GeForce GT 740 vs Iris Pro Graphics 580

When choosing between GeForce GT 740 and Iris Pro Graphics 580, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 740 and Iris Pro Graphics 580.

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 740 Iris Pro Graphics 580
Power consumption (TDP) 64 Watt 15 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x1
Supplementary power connectors 1x 6-pin
Memory type GDDR5 DDR3L/LPDDR3/DDR4
Maximum RAM amount 1 GB 64 GB
Display Connectors 2x DVI, 1x mini-HDMI No outputs
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  • GeForce GT 740 has 326% more power consumption, than Iris Pro Graphics 580.
  • GeForce GT 740 is connected by PCIe 3.0 x16, and Iris Pro Graphics 580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics 580 has 63 GB more memory, than GeForce GT 740.
  • GeForce GT 740 is used in Desktops, and Iris Pro Graphics 580 - in Laptops.
  • GeForce GT 740 is build with Kepler architecture, and Iris Pro Graphics 580 - with Gen. 9 Skylake.
  • Core clock speed of GeForce GT 740 is 643 MHz higher, than Iris Pro Graphics 580.
  • GeForce GT 740 is manufactured by 28 nm process technology, and Iris Pro Graphics 580 - by 14 nm process technology.

Game benchmarks

high / 1080p 7−8 9−10
ultra / 1080p 4−5 5−6
QHD / 1440p 0−1 0−1
low / 720p 16−18 20−22
medium / 1080p 8−9 10−12
The average gaming FPS of Iris Pro Graphics 580 in Assassin's Creed Odyssey is 22% more, than GeForce GT 740.

Full Specs

  GeForce GT 740 Iris Pro Graphics 580
Architecture Kepler Gen. 9 Skylake
Code name GK107 Skylake GT4e
Type Desktop Laptop
Release date 29 May 2014 1 September 2015
Pipelines 384 72
Core clock speed 993 MHz 350 MHz
Boost Clock 1050 MHz
Transistor count 1,270 million 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 31.78 72.00
Floating-point performance 762.6 gflops
Length 145 mm
Memory bus width 128 Bit
Memory clock speed 5012 MHz
Memory bandwidth 80.19 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) 25 Mh/s
Quick Sync +
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