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Intel Iris Plus Graphics 640

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.

ManufacturerIntel
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 (compare) 48 @ 300 - 1150 (Boost) MHz
Iris Plus Graphics 640 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
ArchitectureIntel Gen. 9.5 (Kaby Lake)
Pipelines48 - unified
Core Speed300 - 1050 (Boost) MHz
Memory Bus Width64/128 Bit
Memory TypeDDR3/DDR4
Max. Amount of Memory64 MB
Shared Memoryyes
DirectXDirectX 12 (FL 12_1)
technology14 nm
FeaturesQuickSync
Date of Announcement03.01.2017
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

Benchmarks

3DMark - Time Spy Score 2560x1440
min: 467     avg: 499.8     median: 494 (4%)     max: 543 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark - Time Spy Graphics 2560x1440
min: 413     avg: 442.5     median: 437 (3%)     max: 483 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark - Ice Storm Unlimited Graphics Score 1280x720 offscreen
min: 142163     avg: 147298     median: 145481 (27%)     max: 154251 Points
+ 3 benchmarks and specifications   + Show comparison chart
3DMark - Cloud Gate Standard Score 1280x720
min: 7558     avg: 7853     median: 7876 (13%)     max: 8102 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark - Cloud Gate Standard Graphics 1280x720
min: 10486     avg: 11119.2     median: 11248 (6%)     max: 11495 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark - Fire Strike Score 1920x1080
min: 1236     avg: 1309     median: 1287 (5%)     max: 1425 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark - Fire Strike Graphics 1920x1080
min: 1315     avg: 1410.8     median: 1393 (3%)     max: 1541 Points
+ 4 benchmarks and specifications   + Show comparison chart
3DMark 11 - Performance 1280x720
min: 2136     avg: 2440     median: 2561 (7%)     max: 2664 points
+ 5 benchmarks and specifications   + Show comparison chart
3DMark 11 - Performance GPU 1280x720
min: 1980     avg: 2275.4     median: 2379 (5%)     max: 2493 points
+ 5 benchmarks and specifications   - Hide comparison chart
3DMark 06 Standard 1280x1024 +
Unigine Valley 1.0 - Extreme HD DirectX 1920x1080
6.5 fps (4%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R10 Shading 32Bit +
Cinebench R11.5 OpenGL 64Bit +
Cinebench R15
OpenGL 64Bit +
Ref. Match 64Bit +
GFXBench (DX / GLBenchmark) 2.7
T-Rex HD Offscreen C24Z16 1920x1080 +
T-Rex HD Onscreen C24Z16 +
GFXBench 3.0 - Manhattan Offscreen OGL off screen
31.2 fps (6%)
+ 1 benchmarks and specifications   + Show comparison chart
GFXBench 3.0 - Manhattan Onscreen OGL on screen
77 fps (21%)
+ 1 benchmarks and specifications   + Show comparison chart
GFXBench - Car Chase Offscreen off screen
40.7 fps (10%)
+ 1 benchmarks and specifications   + Show comparison chart
GFXBench - Car Chase Onscreen on screen
15.6 fps (6%)
+ 1 benchmarks and specifications   + Show comparison chart
LuxMark v2.0 64Bit - Room GPUs-only
min: 315     avg: 325     median: 325 (6%)     max: 335 Samples/s
+ 2 benchmarks and specifications   + Show comparison chart
LuxMark v2.0 64Bit - Sala GPUs-only
min: 748     avg: 778.5     median: 778 (7%)     max: 809 Samples/s
+ 2 benchmarks and specifications   + Show comparison chart
ComputeMark v2.1 - Normal, Score 1024x600
min: 1575     avg: 1677     median: 1677 (6%)     max: 1779 Points
+ 2 benchmarks and specifications   + Show comparison chart
Power Consumption - FurMark 1.19 GPU Stress Test - Power Consumption (external Monitor) 1280x720 *
min: 30     avg: 33.6     median: 31 (7%)     max: 38 Watt
+ 3 benchmarks and specifications   + Show comparison chart
Power Consumption - The Witcher 3 Power Consumption (external Monitor) ultra 1920x1080 *
min: 28     avg: 33.5     median: 33 (7%)     max: 38 Watt
+ 2 benchmarks and specifications   + Show comparison chart
Power Consumption - Witcher 3 ultra - Power Consumption *
min: 31     avg: 34.9     median: 34 (7%)     max: 38 Watt
+ 2 benchmarks and specifications   + Show comparison chart
Clock Speed - GPU Clock Witcher 3 ultra
min: 748     avg: 823     median: 823 (43%)     max: 898 MHz
+ 2 benchmarks and specifications   + Show comparison chart
Clock Speed - GPU Clock Speed Furmark 1.19 GPU Stress Test 1280x720
min: 570     avg: 634     median: 634 (36%)     max: 698 MHz
+ 2 benchmarks and specifications   + Show comparison chart
- 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.

The Evil Within 2

The Evil Within 2

2017
low 1280x720
13.8  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Middle-earth: Shadow of War

Middle-earth: Shadow of War

2017
low 1280x720
28  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
FIFA 18

FIFA 18

2017
low 1280x720
69.5 (!)  fps    + Compare
med. 1920x1080
38.8 (!)  fps    + Compare
» With all tested laptops playable in detail settings med..
F1 2017

F1 2017

2017
low 1280x720
33 38 ~ 36 fps    + Compare
med. 1920x1080
15 15 ~ 15 fps    + Compare
» With most tested laptops playable in detail settings low.
Playerunknown's Battlegrounds (PUBG)

Playerunknown's Battlegrounds (PUBG)

2017
low 1280x720
22.9  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Team Fortress 2

Team Fortress 2

2017
med. 1366x768
99  fps    + Compare
high 1920x1080
48 fps  fps    + Compare
ultra 1920x1080
31.8  fps    + Compare
» With all tested laptops playable in detail settings high.
Dirt 4

Dirt 4

2017
med. 1920x1080
27.5 (!)  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Rocket League

Rocket League

2017
low 1280x720
69.3 96 101 103 ~ 92 fps    + Compare
med. 1920x1080
33.9 35.8 42.6 48.2 ~ 40 fps    + Compare
high 1920x1080
24.9 25.3 29.3 33.6 ~ 28 fps    + Compare
» With most tested laptops playable in detail settings med..
Prey

Prey

2017
low 1280x720
39.9 45.4 ~ 43 fps    + Compare
med. 1920x1080
17.9 18.1 ~ 18 fps    + Compare
high 1920x1080
14.8  fps    + Compare