Intel Iris Plus Graphics 645

Intel Iris Plus Graphics 645

The Intel Iris Plus Graphics 645 (GT3e) is a processor graphics card that was first seen in the Apple MacBook Pro 13 (Entry, 2019) in mid 2019. It is similar to the Iris Plus Graphics 655 in the 28 Watt CPUs.

The so called GT3e version of the Coffee-Lake GPU still has 48 Execution Units (EUs), which can reach up to 1150 MHz depending on the model. Besides eDRAM cache, the Iris 645 can also access the system memory (2x 64 Bit DDR3L-2133/DDR4-2400) via processor interface.


The exact performance of the Iris Plus Graphics 645 depends on the CPU model, because maximum clock as well as the size of the L3 cache can differ a bit. The system memory (DDR3/DDR4) will influence the performance as well.

The fastest chips are high-clocked Core i7 models like the Core i7-8557U. Depending on the game, the Iris Plus 655 will probably be on par with a dedicated GeForce 930M or GeForce 940MX and can handle smooth gameplay in modern titles in low up to medium settings.


The reworked video engine now fully supports hardware decoding of H.265/HEVC videos. Contrary to Skylake, however, Kaby Lake can now also decode H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The video output is possible via DP 1.2/eDP 1.3 (up to 3840 x 2160 @60 Hz), whereas HDMI is also supported in the older 1.4a standard. An HDMI 2.0 output can be added via converter from DisplayPort. The GPU can drive up to three displays simultaneously.

Power Consumption

The Iris Plus Graphics 645 is used for 15-Watt processor and therefore small-sized notebooks.

Gen. 9.5 Series
Iris Plus Graphics 655 (compare) 48 @ 300 - 1200 (Boost) MHz
Iris Plus Graphics 650 (compare) 48 @ 300 - 1100 (Boost) MHz64/128 Bit
Iris Plus Graphics 645 48 @ 300 - 1150 (Boost) MHz
Iris Plus Graphics 640 (compare) 48 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 630 (compare) 24 @ 300 - 1150 (Boost) MHz64/128 Bit
UHD Graphics P630 (compare) 24 @ 300 - 1200 (Boost) MHz64/128 Bit
HD Graphics 630 (compare) 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics P630 (compare) 24 64/128 Bit
UHD Graphics 620 (compare) 24 @ 300? - 1150 (Boost) MHz64/128 Bit
HD Graphics 620 (compare) 24 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 617 (compare) 24 64/128 Bit
UHD Graphics 615 (compare) 24 @ 300 - 1000 (Boost) MHz64/128 Bit
HD Graphics 615 (compare) 24 @ 300 - 1050 (Boost) MHz64/128 Bit
CodenameKaby Lake GT3e
ArchitectureGen. 9.5 Coffee Lake
Pipelines48 - unified
Core Speed300 - 1150 (Boost) MHz
Memory TypeDDR3/DDR4
Shared Memoryyes
DirectXDirectX 12_1
technology14 nm
Date of Announcement10.07.2019
CPUGPU Base SpeedGPU Boost / Turbo
Intel Core i7-8557U4 x 1700 MHz, 28 W300 MHz1150 MHz
Intel Core i5-8257U4 x 1400 MHz, 15 W300 MHz1050 MHz
min. - max.300 - 300 MHz1050 - 1150 MHz


Cinebench R15
OpenGL 64Bit +
Ref. Match 64Bit +
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

low 1280x720
37.4  fps    + Compare
med. 1920x1080
26.1  fps    + Compare
high 1920x1080
22.5  fps    + Compare
» With all tested laptops playable in detail settings low.
low 1280x720
76.5 fps  fps    + Compare
med. 1366x768
57.3 fps  fps    + Compare
high 1920x1080
29 fps  fps    + Compare
ultra 1920x1080
26.9 fps  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1280x720
104.6  fps    + Compare
med. 1366x768
60  fps    + Compare
high 1366x768
51.6  fps    + Compare
ultra 1920x1080
22.1  fps    + Compare
» With all tested laptops playable in detail settings high.

For more games that might be playable and a list of all games and graphics cards visit our Gaming List

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

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show all (including archived), 2020, 2019

Notebook reviews with Intel Iris Plus Graphics 645 graphics card

Apple MacBook Pro 13 2019 2TB3: Intel Core i5-8257U, 13.3", 1.4 kg
  Review » Apple MacBook Pro 13 2019: Entry-Level Pro with Touch Bar in review

   » The less expensive MacBook Pro 13 is the better choice

» Comparison of GPUs
Detailed list of all laptop GPUs sorted by class and performance.

» Benchmark List
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» Notebook Gaming List
Playable games for each graphics card and their average FPS results.

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* Approximate position of the graphics adapter

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Comparison of Laptop Graphics Cards > Intel Iris Plus Graphics 645 Graphics Card
Klaus Hinum (Update: 2019-07-16)