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Core i7-6900K vs i3-7100U


Description
The i7-6900K is based on Broadwell architecture while the i3-7100U is based on Kaby Lake.

Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the i3-7100U gets 79.6 k points.

Summarizing, the i7-6900K is 5.4 times faster than the i3-7100U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406f1
806e9
Core
Broadwell-E
Kaby Lake-U
Architecture
Base frecuency
3.2 GHz
2.4 GHz
Boost frecuency
3.7 GHz
2.4 GHz
Socket
LGA 2011-3
BGA 1356
Cores/Threads
8/16
2/4
TDP
140 W
15 W
Cache L1 (d+i)
8x32+8x32 kB
2x32+2x32 kB
Cache L2
8x256 kB
2x256 kB
Cache L3
20480 kB
3072 kB
Date
September 2016
August 2016
Mean monothread perf.
49.76k points
33.38k points
Mean multithread perf.
427.51k points
79.6k 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
i7-6900K
i3-7100U
Test#1 (Integers)
23.11k
13.46k (x0.58)
Test#2 (FP)
17.84k
13.45k (x0.75)
Test#3 (Generic, ZIP)
5.34k
3.08k (x0.58)
Test#1 (Memory)
3.47k
3.4k (x0.98)
TOTAL
49.76k
33.38k (x0.67)

Multithread

i7-6900K

i3-7100U
Test#1 (Integers)
184.19k
34.95k (x0.19)
Test#2 (FP)
181.2k
33.53k (x0.19)
Test#3 (Generic, ZIP)
47.44k
7.74k (x0.16)
Test#1 (Memory)
14.69k
3.38k (x0.23)
TOTAL
427.51k
79.6k (x0.19)

Performance/W
i7-6900K
i3-7100U
Test#1 (Integers)
1316 points/W
2330 points/W
Test#2 (FP)
1294 points/W
2235 points/W
Test#3 (Generic, ZIP)
339 points/W
516 points/W
Test#1 (Memory)
105 points/W
225 points/W
TOTAL
3054 points/W
5307 points/W

Performance/GHz
i7-6900K
i3-7100U
Test#1 (Integers)
6247 points/GHz
5606 points/GHz
Test#2 (FP)
4822 points/GHz
5606 points/GHz
Test#3 (Generic, ZIP)
1444 points/GHz
1282 points/GHz
Test#1 (Memory)
938 points/GHz
1415 points/GHz
TOTAL
13450 points/GHz
13909 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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4