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Core i7-7700HQ vs i7-8700k


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

Using the multithread performance as a reference, the i7-7700HQ gets a score of 208.3 k points while the i7-8700k gets 443.8 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
906e9
906ea
Core
Kaby Lake-H
Coffee Lake-S
Architecture
Base frecuency
2.8 GHz
3.7 GHz
Boost frecuency
3.8 GHz
4.7 GHz
Socket
BGA1440
LGA 1151
Cores/Threads
4/8
6/12
TDP
45 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
6144 kB
12288 kB
Date
January 2017
October 2017
Mean monothread perf.
56.29k points
80.6k points
Mean multithread perf.
208.33k 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
i7-7700HQ
i7-8700k
Test#1 (Integers)
3.82k
4.13k (x1.08)
Test#2 (FP)
15.49k
16.96k (x1.1)
Test#3 (Generic, ZIP)
4.96k
5.56k (x1.12)
Test#1 (Memory)
8.82k
12.85k (x1.46)
TOTAL
33.09k
39.5k (x1.19)

Multithread

i7-7700HQ

i7-8700k
Test#1 (Integers)
14.15k
24.01k (x1.7)
Test#2 (FP)
65.81k
108.69k (x1.65)
Test#3 (Generic, ZIP)
22.41k
36.62k (x1.63)
Test#1 (Memory)
5.21k
9.33k (x1.79)
TOTAL
107.57k
178.64k (x1.66)

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
i7-7700HQ
i7-8700k
Test#1 (Integers)
13.75k
12.92k (x0.94)
Test#2 (FP)
19.69k
20.68k (x1.05)
Test#3 (Generic, ZIP)
5.19k
5.3k (x1.02)
Test#1 (Memory)
8.92k
12.59k (x1.41)
TOTAL
47.55k
51.48k (x1.08)

Multithread

i7-7700HQ

i7-8700k
Test#1 (Integers)
52.55k
94.26k (x1.79)
Test#2 (FP)
86.47k
152.55k (x1.76)
Test#3 (Generic, ZIP)
23.02k
39.74k (x1.73)
Test#1 (Memory)
5.4k
8.53k (x1.58)
TOTAL
167.43k
295.07k (x1.76)

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
i7-7700HQ
i7-8700k
Test#1 (Integers)
13k
16.87k (x1.3)
Test#2 (FP)
20.34k
26.12k (x1.28)
Test#3 (Generic, ZIP)
4.77k
6.33k (x1.33)
Test#1 (Memory)
6.95k
13.71k (x1.97)
TOTAL
45.05k
63.03k (x1.4)

Multithread

i7-7700HQ

i7-8700k
Test#1 (Integers)
52.7k
105.74k (x2.01)
Test#2 (FP)
89.69k
180.52k (x2.01)
Test#3 (Generic, ZIP)
22.49k
44.99k (x2)
Test#1 (Memory)
4.3k
8.51k (x1.98)
TOTAL
169.17k
339.77k (x2.01)

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
i7-7700HQ
i7-8700k
Test#1 (Integers)
23.27k
31.2k (x1.34)
Test#2 (FP)
20.35k
27.82k (x1.37)
Test#3 (Generic, ZIP)
4.76k
6.57k (x1.38)
Test#1 (Memory)
7.92k
15k (x1.9)
TOTAL
56.29k
80.6k (x1.43)

Multithread

i7-7700HQ

i7-8700k
Test#1 (Integers)
93.11k
202.42k (x2.17)
Test#2 (FP)
89.03k
186.33k (x2.09)
Test#3 (Generic, ZIP)
21.29k
44.96k (x2.11)
Test#1 (Memory)
4.9k
10.05k (x2.05)
TOTAL
208.33k
443.77k (x2.13)

Performance/W
i7-7700HQ
i7-8700k
Test#1 (Integers)
2069 points/W
2131 points/W
Test#2 (FP)
1978 points/W
1961 points/W
Test#3 (Generic, ZIP)
473 points/W
473 points/W
Test#1 (Memory)
109 points/W
106 points/W
TOTAL
4629 points/W
4671 points/W

Performance/GHz
i7-7700HQ
i7-8700k
Test#1 (Integers)
6124 points/GHz
6639 points/GHz
Test#2 (FP)
5354 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1251 points/GHz
1397 points/GHz
Test#1 (Memory)
2083 points/GHz
3192 points/GHz
TOTAL
14813 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