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Core i7-7700K vs i5-5675R


Description
The i7-7700K is based on Kaby Lake architecture while the i5-5675R is based on Broadwell.

Using the multithread performance as a reference, the i7-7700K gets a score of 292.3 k points while the i5-5675R gets 194.2 k points.

Summarizing, the i7-7700K is 1.5 times faster than the i5-5675R. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
40671
Core
Kaby Lake-S
Bradwell-H
Architecture
Base frecuency
4.2 GHz
3.1 GHz
Boost frecuency
4.5 GHz
3.6 GHz
Socket
LGA 1151
BGA1364
Cores/Threads
4/8
4/4
TDP
95 W
65 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
4096 kB
Date
September 2016
Jun 2015

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-7700K
i5-5675R
Test#1 (Integers)
4629
4141 (-10.56%)
Test#2 (FP)
18925
14355 (-24.15%)
Test#3 (Generic, ZIP)
6221
4940 (-20.59%)
Test#1 (Memory)
13922
5474 (-60.68%)
TOTAL
43698
28910 (-33.84%)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
18529
16021 (-13.54%)
Test#2 (FP)
86487
54597 (-36.87%)
Test#3 (Generic, ZIP)
28778
18694 (-35.04%)
Test#1 (Memory)
9674
16865 (74.34%)
TOTAL
143468
106178 (-25.99%)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-7700K
i5-5675R
Test#1 (Integers)
17549
12881 (-26.60%)
Test#2 (FP)
27822
18271 (-34.33%)
Test#3 (Generic, ZIP)
6796
5120 (-24.65%)
Test#1 (Memory)
14832
5450 (-63.26%)
TOTAL
66999
41722 (-37.73%)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
68395
49914 (-27.02%)
Test#2 (FP)
118805
70302 (-40.83%)
Test#3 (Generic, ZIP)
33336
19689 (-40.94%)
Test#1 (Memory)
17434
16924 (-2.92%)
TOTAL
237970
156830 (-34.10%)

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
i7-7700K
i5-5675R
Test#1 (Integers)
30879
21912 (-29.04%)
Test#2 (FP)
27266
18590 (-31.82%)
Test#3 (Generic, ZIP)
6416
5203 (-18.91%)
Test#1 (Memory)
14011
5723 (-59.16%)
TOTAL
78572
51428 (-34.55%)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
130361
84920 (-34.86%)
Test#2 (FP)
122434
72090 (-41.12%)
Test#3 (Generic, ZIP)
29679
20126 (-32.19%)
Test#1 (Memory)
9830
17065 (73.60%)
TOTAL
292304
194201 (-33.56%)

Performance/W
i7-7700K
i5-5675R
Test#1 (Integers)
1372 points/W
1306 points/W
Test#2 (FP)
1289 points/W
1109 points/W
Test#3 (Generic, ZIP)
312 points/W
310 points/W
Test#1 (Memory)
103 points/W
263 points/W
TOTAL
3077 points/W
2988 points/W

Performance/GHz
i7-7700K
i5-5675R
Test#1 (Integers)
6862 points/GHz
6087 points/GHz
Test#2 (FP)
6059 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1426 points/GHz
1445 points/GHz
Test#1 (Memory)
3114 points/GHz
1590 points/GHz
TOTAL
17460 points/GHz
14286 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. 3.7.9