Intel Iris Plus Graphics 640 vs Intel UHD Graphics 620 vs Intel HD Graphics 620

Intel Iris Plus Graphics 640

► remove Intel Iris Plus Graphics 640

The Intel Iris Plus Graphics 640 (GT3e) is a processor graphics card for Kaby Lake models announced in January 2017. As the successor to the Intel Iris Graphics 540 (Skylake), the Iris Plus Graphics 640 is used for 15-Watt ULV models and is equipped with 64 MB eDRAM cache. There should not be any big changes compared to the Iris Graphics 540.

The so called GT3e version of the Kaby Lake GPU still has 48 Execution Units (EUs), which can reach up to 1050 MHz depending on the model. Besides eDRAM cache, the Iris 640 can also access the system memory (2x 64 Bit DDR3L-1600/LPDDR3-1866/DDR4-2400) via processor interface.

Compared to the Iris Plus 650 from the 28-Watt models, the Iris 640 only has a slightly lower maximum clock as well as the lower TDP, so the utilization of the Turbo Boost potential should be worse.

Performance

The exact performance of the Iris Plus Graphics 640 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 i7-7660U. Depending on the game, the Iris Plus 640 will probably be similar to the previous model somewhere between a dedicated GeForce 920M and GeForce 940M and is usually limited to low settings in modern games.

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 640 is used for 15-Watt ULV processor and therefore thin notebooks and Ultrabooks.

Intel UHD Graphics 620

► remove 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 HD Graphics 620

► remove Intel HD Graphics 620

The Intel HD Graphics 620 (GT2) is an integrated graphics unit, which can be found in various ULV (Ultra Low Voltage) processors of the Kaby Lake generation. This "GT2" version of the Kaby Lake GPU is clocked at up to 1050 MHz (depending on the CPU model). 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 HD Graphics 620 depends on various factors like L3 cache size, memory configuration (DDR3/DDR4) and maximum clock rate of the specific model but is very similar to the old HD Graphics 520 GPU. That means only some less demanding recent games like Farming Simulator 17 run fluently in low detail settings (see below for gaming benchmarks). Compared to dedicated graphics cards, the HD620 should be positioned between a GeForce 910M and 920M from Nvidia. For games, the drivers however are not that fast updated and tested as with GeForce graphics cards.

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 HD Graphics 620 can be found in mobile processors specified at 15 W TDP and is therefore suited for compact laptops and ultrabooks.

Intel Iris Plus Graphics 640Intel UHD Graphics 620Intel HD Graphics 620
ManufacturerIntelIntelIntel
Gen. 9.5 Series
Iris Plus Graphics 655 48 @ 300 - 1200 (Boost) MHz
Iris Plus Graphics 650 48 @ 300 - 1100 (Boost) MHz64/128 Bit
Iris Plus Graphics 640 48 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics P630 24 64/128 Bit
UHD Graphics 620 24 @ 300? - 1150 (Boost) MHz64/128 Bit
HD Graphics 620 24 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 617 24 64/128 Bit
UHD Graphics 615 24 @ 300 - 1000 (Boost) MHz64/128 Bit
HD Graphics 615 24 @ 300 - 1050 (Boost) MHz64/128 Bit
Iris Plus Graphics 655 48 @ 300 - 1200 (Boost) MHz
Iris Plus Graphics 650 48 @ 300 - 1100 (Boost) MHz64/128 Bit
Iris Plus Graphics 640 48 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics P630 24 64/128 Bit
UHD Graphics 620 24 @ 300? - 1150 (Boost) MHz64/128 Bit
HD Graphics 620 24 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 617 24 64/128 Bit
UHD Graphics 615 24 @ 300 - 1000 (Boost) MHz64/128 Bit
HD Graphics 615 24 @ 300 - 1050 (Boost) MHz64/128 Bit
Iris Plus Graphics 655 48 @ 300 - 1200 (Boost) MHz
Iris Plus Graphics 650 48 @ 300 - 1100 (Boost) MHz64/128 Bit
Iris Plus Graphics 640 48 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics 630 24 @ 300 - 1150 (Boost) MHz64/128 Bit
HD Graphics P630 24 64/128 Bit
UHD Graphics 620 24 @ 300? - 1150 (Boost) MHz64/128 Bit
HD Graphics 620 24 @ 300 - 1050 (Boost) MHz64/128 Bit
UHD Graphics 617 24 64/128 Bit
UHD Graphics 615 24 @ 300 - 1000 (Boost) MHz64/128 Bit
HD Graphics 615 24 @ 300 - 1050 (Boost) MHz64/128 Bit
CodenameKaby Lake GT3eKaby-Lake-Refresh GT2Kaby-Lake GT2
ArchitectureIntel Gen. 9.5 (Kaby Lake)Intel Gen. 9.5 (Kaby Lake Refresh)Intel Gen. 9.5 (Kaby Lake)
48 - 24 - 24 -
Core300 - 1050 (Boost) MHz300? - 1150 (Boost) MHz300 - 1050 (Boost) MHz
Bus64/128 Bit64/128 Bit64/128 Bit
MemoryDDR3/DDR4DDR3/DDR4DDR3/DDR4
Max. Memory64 MB
yesyesyes
DirectXDirectX 12 (FL 12_1)DirectX 12 (FL 12_1)DirectX 12 (FL 12_1)
Technology14 nm14 nm14 nm
FeaturesQuickSyncQuickSyncQuickSync
Introduced03.01.2017 01.09.2017 30.08.2016
CPUGPU Base SpeedGPU Boost / Turbo
Intel Core i7-7660U2 x 2500 MHz, 15 W300 MHz1050 MHz
Intel Core i7-7560U2 x 2400 MHz, 15 W300 MHz1050 MHz
Intel Core i5-7360U2 x 2300 MHz, 15 W300 MHz1000 MHz
Intel Core i5-7260U2 x 2200 MHz, 15 W300 MHz950 MHz
min. - max.300 - 300 MHz950 - 1050 MHz

3DMark - Time Spy Score 2560x1440
min: 467     avg: 499.8     median: 494.5 (4%)     max: 543 Points
min: 343     avg: 398.4     median: 393 (3%)     max: 461 Points
min: 329     avg: 364.2     median: 365 (3%)     max: 398 Points
3DMark - Time Spy Graphics 2560x1440
min: 413     avg: 442.5     median: 437 (3%)     max: 483 Points
min: 299     avg: 347     median: 342 (2%)     max: 402 Points
min: 290     avg: 320     median: 321 (2%)     max: 349 Points
3DMark - Ice Storm Unlimited Graphics Score 1280x720 offscreen
min: 142163     avg: 147298     median: 145481 (27%)     max: 154251 Points
min: 65949     avg: 87388.6     median: 88221.5 (17%)     max: 104630 Points
min: 57706     avg: 77795.3     median: 79066.5 (15%)     max: 98195 Points
3DMark - Ice Storm Extreme Graphics 1920x1080
min: 29002     avg: 44535.2     median: 43057 (6%)     max: 59483 Points
min: 12780     avg: 41307.8     median: 38918 (5%)     max: 55020 Points
3DMark - Cloud Gate Standard Score 1280x720
min: 7558     avg: 7853     median: 7876 (13%)     max: 8102 Points
min: 5821     avg: 7992.6     median: 7949 (13%)     max: 9949 Points
min: 3369     avg: 6049     median: 5993 (10%)     max: 7245 Points
3DMark - Cloud Gate Standard Graphics 1280x720
min: 10486     avg: 11119.2     median: 11248 (6%)     max: 11495 Points
min: 6910     avg: 9024.4     median: 9130 (5%)     max: 11294 Points
min: 5790     avg: 7755.1     median: 7725 (4%)     max: 9610 Points
3DMark - Fire Strike Score 1920x1080
min: 1236     avg: 1309     median: 1287.5 (5%)     max: 1425 Points
min: 538     avg: 1014.1     median: 1018 (4%)     max: 1225 Points
min: 316     avg: 844.7     median: 858 (3%)     max: 1078 Points
3DMark - Fire Strike Graphics 1920x1080
min: 1315     avg: 1410.8     median: 1393.5 (3%)     max: 1541 Points
min: 557     avg: 1103.7     median: 1117 (3%)     max: 1399 Points
min: 328     avg: 916.4     median: 934 (2%)     max: 1176 Points
3DMark - Ice Storm Standard Graphics 1280x720
min: 43091     avg: 72165.4     median: 70489 (9%)     max: 102010 Points
min: 11084     avg: 66524.7     median: 62248.5 (8%)     max: 92261 Points
3DMark 11 - Performance 1280x720
min: 2136     avg: 2440     median: 2561 (8%)     max: 2664 points
min: 1175     avg: 1871.2     median: 1861 (6%)     max: 2202 points
min: 1146     avg: 1638.5     median: 1645.5 (5%)     max: 1970 points
3DMark 11 - Performance GPU 1280x720
min: 1980     avg: 2275.4     median: 2379 (5%)     max: 2493 points
min: 1235     avg: 1696.3     median: 1691.5 (3%)     max: 1979 points
min: 1067     avg: 1498.6     median: 1508.5 (3%)     max: 1777 points
3DMark Vantage
P Result 1280x1024 + Intel UHD Graphics 620
P Result 1280x1024 + Intel HD Graphics 620
P GPU no PhysX 1280x1024 + Intel UHD Graphics 620
P GPU no PhysX 1280x1024 + Intel HD Graphics 620
3DMark 2001SE - Standard 1024x768
67477 Points (70%)
3DMark 03 - Standard 1024x768
min: 16812     avg: 19095.2     median: 17494 (9%)     max: 23293 Points
3DMark 05 - Standard 1024x768
min: 10111     avg: 12577.5     median: 12160 (26%)     max: 16394 Points
3DMark 06 Standard 1280x1024 + Intel Iris Plus Graphics 640
Standard 1280x1024 + Intel UHD Graphics 620
Standard 1280x1024 + Intel HD Graphics 620
Unigine Valley 1.0 - Extreme HD DirectX 1920x1080
6.5 fps (5%)