Intel Core i7-7660U vs Intel Core i7-7700

Intel Core i7-7660U

► remove from comparison 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.

Intel Core i7-7700

► remove from comparison

The Intel Core i7-7700 is a fast quad-core processor for desktops based on the Kaby Lake architecture and was announced in January 2017. It is the top model of the 65 Watt consumer Kaby-Lake-H series at the time of the announcement. The faster CPUs, like the Core i7-7700K, are specified with 91 Watt. Besides four cores including Hyper-Threading (8 threads) support running at 3.6 - 4.2 GHz, the processor is also equipped with the HD Graphics 630 GPU as well as a dual-channel memory controller (DDR3L-1600/DDR4-2400). It is manufactured in a 14nm process with FinFET transistors.

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.

Power Consumption

The chip is manufactured in an improved 14nm process with FinFET transistors, which improves the efficiency slightly.

Intel Core i7-7660UIntel Core i7-7700
Intel Kaby LakeIntel Kaby Lake
Kaby LakeKaby Lake
Series: Kaby Lake Kaby Lake
Intel Core i7-7700K compare4.2 - 4.5 GHz4 / 88 MB
Intel Core i7-77003.6 - 4.2 GHz4 / 88 MB
Intel Xeon E3-1535M v6 compare3.1 - 4.2 GHz4 / 88 MB
Intel Core i7-7920HQ compare3.1 - 4.1 GHz4 / 88 MB
Intel Core i7-7700T compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i5-7600K compare3.8 - 4.2 GHz4 / 48 MB
Intel Xeon E3-1505M v6 compare3 - 4 GHz4 / 88 MB
Intel Core i7-7820HQ compare2.9 - 3.9 GHz4 / 88 MB
Intel Core i7-7820HK compare2.9 - 3.9 GHz4 / 88 MB
Intel Core i7-7700HQ compare2.8 - 3.8 GHz4 / 86 MB
Intel Core i5-7500 compare3.4 - 3.8 GHz4 / 46 MB
Intel Core i5-7440HQ compare2.8 - 3.8 GHz4 / 46 MB
Intel Core i7-7567U compare3.5 - 4 GHz2 / 44 MB
» Intel Core i7-7660U2.5 - 4 GHz2 / 44 MB
Intel Core i7-7600U compare2.8 - 3.9 GHz2 / 44 MB
Intel Core i5-7300HQ compare2.5 - 3.5 GHz4 / 46 MB
Intel Core i5-7500T compare2.7 - 3.3 GHz4 / 46 MB
Intel Core i5-7287U compare3.3 - 3.7 GHz2 / 44 MB
Intel Core i7-7560U compare2.4 - 3.8 GHz2 / 44 MB
Intel Core i5-7360U compare2.3 - 3.6 GHz2 / 44 MB
Intel Core i5-7267U compare3.1 - 3.5 GHz2 / 44 MB
Intel Core i7-7500U compare2.7 - 3.5 GHz2 / 44 MB
Intel Core i5-7300U compare2.6 - 3.5 GHz2 / 43 MB
Intel Core i5-7260U compare2.2 - 3.4 GHz2 / 44 MB
Intel Core i5-7200U compare2.5 - 3.1 GHz2 / 43 MB
Intel Core i3-7100H compare3 GHz2 / 43 MB
Intel Core i3-7167U compare2.8 GHz2 / 43 MB
Intel Core i3-7130U compare2.7 GHz2 / 43 MB
Intel Core i7-7Y75 compare1.3 - 3.6 GHz2 / 44 MB
Intel Core i5-7Y57 compare1.2 - 3.3 GHz2 / 44 MB
Intel Core i5-7Y54 compare1.2 - 3.2 GHz2 / 44 MB
Intel Core i3-7100U compare2.4 GHz2 / 43 MB
Intel Core m3-7Y32 compare1 - 3 GHz2 / 44 MB
Intel Pentium Gold 4415U compare2.3 GHz2 / 42 MB
Intel Core m3-7Y30 compare1 - 2.6 GHz2 / 44 MB
Intel Celeron 3965U compare2.2 GHz2 / 22 MB
Intel Core i3-7020U compare2.3 GHz2 / 43 MB
Intel Celeron 3867U compare1.8 GHz2 / 22 MB
Intel Celeron 3865U compare1.8 GHz2 / 22 MB
Intel Pentium Gold 4425Y compare1.7 GHz2 / 42 MB
Intel Pentium Gold 4415Y compare1.6 GHz2 / 42 MB
Intel Pentium Gold 4410Y compare1.5 GHz2 / 42 MB
Intel Celeron 3965Y compare1.5 GHz2 / 22 MB
Intel Core i7-7700K compare4.2 - 4.5 GHz4 / 88 MB
» Intel Core i7-77003.6 - 4.2 GHz4 / 88 MB
Intel Xeon E3-1535M v6 compare3.1 - 4.2 GHz4 / 88 MB
Intel Core i7-7920HQ compare3.1 - 4.1 GHz4 / 88 MB
Intel Core i7-7700T compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i5-7600K compare3.8 - 4.2 GHz4 / 48 MB
Intel Xeon E3-1505M v6 compare3 - 4 GHz4 / 88 MB
Intel Core i7-7820HQ compare2.9 - 3.9 GHz4 / 88 MB
Intel Core i7-7820HK compare2.9 - 3.9 GHz4 / 88 MB
Intel Core i7-7700HQ compare2.8 - 3.8 GHz4 / 86 MB
Intel Core i5-7500 compare3.4 - 3.8 GHz4 / 46 MB
Intel Core i5-7440HQ compare2.8 - 3.8 GHz4 / 46 MB
Intel Core i7-7567U compare3.5 - 4 GHz2 / 44 MB
Intel Core i7-7660U2.5 - 4 GHz2 / 44 MB
Intel Core i7-7600U compare2.8 - 3.9 GHz2 / 44 MB
Intel Core i5-7300HQ compare2.5 - 3.5 GHz4 / 46 MB
Intel Core i5-7500T compare2.7 - 3.3 GHz4 / 46 MB
Intel Core i5-7287U compare3.3 - 3.7 GHz2 / 44 MB
Intel Core i7-7560U compare2.4 - 3.8 GHz2 / 44 MB
Intel Core i5-7360U compare2.3 - 3.6 GHz2 / 44 MB
Intel Core i5-7267U compare3.1 - 3.5 GHz2 / 44 MB
Intel Core i7-7500U compare2.7 - 3.5 GHz2 / 44 MB
Intel Core i5-7300U compare2.6 - 3.5 GHz2 / 43 MB
Intel Core i5-7260U compare2.2 - 3.4 GHz2 / 44 MB
Intel Core i5-7200U compare2.5 - 3.1 GHz2 / 43 MB
Intel Core i3-7100H compare3 GHz2 / 43 MB
Intel Core i3-7167U compare2.8 GHz2 / 43 MB
Intel Core i3-7130U compare2.7 GHz2 / 43 MB
Intel Core i7-7Y75 compare1.3 - 3.6 GHz2 / 44 MB
Intel Core i5-7Y57 compare1.2 - 3.3 GHz2 / 44 MB
Intel Core i5-7Y54 compare1.2 - 3.2 GHz2 / 44 MB
Intel Core i3-7100U compare2.4 GHz2 / 43 MB
Intel Core m3-7Y32 compare1 - 3 GHz2 / 44 MB
Intel Pentium Gold 4415U compare2.3 GHz2 / 42 MB
Intel Core m3-7Y30 compare1 - 2.6 GHz2 / 44 MB
Intel Celeron 3965U compare2.2 GHz2 / 22 MB
Intel Core i3-7020U compare2.3 GHz2 / 43 MB
Intel Celeron 3867U compare1.8 GHz2 / 22 MB
Intel Celeron 3865U compare1.8 GHz2 / 22 MB
Intel Pentium Gold 4425Y compare1.7 GHz2 / 42 MB
Intel Pentium Gold 4415Y compare1.6 GHz2 / 42 MB
Intel Pentium Gold 4410Y compare1.5 GHz2 / 42 MB
Intel Celeron 3965Y compare1.5 GHz2 / 22 MB
2500 - 4000 MHz3600 - 4200 MHz
128 KB256 KB
512 KB1 MB
4 MB8 MB
2 / 44 / 8
15 65
14 14
100 °C
BGA1356FCLGA1151
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDDR3(L)-1600/DDR4-2400 Memory Controller, HyperThreading, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro
iGPUIntel Iris Plus Graphics 640 (300 - 1050 MHz)Intel HD Graphics 630 (350 - 1150 MHz)
Architecturex86x86
$415 U.S.$303 U.S.
Intel Kaby Lake i7-7700

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 397     avg: 404     median: 403.5 (9%)     max: 410 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410Tooltip
min: 836     avg: 861     median: 857 (19%)     max: 889 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620630640650660670680690700710720730740750760770780790800810820830840850860870Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 154     avg: 159     median: 158.5 (58%)     max: 163 Points
min: 153     avg: 171     median: 178 (65%)     max: 183 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 4.39     avg: 4.5     median: 4.5 (9%)     max: 4.55 Points
9.5 Points (19%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.84     avg: 1.9     median: 1.9 (59%)     max: 1.89 Points
2 Points (64%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 6126     avg: 6170     median: 6169.5 (55%)     max: 6213
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 13779     avg: 13809     median: 13808.5 (23%)     max: 13838
wPrime 2.10 - wPrime 2.0 1024m *
min: 433     avg: 436     median: 435.5 (5%)     max: 438 s
210 s (2%)
wPrime 2.10 - wPrime 2.0 32m *
min: 12.6     avg: 12.9     median: 12.9 (3%)     max: 13.2 s
6.7 s (1%)
X264 HD Benchmark 4.0 - x264 Pass 2
min: 25     avg: 25.3     median: 25.3 (11%)     max: 25.6 fps
49 fps (22%)
X264 HD Benchmark 4.0 - x264 Pass 1
min: 134     avg: 137     median: 136.5 (40%)     max: 139 fps
181 fps (53%)
TrueCrypt - TrueCrypt Serpent
0.2 GB/s (10%)
TrueCrypt - TrueCrypt Twofish
0.4 GB/s (11%)
TrueCrypt - TrueCrypt AES
2.4 GB/s (9%)
Blender 2.79 - Blender 2.79 BMW27 CPU *
1257 Seconds (9%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 5193     avg: 5227     median: 5226.5 (29%)     max: 5260 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
100%
1 i7-7700 +
10.2 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
100%
1 i7-7700 +
22.9 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
100%
1 i7-7700 +
556 s (2%)
3DMark 11 - 3DM11 Performance Physics
min: 4463     avg: 5069     median: 5230 (21%)     max: 5513 Points
min: 10706     avg: 10740     median: 10739.5 (44%)     max: 10773 Points
3DMark - 3DMark Ice Storm Physics
100%
1 i7-7700 +
min: 54177     avg: 57570     median: 57569.5 (37%)     max: 60962 Points
3DMark - 3DMark Ice Storm Extreme Physics
100%
1 i7-7700 +
53710 Points (57%)
3DMark - 3DMark Ice Storm Unlimited Physics
57582 Points (60%)
3DMark - 3DMark Cloud Gate Physics
min: 3823     avg: 3936     median: 3935.5 (10%)     max: 4048 Points
min: 8301     avg: 8650     median: 8650 (22%)     max: 8999 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 5412     avg: 5561     median: 5560.5 (14%)     max: 5709 Points
min: 11520     avg: 12081     median: 12081 (31%)     max: 12642 Points
3DMark - 3DMark Time Spy CPU
min: 1979     avg: 1990     median: 1989.5 (14%)     max: 2000 Points
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
8570 (13%)
Geekbench 3 - Geekbench 3 64 Bit Single-Core
4074 (83%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
4603 (71%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
8952 (22%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
4786 (65%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
9320 (15%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 927     avg: 938     median: 937.7 (2%)     max: 948.4 ms
Sunspider - Sunspider 1.0 Total Score *
min: 65.2     avg: 65.6     median: 65.6 (1%)     max: 66 ms
Octane V2 - Octane V2 Total Score
min: 35767     avg: 36437     median: 36436.5 (58%)     max: 37106 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 39.2     avg: 40     median: 40 (11%)     max: 40.8 Watt

Average Benchmarks Intel Core i7-7660U → 100% n=11

Average Benchmarks Intel Core i7-7700 → 165% n=11

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)