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Core i7-8700k vs i7-12700H


Description
The i7-8700k is based on Coffee Lake architecture while the i7-12700H is based on Alder Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-12700H gets 643.3 k points.

Summarizing, the i7-12700H is 1.4 times faster than the i7-8700k. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906a3
Core
Coffee Lake-S
Alder Lake-H
Architecture
Base frecuency
3.7 GHz
4.7 GHz
Boost frecuency
4.7 GHz
4.7 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
6/12
14/20
TDP
95 W
115 W
Cache L1 (d+i)
6x32+6x32 kB
6x32/8x64+6x48/8x32 kB
Cache L2
6x256 kB
6x1280+6x2048 kB
Cache L3
12288 kB
24576 kB
Date
October 2017
January 2022
Mean monothread perf.
80.6k points
93.12k points
Mean multithread perf.
443.77k points
643.29k 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
i7-8700k
i7-12700H
Test#1 (Integers)
4.13k
7.95k (x1.93)
Test#2 (FP)
16.96k
19.74k (x1.16)
Test#3 (Generic, ZIP)
5.56k
13.29k (x2.39)
Test#1 (Memory)
12.85k
14.97k (x1.17)
TOTAL
39.5k
55.95k (x1.42)

Multithread

i7-8700k

i7-12700H
Test#1 (Integers)
24.01k
53.64k (x2.23)
Test#2 (FP)
108.69k
171.15k (x1.57)
Test#3 (Generic, ZIP)
36.62k
94.92k (x2.59)
Test#1 (Memory)
9.33k
9.24k (x0.99)
TOTAL
178.64k
328.95k (x1.84)

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
i7-12700H
Test#1 (Integers)
12.92k
24.26k (x1.88)
Test#2 (FP)
20.68k
24.03k (x1.16)
Test#3 (Generic, ZIP)
5.3k
14.75k (x2.79)
Test#1 (Memory)
12.59k
12.08k (x0.96)
TOTAL
51.48k
75.12k (x1.46)

Multithread

i7-8700k

i7-12700H
Test#1 (Integers)
94.26k
199.99k (x2.12)
Test#2 (FP)
152.55k
218.01k (x1.43)
Test#3 (Generic, ZIP)
39.74k
102.62k (x2.58)
Test#1 (Memory)
8.53k
9.42k (x1.1)
TOTAL
295.07k
530.04k (x1.8)

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
i7-12700H
Test#1 (Integers)
16.87k
25.81k (x1.53)
Test#2 (FP)
26.12k
26.18k (x1)
Test#3 (Generic, ZIP)
6.33k
14.71k (x2.32)
Test#1 (Memory)
13.71k
13.88k (x1.01)
TOTAL
63.03k
80.58k (x1.28)

Multithread

i7-8700k

i7-12700H
Test#1 (Integers)
105.74k
203.61k (x1.93)
Test#2 (FP)
180.52k
249.64k (x1.38)
Test#3 (Generic, ZIP)
44.99k
101.32k (x2.25)
Test#1 (Memory)
8.51k
9.55k (x1.12)
TOTAL
339.77k
564.12k (x1.66)

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
i7-8700k
i7-12700H
Test#1 (Integers)
31.2k
41.64k (x1.33)
Test#2 (FP)
27.82k
25.48k (x0.92)
Test#3 (Generic, ZIP)
6.57k
13.2k (x2.01)
Test#1 (Memory)
15k
12.8k (x0.85)
TOTAL
80.6k
93.12k (x1.16)

Multithread

i7-8700k

i7-12700H
Test#1 (Integers)
202.42k
276.56k (x1.37)
Test#2 (FP)
186.33k
251.6k (x1.35)
Test#3 (Generic, ZIP)
44.96k
104.55k (x2.33)
Test#1 (Memory)
10.05k
10.58k (x1.05)
TOTAL
443.77k
643.29k (x1.45)

Performance/W
i7-8700k
i7-12700H
Test#1 (Integers)
2131 points/W
2405 points/W
Test#2 (FP)
1961 points/W
2188 points/W
Test#3 (Generic, ZIP)
473 points/W
909 points/W
Test#1 (Memory)
106 points/W
92 points/W
TOTAL
4671 points/W
5594 points/W

Performance/GHz
i7-8700k
i7-12700H
Test#1 (Integers)
6639 points/GHz
8859 points/GHz
Test#2 (FP)
5919 points/GHz
5422 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
2808 points/GHz
Test#1 (Memory)
3192 points/GHz
2724 points/GHz
TOTAL
17148 points/GHz
19813 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