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Intel Iris Plus Graphics 645 vs Intel UHD Graphics (Elkhart Lake 32 EU)

Intel Iris Plus Graphics 645

► remove from comparison 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.

Performance

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.

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 645 is used for 15-Watt processor and therefore small-sized notebooks.

Intel UHD Graphics (Elkhart Lake 32 EU)

► remove from comparison Intel UHD Graphics (Elkhart Lake 32 EU)

The Intel UHD Graphics 32EUs Elkhart Lake (Gen. 11) is an integrated graphics card (iGPU) in the Elkhart Lake Pentium and Celeron SoCs (e.g., Pentium J6226). It was announced in early 2021 and is used in the high end Elkhart Lake CPUs. It uses all 32 execution units and offers no dedicated graphics memory. The clock speed depends on the CPU model and ranges from 4000 MHz (minimal base clock speed) up to 850 MHz (highest Boost clock).

The gaming performance is very low and only very low demanding 3D games should be playable. The slower 16 EU variant was even struggling in our Dota 2 benchmark.

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Intel Iris Plus Graphics 645Intel UHD Graphics (Elkhart Lake 32 EU)
Gen. 11 Series
Iris Plus Graphics 655 compare 48 @ 0.3 - 1.2 GHz
Iris Plus Graphics 650 compare 48 @ 0.3 - 1.1 GHz64/128 Bit
Iris Plus Graphics 645 48 @ 0.3 - 1.15 GHz
Iris Plus Graphics 640 compare 48 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 630 compare 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics P630 compare 24 @ 0.3 - 1.2 GHz64/128 Bit
HD Graphics 630 compare 24 @ 0.3 - 1.15 GHz64/128 Bit
HD Graphics P630 compare 24 64/128 Bit
UHD Graphics 620 compare 24 @ 0.3 - 1.15 GHz
HD Graphics 620 compare 24 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 617 compare 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics 615 compare 24 @ 0.3 - 1 GHz64/128 Bit
HD Graphics 615 compare 24 @ 0.3 - 1.05 GHz64/128 Bit
Iris Plus Graphics G7 (Ice Lake 64 EU) compare 64 @ 0.3 - 1.1 GHz
Iris Plus Graphics G4 (Ice Lake 48 EU) compare 48 @ 0.3 - 1.1 GHz
UHD Graphics G1 (Ice Lake 32 EU) compare 32 @ 0.3 - 1.1 GHz
UHD Graphics G7 (Lakefield GT2 64 EU) compare 64 @ 0.2 - 0.5 GHz
UHD Graphics G4 (Lakefield GT1 48 EU) compare 48 @ 0.2 - 0.5 GHz
UHD Graphics (Jasper Lake 32 EU) compare 32 @ 0.35 - 0.9 GHz
UHD Graphics (Elkhart Lake 32 EU) 32 @ 0.4 - 0.85 GHz
UHD Graphics (Jasper Lake 24 EU) compare 24 @ 0.35 - 0.8 GHz
UHD Graphics (Elkhart Lake 16 EU) compare 16 @ 0.25 - 0.85 GHz
UHD Graphics (Jasper Lake 16 EU) compare 24 @ 0.35 - 0.8 GHz
CodenameKaby Lake GT3eGen. 11
ArchitectureGen. 9.5 Coffee Lake
Pipelines48 - unified32 - unified
Core Speed300 - 1150 (Boost) MHz400 - 850 (Boost) MHz
Memory TypeDDR3, DDR4
Shared Memoryyesyes
APIDirectX 12_1, OpenGL 4.5DirectX 12_1, OpenGL 4.5, OpenCL 1.2
technology14 nm10 nm
FeaturesQuickSyncQuickSync
Date of Announcement10.07.2019 11.01.2021
Power Consumption4.8 - 10 Watt
Displays3 Displays (max.)
PredecessorUHD Graphics 600
CPU in Iris Plus Graphics 645GPU 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 MHz1050 - 1150 MHz

Benchmarks

3DMark - 3DMark Time Spy Score
624 Points (2%)
3DMark - 3DMark Time Spy Graphics
550 Points (1%)
3DMark - 3DMark Fire Strike Standard Score
1736 Points (3%)
3DMark - 3DMark Fire Strike Standard Graphics
1893 Points (2%)
3DMark 11 - 3DM11 Performance Score
3238 Points (4%)
3DMark 11 - 3DM11 Performance GPU
2985 Points (3%)
Cinebench R15
Cinebench R15 OpenGL 64 Bit + Intel Iris Plus Graphics 645
Cinebench R15 - Cinebench R15 OpenGL 64 Bit
min: 55.3     avg: 67.1     median: 67.1 (4%)     max: 78.9 fps
Cinebench R15 OpenGL Ref. Match 64 Bit + Intel Iris Plus Graphics 645
Cinebench R15 - Cinebench R15 OpenGL Ref. Match 64 Bit
min: 97.8     avg: 98.6     median: 98.6 (99%)     max: 99.3 %
GFXBench - GFXBench 5.0 Aztec Ruins High Tier Offscreen
20.2 fps (4%)
GFXBench - GFXBench 5.0 Aztec Ruins Normal Tier Offscreen
53.4 fps (4%)
GFXBench 3.1 - GFXBench Manhattan ES 3.1 Offscreen
69.6 fps (1%)
GFXBench 3.0 - GFXBench 3.0 Manhattan Offscreen
101.8 fps (6%)
GFXBench (DX / GLBenchmark) 2.7
GFXBench T-Rex HD Offscreen C24Z16 + Intel Iris Plus Graphics 645
GFXBench (DX / GLBenchmark) 2.7 - GFXBench T-Rex HD Offscreen C24Z16
198.3 fps (2%)

Average Benchmarks Intel Iris Plus Graphics 645 → 0% n=

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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.

X-Plane 11.11

X-Plane 11.11

2018
low 1280x720
100%
Iris Plus Graphics 645:
37.4  fps
med. 1920x1080
100%
Iris Plus Graphics 645:
26.1  fps
high 1920x1080
100%
Iris Plus Graphics 645:
22.5  fps
Dota 2 Reborn

Dota 2 Reborn

2015
low 1280x720
100%
Iris Plus Graphics 645:
76.5  fps
med. 1366x768
100%
Iris Plus Graphics 645:
57.3  fps
high 1920x1080
100%
Iris Plus Graphics 645:
29  fps
ultra 1920x1080
100%
Iris Plus Graphics 645:
26.9  fps
BioShock Infinite

BioShock Infinite

2013
low 1280x720
100%
Iris Plus Graphics 645:
104.6  fps
med. 1366x768
100%
Iris Plus Graphics 645:
60  fps
high 1366x768
100%
Iris Plus Graphics 645:
51.6  fps
ultra 1920x1080
100%
Iris Plus Graphics 645:
22.1  fps

Average Gaming Intel Iris Plus Graphics 645 → 100%

Average Gaming 30-70 fps → 100%

Intel Iris Plus Graphics 645lowmed.highultraQHD4K
X-Plane 11.1137.426.122.5
Dota 2 Reborn76.557.32926.9
BioShock Infinite104.66051.622.1
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps
1
2
1
1
1
2
1

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

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show all (including archived), 2024, 2023
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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Graphics Card Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)