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Intel UHD Graphics 620 vs Intel Iris Plus Graphics G4 (Ice Lake 48 EU) vs Intel Iris Plus Graphics 645

Intel UHD Graphics 620

► remove from comparison Intel UHD Graphics 620

The Intel UHD Graphics 620 (GT2) is an integrated graphics unit, which can be found in various ULV (Ultra Low Voltage) processors of the Kaby Lake Refresh generation (8th generation Core). Compared to the similar named Intel HD Graphics 620 in the 2016 Kaby Lake CPUs, only the name changed from HD to UHD. It is clocked with up to 1.150 MHz and therefore 100 MHz higher than the old HD Graphics 620 (max. 1.050 MHz) and offer a comparable performance. Due to its lack of dedicated graphics memory or eDRAM cache, the HD 620 has to access the main memory (2x 64bit DDR3/DDR4).

Performance

The exact performance of the UHD Graphics 620 depends on various factors like L3 cache size, memory configuration (DDR3/DDR4) and maximum clock rate of the specific model and as is similar to the Intel HD Graphics 620 and Intel HD Graphics 630. Compared to the average HD Graphics 620, the UHD graphics profits from the quad-core CPU a bit in our gaming benchmarks. Therefore, should be positioned between a GeForce 910M and 920M dedicated graphics card from Nvidia. For games, the drivers however are not that fast updated and tested as with GeForce graphics cards. In our tests, the UHD 620 is most suited for casual games like Team Fortress 2, Rocket League or Farming Simulator 17. See below for a list of modern games tested with various models.

Features

The revised video engine now supports H.265/HEVC Main10 profile in hardware with 10 bit colors. Furthermore, Googles VP9 codec can also be hardware decoded. The first models do not support HDCP 2.2 and therefore Netflix 4K. This was added with the new models in 2017 and beginning of May 2017 also the older CPU models like the i3-7100U are now shipped with a new S-Spec Code that supports HDCP 2.2. HDMI 2.0 however is still only supported with an external converter chip (LSPCon).

Power Consumption

The UHD Graphics 620 can be found in mobile processors specified at 15 W TDP and is therefore suited for compact laptops and ultrabooks. The power consumption during playing The Witcher 3 (with an external monitor) was comparable to a Intel HD Graphics 620 based laptop and on the lowest end of all of our measurements. Dedicated GPUs, like the GeForce 940MX, needed a lot more power.

Intel Iris Plus Graphics G4 (Ice Lake 48 EU)

► remove from comparison Intel Iris Plus Graphics G4 (Ice Lake 48 EU)

The Intel Iris Plus Graphics G4(Ice Lake with 48 EUs) is an integrated graphics card in the Ice Lake SoCs (10th generation core 10xxG4) for laptops. It offers no dedicated graphics memory (no eDRAM cache like the Intel Iris Graphics 655 predecessor of the Coffee Lake SoCs). It offers 48 of the 64 EUs (Execution Units / Shader Blocks) of the Ice Lake chip and the clock rate depends on the processor model. At launch it looks like all models have a 300 MHz base clock and only differ in the boost clock (1050 - 1100 MHz). Another difference is the TDP as it can be configured from 12 - 25 Watt in the 15 Watt U-models and maybe even higher in the 25 Watt models that will come later.

The performance was not yet communicated, but due to the 25% less cores and similar clock speeds the performance should be clearly lower than the full Iris Plus G7 models. Although, the Ice Lake G4 graphics does not feature any dedicated graphics memory it should perform better than the old Iris Plus 655 with 128 MB eDRAM. Compared to AMDs offering, we suspect the performance should be similar to an AMD Radeon RX Vega 8 GPU. Therefore, the gaming performance should be only sufficient for low demanding games like Rocket League or Overwatch.

A special new feature of the Gen11 graphics card is the new Variable Rate Shading (VRS) support. With it game designers can decide where to spend shading time and e.g. shade object in the background or behind fog with less resolution (up to using only one source for a 4x4 block). With this technique early results show up to 1.3x performance in Unreal Engine POC and 1.2x speedup in Civ 6. Up to now VRS is only supported by the new Nvidia Turing architecture (GTX 1650 and up).

Another improved hardware piece is the integrated video de- and encoder that was improved significantly according to Intel. They did not specify any more details, but the previous generation was able to decode VP9 and H.265/HEVC in Main10 profile with 10 bit color depth using the dedicated hardware.

The Iris Plus G4 supports three display pipes that can each output 5K60 signals (via DisplayPort 1.4 HBR3 or HDMI 2.0b). Combining two pipes, the chip is capable to output 8k content.

The Ice Lake SoCs and therefore the integrated GPU are manufactured in the modern 10nm+ process at Intel that should be comparable to the 7nm process of TSMC.

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 620Intel Iris Plus Graphics G4 (Ice Lake 48 EU)Intel Iris Plus Graphics 645
ManufacturerIntelIntelIntel
Gen. 9.5 Series
Iris Plus Graphics 655 48 @ 0.3 - 1.2 GHz
Iris Plus Graphics 650 48 @ 0.3 - 1.1 GHz64/128 Bit
Iris Plus Graphics 645 48 @ 0.3 - 1.15 GHz
Iris Plus Graphics 640 48 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 630 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics P630 24 @ 0.3 - 1.2 GHz64/128 Bit
HD Graphics 630 24 @ 0.3 - 1.15 GHz64/128 Bit
HD Graphics P630 24 64/128 Bit
UHD Graphics 620 24 @ 0.3 - 1.15 GHz64/128 Bit
HD Graphics 620 24 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 617 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics 615 24 @ 0.3 - 1 GHz64/128 Bit
HD Graphics 615 24 @ 0.3 - 1.05 GHz64/128 Bit
Iris Plus Graphics G7 (Ice Lake 64 EU) 64 @ 0.3 - 1.1 GHz
Iris Plus Graphics G4 (Ice Lake 48 EU) 48 @ 0.3 - 1.1 GHz
UHD Graphics G1 (Ice Lake 32 EU) 32 @ 0.3 - 1.1 GHz
UHD Graphics G7 (Lakefield GT2 64 EU) 64 @ 0.2 - 0.5 GHz
UHD Graphics G4 (Lakefield GT1 48 EU) 48 @ 0.2 - 0.5 GHz
UHD Graphics (Jasper Lake 32 EU) 32 @ 0.35 - 0.9 GHz
UHD Graphics (Jasper Lake 24 EU) 24 @ 0.35 - 0.8 GHz
UHD Graphics (Jasper Lake 16 EU) 24 @ 0.35 - 0.8 GHz
Iris Plus Graphics 655 48 @ 0.3 - 1.2 GHz
Iris Plus Graphics 650 48 @ 0.3 - 1.1 GHz64/128 Bit
Iris Plus Graphics 645 48 @ 0.3 - 1.15 GHz
Iris Plus Graphics 640 48 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 630 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics P630 24 @ 0.3 - 1.2 GHz64/128 Bit
HD Graphics 630 24 @ 0.3 - 1.15 GHz64/128 Bit
HD Graphics P630 24 64/128 Bit
UHD Graphics 620 24 @ 0.3 - 1.15 GHz64/128 Bit
HD Graphics 620 24 @ 0.3 - 1.05 GHz64/128 Bit
UHD Graphics 617 24 @ 0.3 - 1.15 GHz64/128 Bit
UHD Graphics 615 24 @ 0.3 - 1 GHz64/128 Bit
HD Graphics 615 24 @ 0.3 - 1.05 GHz64/128 Bit
CodenameKaby-Lake-Refresh GT2Ice Lake G4 Gen. 11Kaby Lake GT3e
ArchitectureGen. 9.5Gen. 11 Ice LakeGen. 9.5 Coffee Lake
Pipelines24 - unified48 - unified48 - unified
Core Speed300? - 1150 (Boost) MHz300 - 1100 (Boost) MHz300 - 1150 (Boost) MHz
Memory Bus Width64/128 Bit
Memory TypeDDR3/DDR4DDR4DDR3/DDR4
Shared Memoryyesyesyes
DirectXDirectX 12_1DirectX 12_1DirectX 12_1
technology14 nm10 nm14 nm
FeaturesQuickSyncQuickSyncQuickSync
Date of Announcement01.09.2017 28.05.2019 10.07.2019
CPU in UHD Graphics 620GPU Base SpeedGPU Boost / Turbo
Intel Core i7-10810U6 x 1100 MHz, 15 W300 MHz? MHz
Intel Core i7-10710U6 x 1100 MHz, 15 W300 MHz1150 MHz
Intel Core i7-10610U4 x 1800 MHz, 15 W300 MHz1150 MHz
min. - max.300 MHz900 - 1150 MHz
CPU in Iris Plus Graphics G4 (Ice Lake 48 EU)GPU Base SpeedGPU Boost / Turbo
Intel Core i5-1035G44 x 1100 MHz, 15 W300 MHz1050 MHz
Intel Core i5-1030G44 x 700 MHz, 9 W300 MHz1050 MHz
Intel Core i3-1000NG42 x 1100 MHz, 9 W300 MHz900 MHz
Intel Core i3-1000G42 x 1100 MHz, 9 W300 MHz900 MHz
min. - max.300 MHz900 - 1150 MHz
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 MHz900 - 1150 MHz

Benchmarks

Performance Rating - 3DMark 11 + Fire Strike + Time Spy - UHD Graphics 620
6.5 pt (7%)
Performance Rating - 3DMark 11 + Fire Strike + Time Spy - Iris Plus Graphics G4 (Ice Lake 48 EU)
8.4 pt (9%)
3DMark - 3DMark Time Spy Score
min: 343     avg: 439     median: 435.5 (2%)     max: 708 Points
min: 699     avg: 724     median: 732 (4%)     max: 741 Points
3DMark - 3DMark Time Spy Graphics
min: 299     avg: 384     median: 379.5 (2%)     max: 760 Points
min: 619     avg: 639     median: 646 (3%)     max: 652 Points
3DMark - 3DMark Ice Storm Unlimited Graphics
min: 60554     avg: 88527     median: 88725 (14%)     max: 115515 Points
min: 50243     avg: 82914     median: 82913.5 (13%)     max: 115584 Points
3DMark - 3DMark Ice Storm Extreme Graphics
min: 26409     avg: 43034     median: 42660 (6%)     max: 59483 Points
48559 Points (7%)
3DMark - 3DMark Cloud Gate Score
min: 5358     avg: 8157     median: 8139 (11%)     max: 10960 Points
min: 10992     avg: 11496     median: 11495.5 (15%)     max: 11999 Points
3DMark - 3DMark Cloud Gate Graphics
min: 6205     avg: 9224     median: 9312 (5%)     max: 11437 Points
min: 14903     avg: 14910     median: 14910 (7%)     max: 14917 Points
3DMark - 3DMark Fire Strike Standard Score
min: 538     avg: 1056     median: 1071 (3%)     max: 1313 Points
3DMark - 3DMark Fire Strike Standard Graphics
min: 557     avg: 1153     median: 1164 (2%)     max: 1444 Points
3DMark - 3DMark Ice Storm Graphics
min: 13790     avg: 68085     median: 67512 (9%)     max: 102010 Points
74346 Points (10%)
3DMark - 3DMark Sling Shot (ES 3.0) Unlimited
7727 Points (46%)
3DMark - 3DMark Sling Shot (ES 3.0) Unlimited Graphics
8007 Points (19%)
3DMark - 3DMark Sling Shot Extreme (ES 3.1) Unlimited
min: 5204     avg: 5377     median: 5376.5 (55%)     max: 5549 Points
3DMark - 3DMark Sling Shot Extreme (ES 3.1) Unlimited Graphics
min: 4856     avg: 5023     median: 5023 (20%)     max: 5190 Points
3DMark - 3DMark Night Raid
min: 3967     avg: 5202     median: 5245 (8%)     max: 6637 Points
8216 Points (12%)
3DMark - 3DMark Night Raid Graphics Score
min: 4163     avg: 5221     median: 5312 (3%)     max: 6380 Points
9179 Points (6%)
3DMark 11 - 3DM11 Performance Score
min: 1175     avg: 1925     median: 1935 (5%)     max: 2283 Points
3DMark 11 - 3DM11 Performance GPU
min: 1144     avg: 1741     median: 1744 (3%)     max: 2006 Points
3DMark Vantage
3DM Vant. Perf. total + Intel UHD Graphics 620
3DMark Vantage - 3DM Vant. Perf. total
7761 Points (8%)
3DM Vant. Perf. total + Intel Iris Plus Graphics G4 (Ice Lake 48 EU)
min: 5516     avg: 8812     median: 8812 (9%)     max: 12108 Points
3DM Vant. Perf. GPU no PhysX + Intel UHD Graphics 620
3DMark Vantage - 3DM Vant. Perf. GPU no PhysX
6341 Points (6%)
3DM Vant. Perf. GPU no PhysX + Intel Iris Plus Graphics G4 (Ice Lake 48 EU)
min: 4925     avg: 7610     median: 7610 (7%)     max: 10295 Points
3DMark 2001SE - 3DMark 2001 - Standard
34467 Points (36%)
3DMark 05 - 3DMark 05 - Standard
19383 Points (28%)