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

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 i7-7700HQ

► remove from comparison Intel i7-7700HQ

The Intel Core i7-7700HQ is a fast quad-core processor for notebooks based on the Kaby Lake H architecture (7th generation Core), which was announced in January 2017 at CES. It is the successor to the Core i7-6700HQ from the Skylake generation and is manufactured in an improved 14 nm+ process, so the clocks are 200 MHz higher at the same TDP. The architecture was not changed, only the video engine got an update (see our Kaby Lake article).

The integrated graphics card is called Intel HD Graphics 630, but the architecture does not differ from the 530 GPU from the Skylake generation and only the clocks are slightly higher. 

Performance

Thanks to the 200 MHz higher clocks (5.5-7.6% depending on the Boost), the CPU performance is increased and roughly on par with the Core i7-6970HQ (2.8-3.7 GHz but with 128 MB eDRAM). The TDP can also be reduced to 35 Watts (cTDP down), but this will reduce the performance.

Power Consumption

Due to its 45-Watt TDP, the CPU will be used in bigger notebooks with at least 15 inches most of the time.

Intel Core i7-7660UIntel Core i7-7700HQ
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 i7-7700 compare3.6 - 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 i7-7700HQ2.8 - 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 i7-7700 compare3.6 - 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 i7-7700HQ2.8 - 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 MHz2800 - 3800 MHz
128 KB256 KB
512 KB1 MB
4 MB6 MB
2 / 44 / 8
15 45
14 14
100 °C100 °C
BGA1356BGA
Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR3L-1600/DDR4-2133 Memory Controller, AVX, AVX2, Quick Sync, Virtualization, AES-NI save
iGPUIntel Iris Plus Graphics 640 (300 - 1050 MHz)Intel HD Graphics 630 (350 - 1100 MHz)
Architecturex86x86
$415 U.S.$378 U.S.

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i7-7700HQ
41.9 pt (42%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 358     avg: 370     median: 370 (58%)     max: 382 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 1765     avg: 1774     median: 1774 (17%)     max: 1783 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 397     avg: 404     median: 403.5 (9%)     max: 410 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410Tooltip
min: 603     avg: 727     median: 734 (16%)     max: 747 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620630640650660670680690700710720730740750Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 154     avg: 159     median: 158.5 (58%)     max: 163 Points
min: 120     avg: 155     median: 159 (58%)     max: 162 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
min: 6.67     avg: 8     median: 8.1 (16%)     max: 8.23 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.84     avg: 1.9     median: 1.9 (59%)     max: 1.89 Points
min: 1.36     avg: 1.8     median: 1.8 (58%)     max: 1.84 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 6126     avg: 6170     median: 6169.5 (55%)     max: 6213
min: 5426     avg: 5882     median: 5910 (53%)     max: 7214
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 13779     avg: 13809     median: 13808.5 (23%)     max: 13838
min: 19409     avg: 22384     median: 22152 (37%)     max: 29209
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 28341     avg: 28770     median: 28724.5 (27%)     max: 29210 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 7347     avg: 7559     median: 7584 (57%)     max: 7795 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 433     avg: 436     median: 435.5 (5%)     max: 438 s
min: 210.376     avg: 257     median: 225.7 (3%)     max: 379 s
wPrime 2.10 - wPrime 2.0 32m *
min: 12.6     avg: 12.9     median: 12.9 (3%)     max: 13.2 s
min: 6.932     avg: 8.7     median: 7.5 (2%)     max: 20.1 s
wPrime 1.55 - wPrime 1.55 1024m *
212 s (1%)
wPrime 1.55 - wPrime 1.55 32m *
7.6 s (4%)
WinRAR - WinRAR 4.0
min: 3763     avg: 4418     median: 4541.5 (29%)     max: 4903
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
min: 18417     avg: 20916     median: 19916 (16%)     max: 25414 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 3986     avg: 4405     median: 4088 (27%)     max: 5457 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
min: 25     avg: 25.3     median: 25.3 (11%)     max: 25.6 fps
min: 36.55     avg: 44.6     median: 46 (21%)     max: 46.45 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 134     avg: 137     median: 136.5 (40%)     max: 139 fps
min: 156.94     avg: 168     median: 168.4 (50%)     max: 175 fps
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 5.97     avg: 6.2     median: 6 (19%)     max: 6.39 fps
01020Tooltip
TrueCrypt - TrueCrypt Serpent
0.2 GB/s (10%)
min: 0.361     avg: 0.4     median: 0.4 (17%)     max: 0.6 GB/s
TrueCrypt - TrueCrypt Twofish
0.4 GB/s (11%)
min: 0.529     avg: 0.7     median: 0.7 (19%)     max: 0.724 GB/s
TrueCrypt - TrueCrypt AES
2.4 GB/s (9%)
min: 2.4     avg: 4     median: 4.1 (15%)     max: 4.2 GB/s
Blender 2.79 - Blender 2.79 BMW27 CPU *
1257 Seconds (9%)
min: 597     avg: 631     median: 630.9 (4%)     max: 664.8 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.7217     avg: 0.7     median: 0.7 (16%)     max: 0.7605 sec
3DMark 06 - CPU - 3DMark 06 - CPU
min: 5193     avg: 5227     median: 5226.5 (29%)     max: 5260 Points
min: 6876     avg: 7596     median: 7686 (43%)     max: 7839 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 9     avg: 10.3     median: 10 (2%)     max: 14.8 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 22     avg: 23.3     median: 22.7 (1%)     max: 33.4 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 510.672     avg: 565     median: 550.8 (2%)     max: 921.1 s
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 22514     avg: 25520     median: 26567 (31%)     max: 26880 Points
3DMark 11 - 3DM11 Performance Physics
min: 4463     avg: 5069     median: 5230 (21%)     max: 5513 Points
min: 6196     avg: 8408     median: 8838 (36%)     max: 9653 Points
3DMark - 3DMark Ice Storm Physics
min: 13754     avg: 46073     median: 47945 (31%)     max: 52765 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 33185     avg: 46275     median: 47639 (51%)     max: 52753 Points
3DMark - 3DMark Ice Storm Unlimited Physics
57582 Points (60%)
min: 42156     avg: 50621     median: 50806 (53%)     max: 53642 Points
3DMark - 3DMark Cloud Gate Physics
min: 3823     avg: 3936     median: 3935.5 (10%)     max: 4048 Points
min: 5726     avg: 7357     median: 7526 (19%)     max: 7867 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 5412     avg: 5561     median: 5560.5 (14%)     max: 5709 Points
min: 8081     avg: 10465     median: 10629 (27%)     max: 10953 Points
3DMark - 3DMark Time Spy CPU
min: 1979     avg: 1990     median: 1989.5 (14%)     max: 2000 Points
min: 3421     avg: 3965     median: 3973 (28%)     max: 4383 Points
Geekbench 2 - 32 Bit - Geekbench Stream
7620 Points (61%)
Geekbench 2 - 32 Bit - Geekbench Memory
7210 Points (65%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
12792 Points (25%)
Geekbench 2 - 32 Bit - Geekbench Integer
13091 Points (26%)
Geekbench 2 - 32 Bit - Geekbench Total Score
11263 Points (29%)
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
8570 (13%)
min: 13753     avg: 14103     median: 14102.5 (22%)     max: 14452
Geekbench 3 - Geekbench 3 64 Bit Single-Core
4074 (83%)
min: 3532     avg: 3715     median: 3715 (76%)     max: 3898
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
min: 13290     avg: 13780     median: 13936.5 (25%)     max: 14275
Geekbench 3 - Geekbench 3 32 Bit Single-Core
min: 3256     avg: 3641     median: 3675 (75%)     max: 3843
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
4603 (71%)
min: 4119     avg: 4477     median: 4452.5 (69%)     max: 4740
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
8952 (22%)
min: 12384     avg: 13663     median: 14009.5 (34%)     max: 14596
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core