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Core i7-7700K vs i7-8750H


Description
The i7-7700K is based on Kaby Lake architecture while the i7-8750H is based on Coffee Lake.

Using the multithread performance as a reference, the i7-7700K gets a score of 292.3 k points while the i7-8750H gets 219.1 k points.

Summarizing, the i7-7700K is 1.3 times faster than the i7-8750H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
906ea
Core
Kaby Lake-S
Coffee Lake-H
Architecture
Base frecuency
4.2 GHz
2.2 GHz
Boost frecuency
4.5 GHz
4.1 GHz
Socket
LGA 1151
BGA1440
Cores/Threads
4/8
6/12
TDP
95 W
45 W
Cache L1 (d+i)
32+32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
8192 kB
9216 kB
Date
September 2016
April 2018

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
i7-8750H
Test#1 (Integers)
17549
15137 (-13.74%)
Test#2 (FP)
27822
22803 (-18.04%)
Test#3 (Generic, ZIP)
6796
5503 (-19.03%)
Test#1 (Memory)
14832
10965 (-26.07%)
TOTAL
66999
54408 (-18.79%)

Multithread

i7-7700K

i7-8750H
Test#1 (Integers)
68395
82815 (21.08%)
Test#2 (FP)
118805
118584 (-0.19%)
Test#3 (Generic, ZIP)
33336
25084 (-24.76%)
Test#1 (Memory)
17434
4860 (-72.13%)
TOTAL
237970
231341 (-2.79%)

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
i7-8750H
Test#1 (Integers)
30879
23139 (-25.06%)
Test#2 (FP)
27266
19596 (-28.13%)
Test#3 (Generic, ZIP)
6416
4518 (-29.58%)
Test#1 (Memory)
14011
6608 (-52.84%)
TOTAL
78572
53861 (-31.45%)

Multithread

i7-7700K

i7-8750H
Test#1 (Integers)
130361
98273 (-24.61%)
Test#2 (FP)
122434
94900 (-22.49%)
Test#3 (Generic, ZIP)
29679
22418 (-24.47%)
Test#1 (Memory)
9830
3544 (-63.95%)
TOTAL
292304
219136 (-25.03%)

Performance/W
i7-7700K
i7-8750H
Test#1 (Integers)
1372 points/W
2184 points/W
Test#2 (FP)
1289 points/W
2109 points/W
Test#3 (Generic, ZIP)
312 points/W
498 points/W
Test#1 (Memory)
103 points/W
79 points/W
TOTAL
3077 points/W
4870 points/W

Performance/GHz
i7-7700K
i7-8750H
Test#1 (Integers)
6862 points/GHz
5644 points/GHz
Test#2 (FP)
6059 points/GHz
4779 points/GHz
Test#3 (Generic, ZIP)
1426 points/GHz
1102 points/GHz
Test#1 (Memory)
3114 points/GHz
1612 points/GHz
TOTAL
17460 points/GHz
13137 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