| | | | | | |

Core i5-5675R vs i7-8700k


Description
The i5-5675R is based on Broadwell architecture while the i7-8700k is based on Coffee Lake.

Using the multithread performance as a reference, the i5-5675R gets a score of 194.2 k points while the i7-8700k gets 443.8 k points.

Summarizing, the i7-8700k is 2.3 times faster than the i5-5675R. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
40671
906ea
Core
Bradwell-H
Coffee Lake-S
Architecture
Base frecuency
3.1 GHz
3.7 GHz
Boost frecuency
3.6 GHz
4.7 GHz
Socket
BGA1364
LGA 1151
Cores/Threads
4/4
6/12
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
4096 kB
12288 kB
Date
June 2015
October 2017
Mean monothread perf.
51.43k points
80.6k points
Mean multithread perf.
194.2k points
443.77k 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
i5-5675R
i7-8700k
Test#1 (Integers)
4.14k
4.13k (x1)
Test#2 (FP)
14.35k
16.96k (x1.18)
Test#3 (Generic, ZIP)
4.94k
5.56k (x1.13)
Test#1 (Memory)
5.47k
12.85k (x2.35)
TOTAL
28.91k
39.5k (x1.37)

Multithread

i5-5675R

i7-8700k
Test#1 (Integers)
16.02k
24.01k (x1.5)
Test#2 (FP)
54.6k
108.69k (x1.99)
Test#3 (Generic, ZIP)
18.69k
36.62k (x1.96)
Test#1 (Memory)
16.87k
9.33k (x0.55)
TOTAL
106.18k
178.64k (x1.68)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i5-5675R
i7-8700k
Test#1 (Integers)
12.86k
12.92k (x1.01)
Test#2 (FP)
16.85k
20.68k (x1.23)
Test#3 (Generic, ZIP)
5.19k
5.3k (x1.02)
Test#1 (Memory)
5.49k
12.59k (x2.29)
TOTAL
40.39k
51.48k (x1.27)

Multithread

i5-5675R

i7-8700k
Test#1 (Integers)
50.07k
94.26k (x1.88)
Test#2 (FP)
64.61k
152.55k (x2.36)
Test#3 (Generic, ZIP)
19.84k
39.74k (x2)
Test#1 (Memory)
17.09k
8.53k (x0.5)
TOTAL
151.6k
295.07k (x1.95)

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
i5-5675R
i7-8700k
Test#1 (Integers)
12.88k
16.87k (x1.31)
Test#2 (FP)
18.27k
26.12k (x1.43)
Test#3 (Generic, ZIP)
5.12k
6.33k (x1.24)
Test#1 (Memory)
5.45k
13.71k (x2.52)
TOTAL
41.72k
63.03k (x1.51)

Multithread

i5-5675R

i7-8700k
Test#1 (Integers)
49.91k
105.74k (x2.12)
Test#2 (FP)
70.3k
180.52k (x2.57)
Test#3 (Generic, ZIP)
19.69k
44.99k (x2.29)
Test#1 (Memory)
16.92k
8.51k (x0.5)
TOTAL
156.83k
339.77k (x2.17)

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
i5-5675R
i7-8700k
Test#1 (Integers)
21.91k
31.2k (x1.42)
Test#2 (FP)
18.59k
27.82k (x1.5)
Test#3 (Generic, ZIP)
5.2k
6.57k (x1.26)
Test#1 (Memory)
5.72k
15k (x2.62)
TOTAL
51.43k
80.6k (x1.57)

Multithread

i5-5675R

i7-8700k
Test#1 (Integers)
84.92k
202.42k (x2.38)
Test#2 (FP)
72.09k
186.33k (x2.58)
Test#3 (Generic, ZIP)
20.13k
44.96k (x2.23)
Test#1 (Memory)
17.07k
10.05k (x0.59)
TOTAL
194.2k
443.77k (x2.29)

Performance/W
i5-5675R
i7-8700k
Test#1 (Integers)
1306 points/W
2131 points/W
Test#2 (FP)
1109 points/W
1961 points/W
Test#3 (Generic, ZIP)
310 points/W
473 points/W
Test#1 (Memory)
263 points/W
106 points/W
TOTAL
2988 points/W
4671 points/W

Performance/GHz
i5-5675R
i7-8700k
Test#1 (Integers)
6087 points/GHz
6639 points/GHz
Test#2 (FP)
5164 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1445 points/GHz
1397 points/GHz
Test#1 (Memory)
1590 points/GHz
3192 points/GHz
TOTAL
14286 points/GHz
17148 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