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Intel Core i7-7660U

Intel i7-7660U

The Intel Core i7-7660U is a fast dual-core SoC for notebooks and Ultrabooks based on the Kaby Lake architecture and was announced in January 2017. The CPU has two processor cores clocked at 2.5-4 GHz (two cores up to 3.8 GHz). The processor can execute up to four threads simultaneously thanks to Hyper Threading. It is also equipped with an Intel Iris Plus Graphics 640 GPU with 64 MB eDRAm, a dual-channel memory controller (DDR4) as well as VP9 and H.265 video decoding as well as encoding. The chip is still manufactured in a 14nm process with FinFET transistors.

Compared to the Core i7-7600U, the 7660 does have a higher single-core Turbo of 4 GHz (+100 MHz), but a lower dual-core Turbo (-100 MHz) and a lower base frequency (-300 MHz). However, the CPU part can also use the 64 MB eDRAM as L5 cache.

Architecture

Intel basically uses the same micro architecture compared to Skylake, so the per-MHz performance does not differ. The manufacturer only reworked the Speed Shift technology for faster dynamic adjustments of voltages and clocks, and the improved 14nm process allows much higher frequencies combined with better efficiency than before.

Performance

At 2.5-4 GHz, the Core i7-7660U has a slightly lower frequency (except for the single-core Turbo) compared to the Core i7-7600U, but the CPU part can also use the 64 MB eDRAM, so the performance should be similar.

Graphics

The integrated Intel Iris Plus 640 Graphics is the GT3e model of the Kaby Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1050 MHz and the performance is comparable to a GeForce 920MX thanks to fast eDRAM cache. However, there aren't any significant improvements compared to the old Iris Pro 540, so modern games can often not be played smoothly or only at the lowest or medium settings, respectively.

Contrary to Skylake, Kaby lake now also supports H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors announced in January should also support HDCP 2.2.

Power Consumption

The chip is manufactured in an improved 14nm process with FinFET transistors, which improves the efficiency even further. Intel still specifies the TDP with 15 Watts, which is typical for ULV chips. Depending on the usage scenario, the TDP can vary between 7.5 (cTDP Down) and 25 Watts.

SeriesIntel Kaby Lake
CodenameKaby Lake
Series: Kaby Lake Kaby Lake
Intel Core i7-7700K compare4200 - 4500 MHz4 / 88 MB
Intel Core i7-7700 compare3600 - 4200 MHz4 / 88 MB
Intel Xeon E3-1535M v6 compare3100 - 4200 MHz4 / 88 MB
Intel Core i7-7920HQ compare3100 - 4100 MHz4 / 88 MB
Intel Core i7-7700T compare2900 - 3800 MHz4 / 88 MB
Intel Core i5-7600K compare3800 - 4200 MHz4 / 48 MB
Intel Xeon E3-1505M v6 compare3000 - 4000 MHz4 / 88 MB
Intel Core i7-7820HQ compare2900 - 3900 MHz4 / 88 MB
Intel Core i7-7820HK compare2900 - 3900 MHz4 / 88 MB
Intel Core i7-7700HQ compare2800 - 3800 MHz4 / 86 MB
Intel Core i5-7500 compare3400 - 3800 MHz4 / 46 MB
Intel Core i5-7440HQ compare2800 - 3800 MHz4 / 46 MB
Intel Core i7-7567U compare3500 - 4000 MHz2 / 44 MB
» Intel Core i7-7660U2500 - 4000 MHz2 / 44 MB
Intel Core i7-7600U compare2800 - 3900 MHz2 / 44 MB
Intel Core i5-7300HQ compare2500 - 3500 MHz4 / 46 MB
Intel Core i5-7500T compare2700 - 3300 MHz4 / 46 MB
Intel Core i5-7287U compare3300 - 3700 MHz2 / 44 MB
Intel Core i7-7560U compare2400 - 3800 MHz2 / 44 MB
Intel Core i5-7360U compare2300 - 3600 MHz2 / 44 MB
Intel Core i5-7267U compare3100 - 3500 MHz2 / 44 MB
Intel Core i7-7500U compare2700 - 3500 MHz2 / 44 MB
Intel Core i5-7300U compare2600 - 3500 MHz2 / 43 MB
Intel Core i5-7260U compare2200 - 3400 MHz2 / 44 MB
Intel Core i5-7200U compare2500 - 3100 MHz2 / 43 MB
Intel Core i3-7100H compare3000 MHz2 / 43 MB
Intel Core i3-7167U compare2800 MHz2 / 43 MB
Intel Core i3-7130U compare2700 MHz2 / 43 MB
Intel Core i7-7Y75 compare1300 - 3600 MHz2 / 44 MB
Intel Core i5-7Y57 compare1200 - 3300 MHz2 / 44 MB
Intel Core i5-7Y54 compare1200 - 3200 MHz2 / 44 MB
Intel Core i3-7100U compare2400 MHz2 / 43 MB
Intel Core m3-7Y32 compare1000 - 3000 MHz2 / 44 MB
Intel Pentium Gold 4415U compare2300 MHz2 / 42 MB
Intel Core m3-7Y30 compare1000 - 2600 MHz2 / 44 MB
Intel Celeron 3965U compare2200 MHz2 / 22 MB
Intel Core i3-7020U compare2300 MHz2 / 43 MB
Intel Celeron 3867U compare1800 MHz2 / 22 MB
Intel Celeron 3865U compare1800 MHz2 / 22 MB
Intel Pentium Gold 4425Y compare1700 MHz2 / 42 MB
Intel Pentium Gold 4415Y compare1600 MHz2 / 42 MB
Intel Pentium Gold 4410Y compare1500 MHz2 / 42 MB
Intel Celeron 3965Y compare1500 MHz2 / 22 MB
Clock Rate2500 - 4000 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache4 MB
Number of Cores / Threads2 / 4
Power Consumption (TDP = Thermal Design Power)15 Watt
Manufacturing Technology14 nm
Max. Temperature100 °C
SocketBGA1356
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
GPUIntel Iris Plus Graphics 640 (300 - 1050 MHz)
64 Bit64 Bit support
Starting Price$415 U.S.
Announcement Date01/03/2017

Benchmarks

Cinebench R15 - CPU Multi 64Bit
min: 397     avg: 404     median: 403.5 (9%)     max: 410 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410Tooltip
Cinebench R11.5 - CPU Multi 64Bit
min: 4.39     avg: 4.5     median: 4.5 (10%)     max: 4.55 Points
Cinebench R10 - Rendering Single 32Bit
min: 6126     avg: 6170     median: 6169.5 (63%)     max: 6213 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 13779     avg: 13809     median: 13808.5 (23%)     max: 13838 Points
wPrime 2.10 - 1024m *
min: 433     avg: 436     median: 435.5 (5%)     max: 438 seconds
wPrime 2.10 - 32m *
min: 12.6     avg: 12.9     median: 12.9 (3%)     max: 13.2 seconds
X264 HD Benchmark 4.0 - Pass 2
min: 25     avg: 25.3     median: 25.3 (15%)     max: 25.6 fps
3DMark 06 - CPU - CPU Score
min: 5193     avg: 5227     median: 5226.5 (35%)     max: 5260 Points
3DMark 11 - Performance Physics 1280x720
min: 4463     avg: 5069     median: 5230 (24%)     max: 5513 points
3DMark - Cloud Gate Standard Physics 1280x720
min: 3823     avg: 3936     median: 3935.5 (10%)     max: 4048 Points
3DMark - Fire Strike Physics 1920x1080
min: 5412     avg: 5561     median: 5560.5 (17%)     max: 5709 Points
3DMark - Time Spy CPU 2560x1440
min: 1979     avg: 1990     median: 1989.5 (14%)     max: 2000 Points
Sunspider - 1.0 Total Score *
min: 65.2     avg: 65.6     median: 65.6 (1%)     max: 66 ms
Octane V2 - Total Score
min: 35767     avg: 36437     median: 36436.5 (70%)     max: 37106 Points
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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v1.15

Reviews for the Intel Kaby Lake i7-7660U processor

Microsoft Surface Laptop i7 (Intel Iris Plus Graphics 640, 13.5")
» Microsoft Surface (i7-7660U) Laptop Review - Review
» Microsoft Surface Laptop i7 - External Review

Microsoft Surface Pro (2017) i7 (Intel Iris Plus Graphics 640, 12.3")
» Microsoft Surface Pro (2017) (i7, 512 GB, 16 GB) Convertible Review - Review
» Microsoft Surface Pro (2017) i7 - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Kaby Lake

» Intel Kaby Lake i7-7740X
   4.3 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7700K
   4.2 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7700
   3.6 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake E3-1535M v6
   3.1 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7920HQ
   3.1 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7700T
   2.9 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i5-7600K
   3.8 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake E3-1505M v6
   3 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7820HQ
   2.9 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7820HK
   2.9 GHz / 1 MB L2 + 8 MB L3
» Intel Kaby Lake i7-7700HQ
   2.8 GHz / 1 MB L2 + 6 MB L3
» Intel Kaby Lake i5-7500
   3.4 GHz / 1 MB L2 + 6 MB L3
» Intel Kaby Lake i5-7440HQ
   2.8 GHz / 1 MB L2 + 6 MB L3
» Intel Kaby Lake i7-7567U
   3.5 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i7-7660U
   2.5 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i7-7600U
   2.8 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7300HQ
   2.5 GHz / 1 MB L2 + 6 MB L3
» Intel Kaby Lake i5-7500T
   2.7 GHz / 1 MB L2 + 6 MB L3
» Intel Kaby Lake i5-7287U
   3.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i7-7560U
   2.4 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7360U
   2.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7267U
   3.1 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i7-7500U
   2.7 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7300U
   2.6 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake i5-7260U
   2.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7200U
   2.5 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake i3-7100H
   3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake i3-7167U
   2.8 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake i3-7130U
   2.7 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake i7-7Y75
   1.3 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7Y57
   1.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i5-7Y54
   1.2 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake i3-7100U
   2.4 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake m3-7Y32
   1 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake Pentium 4415U
   2.3 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake m3-7Y30
   1 GHz / 0.5 MB L2 + 4 MB L3
» Intel Kaby Lake Celeron 3965U
   2.2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake i3-7020U
   2.3 GHz / 0.5 MB L2 + 3 MB L3
» Intel Kaby Lake Celeron 3867U
   1.8 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake Celeron 3865U
   1.8 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake Pentium 4425Y
   1.7 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake Pentium 4415Y
   1.6 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake Pentium 4410Y
   1.5 GHz / 0.5 MB L2 + 2 MB L3
» Intel Kaby Lake Celeron 3965Y
   1.5 GHz / 0.5 MB L2 + 2 MB L3

Surrounding CPUs

- AMD Raven Ridge (Ryzen 2000 APU) R5 2600H
   3.2 GHz / 2 MB + 4 MB
- Intel Ice Lake i5-1030NG7
   1.1 GHz / 2 MB + 6 MB
- Intel Ice Lake i5-1030G7
   0.8 GHz / 2 MB + 6 MB
- Intel Ice Lake i5-1030G4
   0.7 GHz / 2 MB + 6 MB
- Intel Ice Lake i3-1005G1
   1.2 GHz / 1 MB + 4 MB
» Intel Kaby Lake i7-7660U
   2.5 GHz / 0.5 MB L2 + 4 MB L3
+ Intel Kaby Lake i7-7600U
   2.8 GHz / 512 KB + 4096 KB
+ Intel Core i7 4712HQ
   2.3 GHz / 1024 KB + 6144 KB
+ Intel Core i7 4712MQ
   2.3 GHz / 1024 KB + 6144 KB
+ Intel Core i7 4750HQ
   2 GHz / 1024 KB + 6144 KB
+ Intel Core i7 3635QM
   2.4 GHz / 1024 KB + 6144 KB
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > Intel Core i7 > Intel Core i7-7660U Notebook Processor
Klaus Hinum, 2017-01- 4 (Update: 2017-07- 1)