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Core i7-8700k vs i7-7700HQ


Description
The i7-8700k is based on Coffee Lake architecture while the i7-7700HQ is based on Kaby Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-7700HQ gets 208.7 k points.

Summarizing, the i7-8700k is 2.1 times faster than the i7-7700HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906e9
Core
Coffee Lake-S
Kaby Lake-H
Architecture
Base frecuency
3.7 GHz
2.8 GHz
Boost frecuency
4.7 GHz
3.8 GHz
Socket
LGA 1151
BGA1440
Cores/Threads
6/12
4/8
TDP
95 W
45 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
12288 kB
6144 kB
Date
October 2017
January 2017

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
i7-8700k
i7-7700HQ
Test#1 (Integers)
4127
3822 (-7.38%)
Test#2 (FP)
16959
15557 (-8.27%)
Test#3 (Generic, ZIP)
5564
4934 (-11.32%)
Test#1 (Memory)
12845
8277 (-35.57%)
TOTAL
39495
32590 (-17.48%)

Multithread

i7-8700k

i7-7700HQ
Test#1 (Integers)
24011
14076 (-41.38%)
Test#2 (FP)
108690
65905 (-39.36%)
Test#3 (Generic, ZIP)
36616
22288 (-39.13%)
Test#1 (Memory)
9327
3609 (-61.30%)
TOTAL
178644
105879 (-40.73%)

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
i7-8700k
i7-7700HQ
Test#1 (Integers)
12920
13789 (6.73%)
Test#2 (FP)
20678
19854 (-3.98%)
Test#3 (Generic, ZIP)
5295
5171 (-2.35%)
Test#1 (Memory)
12587
8418 (-33.12%)
TOTAL
51480
47232 (-8.25%)

Multithread

i7-8700k

i7-7700HQ
Test#1 (Integers)
94259
52392 (-44.42%)
Test#2 (FP)
152549
86736 (-43.14%)
Test#3 (Generic, ZIP)
39735
22866 (-42.45%)
Test#1 (Memory)
8527
3860 (-54.74%)
TOTAL
295071
165854 (-43.79%)

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
i7-8700k
i7-7700HQ
Test#1 (Integers)
16874
12598 (-25.34%)
Test#2 (FP)
26119
20142 (-22.88%)
Test#3 (Generic, ZIP)
6329
4607 (-27.21%)
Test#1 (Memory)
13708
5788 (-57.77%)
TOTAL
63030
43135 (-31.56%)

Multithread

i7-8700k

i7-7700HQ
Test#1 (Integers)
105740
52641 (-50.22%)
Test#2 (FP)
180520
89667 (-50.33%)
Test#3 (Generic, ZIP)
44994
22538 (-49.91%)
Test#1 (Memory)
8512
2968 (-65.13%)
TOTAL
339766
167814 (-50.61%)

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
i7-8700k
i7-7700HQ
Test#1 (Integers)
31204
23377 (-25.08%)
Test#2 (FP)
27821
21050 (-24.34%)
Test#3 (Generic, ZIP)
6568
4793 (-27.02%)
Test#1 (Memory)
15004
6988 (-53.43%)
TOTAL
80598
56209 (-30.26%)

Multithread

i7-8700k

i7-7700HQ
Test#1 (Integers)
202422
94780 (-53.18%)
Test#2 (FP)
186332
88729 (-52.38%)
Test#3 (Generic, ZIP)
44958
21687 (-51.76%)
Test#1 (Memory)
10054
3488 (-65.31%)
TOTAL
443765
208684 (-52.97%)

Performance/W
i7-8700k
i7-7700HQ
Test#1 (Integers)
2131 points/W
2106 points/W
Test#2 (FP)
1961 points/W
1972 points/W
Test#3 (Generic, ZIP)
473 points/W
482 points/W
Test#1 (Memory)
106 points/W
78 points/W
TOTAL
4671 points/W
4637 points/W

Performance/GHz
i7-8700k
i7-7700HQ
Test#1 (Integers)
6639 points/GHz
6152 points/GHz
Test#2 (FP)
5919 points/GHz
5540 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1261 points/GHz
Test#1 (Memory)
3192 points/GHz
1839 points/GHz
TOTAL
17148 points/GHz
14792 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