Core i7-7660U vs i7-6900K
Description
The i7-7660U is based on Kaby Lake architecture while the i7-6900K is based on Broadwell.
Using the multithread performance as a reference, the i7-7660U gets a score of 132.8 k points while the i7-6900K gets 427.5 k points.
Summarizing, the i7-6900K is 3.2 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-7660U gets a score of 132.8 k points while the i7-6900K gets 427.5 k points.
Summarizing, the i7-6900K is 3.2 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806e9
406f1
Core
Kaby Lake-U
Broadwell-E
Base frecuency
2.5 GHz
3.2 GHz
Boost frecuency
4 GHz
3.7 GHz
Socket
BGA 1356
LGA 2011-3
Cores/Threads
2/4
8/16
TDP
15 W
140 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
2x256 kB
8x256 kB
Cache L3
4096 kB
20480 kB
Date
January 2017
September 2016
Mean monothread perf.
57.46k points
49.76k points
Mean multithread perf.
132.81k points
427.51k 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
i7-7660U
i7-6900K
Test#1 (Integers)
22.46k
23.11k (x1.03)
Test#2 (FP)
19.29k
17.84k (x0.92)
Test#3 (Generic, ZIP)
4.77k
5.34k (x1.12)
Test#1 (Memory)
10.94k
3.47k (x0.32)
TOTAL
57.46k
49.76k (x0.87)
Multithread
i7-7660U
i7-6900K
Test#1 (Integers)
56.67k
184.19k (x3.25)
Test#2 (FP)
46.95k
181.2k (x3.86)
Test#3 (Generic, ZIP)
12.36k
47.44k (x3.84)
Test#1 (Memory)
16.84k
14.69k (x0.87)
TOTAL
132.81k
427.51k (x3.22)
Performance/W
i7-7660U
i7-6900K
Test#1 (Integers)
3778 points/W
1316 points/W
Test#2 (FP)
3130 points/W
1294 points/W
Test#3 (Generic, ZIP)
824 points/W
339 points/W
Test#1 (Memory)
1122 points/W
105 points/W
TOTAL
8854 points/W
3054 points/W
Performance/GHz
i7-7660U
i7-6900K
Test#1 (Integers)
5614 points/GHz
6247 points/GHz
Test#2 (FP)
4823 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1193 points/GHz
1444 points/GHz
Test#1 (Memory)
2735 points/GHz
938 points/GHz
TOTAL
14365 points/GHz
13450 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