Core i7-7700 vs i7-7660U
Description
Both models i7-7700 and i7-7660U are based on Kaby Lake architecture.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i7-7700 gets a score of 257.5 k points while the i7-7660U gets 132.8 k points.
Summarizing, the i7-7700 is 1.9 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.
The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.
Using the multithread performance as a reference, the i7-7700 gets a score of 257.5 k points while the i7-7660U gets 132.8 k points.
Summarizing, the i7-7700 is 1.9 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906e9
806e9
Core
Kaby Lake-S
Kaby Lake-U
Base frecuency
3.6 GHz
2.5 GHz
Boost frecuency
4.2 GHz
4 GHz
Socket
LGA 1151
BGA 1356
Cores/Threads
4/8
2/4
TDP
65 W
15 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
8192 kB
4096 kB
Date
September 2016
January 2017
Mean monothread perf.
67.33k points
57.46k points
Mean multithread perf.
257.52k points
132.81k points
AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-7700
i7-7660U
Test#1 (Integers)
26.7k
22.46k (x0.84)
Test#2 (FP)
23.7k
19.29k (x0.81)
Test#3 (Generic, ZIP)
5.46k
4.77k (x0.87)
Test#1 (Memory)
11.48k
10.94k (x0.95)
TOTAL
67.33k
57.46k (x0.85)
Multithread
i7-7700
i7-7660U
Test#1 (Integers)
115.97k
56.67k (x0.49)
Test#2 (FP)
108.43k
46.95k (x0.43)
Test#3 (Generic, ZIP)
26.28k
12.36k (x0.47)
Test#1 (Memory)
6.85k
16.84k (x2.46)
TOTAL
257.52k
132.81k (x0.52)
Performance/W
i7-7700
i7-7660U
Test#1 (Integers)
1784 points/W
3778 points/W
Test#2 (FP)
1668 points/W
3130 points/W
Test#3 (Generic, ZIP)
404 points/W
824 points/W
Test#1 (Memory)
105 points/W
1122 points/W
TOTAL
3962 points/W
8854 points/W
Performance/GHz
i7-7700
i7-7660U
Test#1 (Integers)
6356 points/GHz
5614 points/GHz
Test#2 (FP)
5643 points/GHz
4823 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1193 points/GHz
Test#1 (Memory)
2733 points/GHz
2735 points/GHz
TOTAL
16032 points/GHz
14365 points/GHz
Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4