Intel Core i7-6600U vs Intel Core i7-6650U

Intel Core i7-6600U

► remove from comparison Intel 6600U

The Intel Core i7-6600U is an ULV (ultra low voltage) dual-core SoC based on the Skylake architecture. In September 2015, it's the fastest CPU of the 15 W series, which can be found in ultrabooks as well as normal notebooks. In addition to two CPU cores with Hyper-Threading clocked at 2.6 - 3.4 GHz (2 cores: max. 3.2 GHz), the chip also integrates an HD Graphics 520 GPU and a dual-channel DDR4-2133/DDR3L-1600 memory controller. The SoC is manufactured using a 14 nm process with FinFET transistors.

Architecture

Skylake replaces both Haswell and Broadwell and brings the same microarchitecture in every TDP class from 4.5 to 45 W. The extensive improvements of the Skylake design include increased out-of-order buffers, optimized prefetching and branch prediction as well as additional performance gains through Hyper-Threading. Overall, however, performance per clock has been increased by only 5 to 10 percent (compared to Haswell) respectively under 5 percent (compard to Broadwell), which is quite modest for a new architecture ("Tock").

Performance

According to the specified clock rates and the improved architecture, the Core i7-6600U should perform similar to a Core i5-4310M (Haswell, 37 W) and is one of the fastest ULV dual-cores as of late 2015. Thus, the CPU has sufficient power for office and multimedia purposes as well as more demanding applications and multitasking.

Graphics

The integrated graphics unit called HD Graphics 520 represents the "GT2" version of the Skylake GPU (Intel Gen. 9). The 24 Execution Units, also called EUs, are clocked at 300 - 1050 MHz and offer a performance somewhere in range of a dedicated GeForce 820M. Games of 2015 can thus be played smoothly in low settings. For more information about performance and features, check our page for the HD Graphics 520.

Power Consumption

Specified at a TDP of 15 W (including CPU, GPU and memory controller), the CPU is best suited for small notebooks and ultrabooks (11-inches and above). Optionally, the TDP can be lowered to 7.5 watts (cTDP down), reducing both heat dissipation and performance and allowing even more compact designs.

Intel Core i7-6650U

► remove from comparison Intel 6650U

The Intel Core i7-6650U is an ULV (ultra low voltage) dual-core SoC based on the Skylake architecture. In September 2015, it's the fastest CPU of the 15 W series (besides the i7-6600U) and can be found in ultrabooks as well as normal notebooks. In addition to two CPU cores with Hyper-Threading clocked at 2.2 - 3.4 GHz (2 cores: max. 3.2 GHz), the chip also integrates an Iris Graphics 540 GPU with 64 MB of dedicated eDRAM memory and a dual-channel DDR4-2133/DDR3L-1600 memory controller. The SoC is manufactured using a 14 nm process with FinFET transistors.

Architecture

Skylake replaces both Haswell and Broadwell and brings the same microarchitecture in every TDP class from 4.5 to 45 W. The extensive improvements of the Skylake design include increased out-of-order buffers, optimized prefetching and branch prediction as well as additional performance gains through Hyper-Threading. Overall, however, performance per clock has been increased by only 5 to 10 percent (compared to Haswell) respectively under 5 percent (compard to Broadwell), which is quite modest for a new architecture ("Tock").

Furthermore, the organisation of the eDRAM cache has been modified. Instead of acting like a victim cache, which has to be adressed via the L3/LLC, the eDRAM can now be adressed directly by programms just like the main memory. The size is still 128 MB for the quad-core models (4C + GT4e), while the dual-core chips (2C + GT3e) only offer 64 MB.

Performance

According to the specified clock rates and the improved architecture, the Core i7-6650U should perform similar to a Core i5-4310M (Haswell, 37 W) and is one of the fastest ULV dual-cores as of late 2015. Thus, the CPU has sufficient power for office and multimedia purposes as well as more demanding applications and multitasking.

Graphics

The integrated graphics unit called Iris Graphics 540 represents the "GT3e" version of the Skylake GPU (Intel Gen. 9). The 48 Execution Units, also called EUs, are clocked at 300 - 1050 MHz and offer (thanks to the fast eDRAM cache) a performance sligthly above a dedicated GeForce 920M. Games of 2015 can thus be played smoothly in low or medium settings. For more information about performance and features, check our page for the Iris Graphics 540.

Power Consumption

Specified at a TDP of 15 W (including CPU, GPU and memory controller), the CPU is best suited for small notebooks and ultrabooks (11-inches and above). Optionally, the TDP can be lowered to 9.5 watts (cTDP down), reducing both heat dissipation and performance and allowing even more compact designs.

Intel Core i7-6600UIntel Core i7-6650U
Intel Core i7Intel Core i7
SkylakeSkylake
Series: Core i7 Skylake
Intel Core i7-6920HQ compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-6970HQ compare2.8 - 3.7 GHz4 / 88 MB
Intel Core i7-6870HQ compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6820HK compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6820HQ compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6770HQ compare2.6 - 3.5 GHz4 / 86 MB
Intel Core i7-6700HQ compare2.6 - 3.5 GHz4 / 86 MB
Intel Core i7-6567U compare3.3 - 3.6 GHz2 / 44 MB
» Intel Core i7-6600U2.6 - 3.4 GHz2 / 44 MB
Intel Core i7-6650U2.2 - 3.4 GHz2 / 44 MB
Intel Core i7-6560U compare2.2 - 3.2 GHz2 / 44 MB
Intel Core i7-6500U compare2.5 - 3.1 GHz2 / 44 MB
Intel Core i7-6920HQ compare2.9 - 3.8 GHz4 / 88 MB
Intel Core i7-6970HQ compare2.8 - 3.7 GHz4 / 88 MB
Intel Core i7-6870HQ compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6820HK compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6820HQ compare2.7 - 3.6 GHz4 / 88 MB
Intel Core i7-6770HQ compare2.6 - 3.5 GHz4 / 86 MB
Intel Core i7-6700HQ compare2.6 - 3.5 GHz4 / 86 MB
Intel Core i7-6567U compare3.3 - 3.6 GHz2 / 44 MB
Intel Core i7-6600U2.6 - 3.4 GHz2 / 44 MB
» Intel Core i7-6650U2.2 - 3.4 GHz2 / 44 MB
Intel Core i7-6560U compare2.2 - 3.2 GHz2 / 44 MB
Intel Core i7-6500U compare2.5 - 3.1 GHz2 / 44 MB
2600 - 3400 MHz2200 - 3400 MHz
128 KB128 KB
512 KB512 KB
4 MB4 MB
2 / 42 / 4
15 15
14 14
99 mm2
100 °C100 °C
BGABGA
Dual-Channel DDR3L-1600/DDR4-2133 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, vPro, TXTDual-Channel DDR3L-1600/DDR4-2133 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, vPro, TXT
iGPUIntel HD Graphics 520 (300 - 1050 MHz)Intel Iris Graphics 540 (300 - 1050 MHz)
Architecturex86x86
$393 U.S.$415 U.S.
Intel Core i7 6600UIntel Core i7 6650U

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 306     avg: 324     median: 321 (7%)     max: 348 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330Tooltip
342 Points (8%)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 118     avg: 137     median: 141 (52%)     max: 144 Points
132 Points (49%)
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 3.25     avg: 3.6     median: 3.6 (7%)     max: 3.84 Points
3.8 Points (8%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.19     avg: 1.6     median: 1.6 (51%)     max: 1.63 Points
1.5 Points (48%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 3260     avg: 5259     median: 5298 (47%)     max: 7045
5223 (47%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 9140     avg: 11541     median: 11320 (19%)     max: 14948
11564 (19%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 14391     avg: 14724     median: 14412 (14%)     max: 15369 Points
14833 Points (14%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 6863     avg: 7593     median: 6890 (52%)     max: 9027 Points
6787 Points (51%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 447.319     avg: 503     median: 509.2 (6%)     max: 525.775 s
446 s (5%)
wPrime 2.10 - wPrime 2.0 32m *
min: 14.079     avg: 15.3     median: 14.7 (3%)     max: 19.264 s
14.9 s (3%)
WinRAR - WinRAR 4.0
100%
1 6600U +
min: 2264     avg: 2450     median: 2449.5 (16%)     max: 2635
X264 HD Benchmark 4.0 - x264 Pass 2
100%
1 6600U +
min: 19.52     avg: 20.8     median: 20 (9%)     max: 22.62 fps
X264 HD Benchmark 4.0 - x264 Pass 1
100%
1 6600U +
min: 103.7     avg: 111     median: 109 (32%)     max: 120.37 fps
TrueCrypt - TrueCrypt Serpent
min: 0.193     avg: 0.2     median: 0.2 (8%)     max: 0.201 GB/s
0.2 GB/s (8%)
TrueCrypt - TrueCrypt Twofish
min: 0.317     avg: 0.3     median: 0.3 (9%)     max: 0.343 GB/s
0.3 GB/s (9%)
TrueCrypt - TrueCrypt AES
min: 1.9     avg: 1.9     median: 1.9 (7%)     max: 2 GB/s
2 GB/s (7%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 6600U +
min: 4107     avg: 4334     median: 4333.5 (24%)     max: 4560 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 10.905     avg: 11.1     median: 11.1 (2%)     max: 11.345 s
11.7 s (3%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 24.753     avg: 25.2     median: 25.1 (1%)     max: 26.034 s
26.3 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 558.339     avg: 578     median: 572.4 (3%)     max: 609.647 s
613 s (3%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 6600U +
12712 Points (15%)
3DMark 11 - 3DM11 Performance Physics
min: 4034     avg: 4479     median: 4606.5 (19%)     max: 4780 Points
4919 Points (20%)
3DMark - 3DMark Ice Storm Physics
min: 31340     avg: 38138     median: 37127 (24%)     max: 42543 Points
44259 Points (28%)
3DMark - 3DMark Ice Storm Extreme Physics
min: 26121     avg: 37420     median: 39364 (42%)     max: 42164 Points
43694 Points (46%)
3DMark - 3DMark Ice Storm Unlimited Physics
min: 42770     avg: 43159     median: 43159 (45%)     max: 43548 Points
44857 Points (46%)
3DMark - 3DMark Cloud Gate Physics
min: 3073     avg: 3543     median: 3569 (9%)     max: 3745 Points
3639 Points (9%)
3DMark - 3DMark Fire Strike Standard Physics
min: 4279     avg: 5086     median: 5134.5 (13%)     max: 5344 Points
5372 Points (14%)
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
100%
1 6600U +
min: 6303     avg: 6693     median: 6692.5 (12%)     max: 7082
Geekbench 3 - Geekbench 3 32 Bit Single-Core
100%
1 6600U +
min: 3060     avg: 3222     median: 3222 (66%)     max: 3384
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
100%
1 6600U +
min: 6618     avg: 7032     median: 7031.5 (11%)     max: 7445
Geekbench 3 - Geekbench 3 64 Bit Single-Core
100%
1 6600U +
min: 3191     avg: 3369     median: 3369 (69%)     max: 3547
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
100%
1 6600U +
min: 1030.1     avg: 1601     median: 1047.6 (2%)     max: 3827 ms
Sunspider - Sunspider 1.0 Total Score *
100%
1 6600U +
min: 77.3     avg: 138     median: 134.4 (1%)     max: 205 ms
Octane V2 - Octane V2 Total Score
100%
1 6600U +
min: 8244     avg: 28548     median: 32986 (52%)     max: 35045 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
100%
1 6600U +
28.9 Watt (8%)
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
100%
1 6600U +
26.2 Watt (7%)

Average Benchmarks Intel Core i7-6600U → 100% n=22

Average Benchmarks Intel Core i7-6650U → 103% n=22

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