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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 289.9 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
June 2015
Mean monothread perf.
76.98k points
51.43k points
Mean multithread perf.
289.9k points
194.2k points

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)
4.63k
4.14k (x0.89)
Test#2 (FP)
18.92k
14.35k (x0.76)
Test#3 (Generic, ZIP)
6.22k
4.94k (x0.79)
Test#1 (Memory)
13.92k
5.47k (x0.39)
TOTAL
43.7k
28.91k (x0.66)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
18.53k
16.02k (x0.86)
Test#2 (FP)
86.49k
54.6k (x0.63)
Test#3 (Generic, ZIP)
28.78k
18.69k (x0.65)
Test#1 (Memory)
9.67k
16.87k (x1.74)
TOTAL
143.47k
106.18k (x0.74)

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)
17.55k
12.88k (x0.73)
Test#2 (FP)
27.82k
18.27k (x0.66)
Test#3 (Generic, ZIP)
6.8k
5.12k (x0.75)
Test#1 (Memory)
14.83k
5.45k (x0.37)
TOTAL
67k
41.72k (x0.62)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
68.4k
49.91k (x0.73)
Test#2 (FP)
118.8k
70.3k (x0.59)
Test#3 (Generic, ZIP)
33.34k
19.69k (x0.59)
Test#1 (Memory)
17.43k
16.92k (x0.97)
TOTAL
237.97k
156.83k (x0.66)

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)
30.47k
21.91k (x0.72)
Test#2 (FP)
26.94k
18.59k (x0.69)
Test#3 (Generic, ZIP)
6.25k
5.2k (x0.83)
Test#1 (Memory)
13.32k
5.72k (x0.43)
TOTAL
76.98k
51.43k (x0.67)

Multithread

i7-7700K

i5-5675R
Test#1 (Integers)
127.81k
84.92k (x0.66)
Test#2 (FP)
123.7k
72.09k (x0.58)
Test#3 (Generic, ZIP)
29.34k
20.13k (x0.69)
Test#1 (Memory)
9.05k
17.07k (x1.89)
TOTAL
289.9k
194.2k (x0.67)

Performance/W
i7-7700K
i5-5675R
Test#1 (Integers)
1345 points/W
1306 points/W
Test#2 (FP)
1302 points/W
1109 points/W
Test#3 (Generic, ZIP)
309 points/W
310 points/W
Test#1 (Memory)
95 points/W
263 points/W
TOTAL
3052 points/W
2988 points/W

Performance/GHz
i7-7700K
i5-5675R
Test#1 (Integers)
6770 points/GHz
6087 points/GHz
Test#2 (FP)
5987 points/GHz
5164 points/GHz
Test#3 (Generic, ZIP)
1389 points/GHz
1445 points/GHz
Test#1 (Memory)
2960 points/GHz
1590 points/GHz
TOTAL
17106 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. 3.11.4