350 MHz
Boost Clock 915 MHz 1050 MHz
Transistor count 1,270 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 29.28 72.00
Floating-point performance 642.8 gflops
Memory bus width 128 Bit
Memory clock speed 1800 MHz
Memory bandwidth 28.8 GB/s
Shared memory +
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.1.126 1.1.97
CUDA 3.0
Bitcoin / BTC (SHA256) 26 Mh/s
Quick Sync +
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