Intel Core i7-7660U vs Intel Core i7-7567U

Intel Core i7-7660U

► remove Intel 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.

Intel Core i7-7567U

► remove Intel 7567U

The Intel Core i7-7567U is a fast dual-core SoC for notebooks based on the Kaby Lake architecture and was announced in January 2017. The CPU has two processor cores clocked at 3.5-4 GHz (two cores up to 3.9 GHz). The processor can execute up to four threads simultaneously thanks to Hyper Threading. It is also equipped with an Intel Iris Plus Graphics 650 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 i7-7560, the 7567U has a higher TDP of 28 vs. 15 Watts as well as higher clocks.

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

Thanks to the high clocks pf up to 4 GHz and 64 MB eDRAM (can also be used as L4 cache by the CPU), the Core i7-7567U is the fastest dual-core for notebooks in the beginning of 2017. It competes with lower clocked quad-core models and can convince by the excellent single-thread performance. Some games might require a real quad-core though and could not run perfectly on the dual-core, despite Hyper Threading.

Graphics

The integrated Intel Iris Plus 650 Graphics is the GT3e model of the Kaby Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1100 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 550, 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 specifies the TDP with 28 Watts, which can be reduced to 23 Watts (cTDP Down) depending on the usage scenario. The TDP is pretty high compared to the common 15-Watt TDP for dual-core processors, but allows a better utilization of CPU and GPU Turbo.

Intel Core i7-7660UIntel Core i7-7567U
Intel Core i7Intel Core i7
Kaby LakeKaby Lake
: Core i7 Kaby Lake
Intel Core i7-7920HQ (compare)3100 - 4100 MHz4 / 88 MB
Intel Core i7-7820HQ (compare)2900 - 3900 MHz4 / 88 MB
Intel Core i7-7820HK (compare)2900 - 3900 MHz4 / 88 MB
Intel Core i7-7700HQ (compare)2800 - 3800 MHz4 / 86 MB
Intel Core i7-7567U3500 - 4000 MHz2 / 44 MB
» Intel Core i7-7660U2500 - 4000 MHz2 / 44 MB
Intel Core i7-7600U (compare)2800 - 3900 MHz2 / 44 MB
Intel Core i7-7560U (compare)2400 - 3800 MHz2 / 44 MB
Intel Core i7-7500U (compare)2700 - 3500 MHz2 / 44 MB
Intel Core i7-7Y75 (compare)1300 - 3600 MHz2 / 44 MB
Intel Core i7-7920HQ (compare)3100 - 4100 MHz4 / 88 MB
Intel Core i7-7820HQ (compare)2900 - 3900 MHz4 / 88 MB
Intel Core i7-7820HK (compare)2900 - 3900 MHz4 / 88 MB
Intel Core i7-7700HQ (compare)2800 - 3800 MHz4 / 86 MB
» Intel Core i7-7567U3500 - 4000 MHz2 / 44 MB
Intel Core i7-7660U2500 - 4000 MHz2 / 44 MB
Intel Core i7-7600U (compare)2800 - 3900 MHz2 / 44 MB
Intel Core i7-7560U (compare)2400 - 3800 MHz2 / 44 MB
Intel Core i7-7500U (compare)2700 - 3500 MHz2 / 44 MB
Intel Core i7-7Y75 (compare)1300 - 3600 MHz2 / 44 MB
2500 - 4000 MHz3500 - 4000 MHz
128 KB128 KB
512 KB512 KB
4 MB4 MB
2 / 42 / 4
15 28
14 14
100 °C100 °C
BGA1356BGA1356
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel Iris Plus Graphics 640 (300 - 1050 MHz)Intel Iris Plus Graphics 650 (300 - 1100 MHz)
$415 U.S.$415 U.S.
Intel Core i7 7567U

Cinebench R15 - CPU Multi 64Bit
min: 397     avg: 403.5     median: 403.5 (9%)     max: 410 Points
432 Points (10%)
Cinebench R15 - CPU Single 64Bit
min: 154     avg: 158.5     median: 158.5 (73%)     max: 163 Points
159 Points (73%)
Cinebench R11.5 - CPU Multi 64Bit
min: 4.39     avg: 4.5     median: 4.5 (17%)     max: 4.55 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.84     avg: 1.9     median: 1.9 (76%)     max: 1.89 Points
Cinebench R10 - Rendering Single 32Bit
min: 6126     avg: 6169.5     median: 6169.5 (67%)     max: 6213 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 13779     avg: 13808.5     median: 13808.5 (28%)     max: 13838 Points
wPrime 2.0x - 1024m *
min: 433     avg: 435.5     median: 435.5 (5%)     max: 438 seconds
wPrime 2.0x - 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 (1%)     max: 25.6 fps
X264 HD Benchmark 4.0 - Pass 1
min: 134     avg: 136.5     median: 136.5 (51%)     max: 139 fps
TrueCrypt - Serpent Mean 100MB
0.2 GB/s (12%)
TrueCrypt - Twofish Mean 100MB
0.4 GB/s (13%)
TrueCrypt - AES Mean 100MB
2.4 GB/s (12%)
Blender 2.79 *
1257 Seconds (13%)
3DMark 06 - CPU
min: 5193     avg: 5226.5     median: 5226.5 (36%)     max: 5260 Points
3DMark 11 - Performance Physics 1280x720
min: 4463     avg: 5068.7     median: 5230 (28%)     max: 5513 points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
57582 Points (67%)
3DMark - Cloud Gate Standard Physics 1280x720
min: 3823     avg: 3935.5     median: 3935.5 (10%)     max: 4048 Points
3DMark - Fire Strike Physics 1920x1080
min: 5412     avg: 5560.5     median: 5560.5 (21%)     max: 5709 Points
Geekbench 3 - 64 Bit Multi-Core Score
8570 Points (23%)
8847 Points (24%)
Geekbench 3 - 64 Bit Single-Core Score
4074 Points (83%)
4150 Points (84%)
Geekbench 4.0 - Compute OpenCL Score
29573 Points (10%)
Geekbench 4.0 - 64 Bit Multi-Core Score
8952 Points (33%)
Geekbench 4.0 - 64 Bit Single-Core Score
4603 Points (80%)
Geekbench 4.3 - 64 Bit Single-Core Score
4786 Points (76%)
Geekbench 4.3 - 64 Bit Multi-Core Score
9320 Points (26%)
Mozilla Kraken 1.1 - Total Score *
min: 927     avg: 937.7     median: 937.7 (2%)     max: 948.4 ms
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: 36436.5     median: 36436.5 (73%)     max: 37106 Points
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
100%
1 7660U +
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
100%
1 7660U +
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt

Average Benchmarks Intel Core i7-7660U → 100%

Average Benchmarks Intel Core i7-7567U → 103%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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Redaktion, 2017-09- 8 (Update: 2017-09-11)