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Intel Iris Plus Graphics 655

Intel Iris Plus Graphics 655

The Intel Iris Plus Graphics 655 (GT3e) is a processor graphics card announced in September 2017. As the successor to the Intel Iris Graphics 650 (Kaby Lake), the Iris Plus Graphics 655 is used for 28-Watt Coffee Lake-U models. The biggest difference is the doubled eDRAM-cache at 128 MB. There should not be any big changes compared to the Iris Graphics 650.

The so called GT3e version of the Kaby Lake GPU still has 48 Execution Units (EUs), which can reach up to 1200 MHz (previously 1100 MHz) depending on the model. Besides eDRAM cache, the Iris 655 can also access the system memory (2x 64 Bit DDR3L-2133/DDR4-2400) via processor interface.

Compared to the Iris Plus 640 from the 15-Watt models, the Iris 655 only has a slightly higher maximum clock as well as almost twice the TDP, which allows a better utilization of the Turbo Boost potential.

Performance

The exact performance of the Iris Plus Graphics 655 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 i7-8559U. 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.

Features

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 655 is used for 28-Watt processor and therefore small/medium-sized notebooks.

ManufacturerIntel
Gen. 9.5 Series
Iris Plus Graphics 655 48 @ 300 - 1200 (Boost) MHz
Iris Plus Graphics 650 (compare) 48 @ 300 - 1100 (Boost) MHz64/128 Bit
Iris Plus Graphics 640 (compare) 48 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 630 (compare) 24 @ 300 - 1150 (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 615 (compare) 24 @ 300 - 1000 (Boost) MHz64/128 Bit
HD Graphics 615 (compare) 24 @ 300 - 1050 (Boost) MHz64/128 Bit
CodenameKaby Lake GT3e
ArchitectureIntel Gen. 9.5 (Kaby Lake)
Pipelines48 - unified
Core Speed300 - 1200 (Boost) MHz
Memory TypeDDR3/DDR4
Shared Memoryyes
DirectXDirectX 12 (FL 12_1)
technology14 nm
FeaturesQuickSync
Date of Announcement01.09.2017
CPUGPU Base SpeedGPU Boost / Turbo
Intel Core i5-8259U4 x 2300 MHz, 28 W300 MHz1050 MHz
Intel Core i5-8269U4 x 2600 MHz, 28 W300 MHz1100 MHz
Intel Core i7-8559U4 x 2700 MHz, 28 W300 MHz1200 MHz
Intel Core i3-8109U2 x 3000 MHz, 28 W300 MHz1050 MHz
min. - max.300 - 300 MHz1050 - 1200 MHz

Benchmarks

Cinebench R15
OpenGL 64Bit +
Ref. Match 64Bit +
GFXBench (DX / GLBenchmark) 2.7
T-Rex HD Offscreen C24Z16 1920x1080 +
T-Rex HD Onscreen C24Z16 +
- 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 detailled information on the benchmark results, click on the fps number.

low 1280x720
20.5  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
F1 2018

F1 2018

2018
low 1280x720
45  fps    + Compare
med. 1920x1080
23  fps    + Compare
high 1920x1080
17  fps    + Compare
ultra 1920x1080
12 12 ~ 12 fps    + Compare
» With all tested laptops playable in detail settings low.
Fortnite

Fortnite

2018
low 1280x720
51.5  fps    + Compare
med. 1920x1080
21.6  fps    + Compare
» With all tested laptops playable in detail settings low.
low 1280x720
30  fps    + Compare
med. 1920x1080
18  fps    + Compare
high 1920x1080
14  fps    + Compare
ultra 1920x1080
9  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1280x720
128  fps    + Compare
med. 1366x768
125  fps    + Compare
high 1920x1080
113  fps    + Compare
ultra 1920x1080
57.8  fps    + Compare
3820x2160
34.4  fps    + Compare
» With all tested laptops playable in detail settings ultra.
low 1280x720
97  fps    + Compare
med. 1920x1080
40.6  fps    + Compare
high 1920x1080
32.7  fps    + Compare
» With all tested laptops playable in detail settings med..
Overwatch

Overwatch

2016
low 1280x720
91  fps    + Compare
med. 1366x768
68  fps    + Compare
high 1920x1080
29.9  fps    + Compare
ultra 1920x1080
18.2  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
25.9  fps    + Compare
med. 1366x768
17.6  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1280x720
87.9 fps  fps    + Compare
med. 1366x768
64 fps  fps    + Compare
high 1920x1080
32.4 fps  fps    + Compare
ultra 1920x1080
28.1 fps  fps    + Compare