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Core i7-8700k vs i5-12400F


Description
The i7-8700k is based on Coffee Lake architecture while the i5-12400F 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 i5-12400F gets 399.4 k points.

Summarizing, the i7-8700k is 1.1 times faster than the i5-12400F. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
90675
Core
Coffee Lake-S
Alder Lake-S
Architecture
Base frecuency
3.7 GHz
2.5 GHz
Boost frecuency
4.7 GHz
4.4 GHz
Socket
LGA 1151
LGA 1700
Cores/Threads
6/12
6/12
TDP
95 W
117 W
Cache L1 (d+i)
6x32+6x32 kB
6x32/0x64+6x48/0x32 kB
Cache L2
6x256 kB
6x1280+0x2048 kB
Cache L3
12288 kB
18432 kB
Date
October 2017
January 2022
Mean monothread perf.
80.6k points
76.46k points
Mean multithread perf.
443.77k points
399.39k 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
i5-12400F
Test#1 (Integers)
4.13k
7.43k (x1.8)
Test#2 (FP)
16.96k
18.64k (x1.1)
Test#3 (Generic, ZIP)
5.56k
13.15k (x2.36)
Test#1 (Memory)
12.85k
14.82k (x1.15)
TOTAL
39.5k
54.04k (x1.37)

Multithread

i7-8700k

i5-12400F
Test#1 (Integers)
24.01k
36.23k (x1.51)
Test#2 (FP)
108.69k
134.76k (x1.24)
Test#3 (Generic, ZIP)
36.62k
84.06k (x2.3)
Test#1 (Memory)
9.33k
16.71k (x1.79)
TOTAL
178.64k
271.76k (x1.52)

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
i5-12400F
Test#1 (Integers)
12.92k
24.18k (x1.87)
Test#2 (FP)
20.68k
23.85k (x1.15)
Test#3 (Generic, ZIP)
5.3k
14.42k (x2.72)
Test#1 (Memory)
12.59k
14.87k (x1.18)
TOTAL
51.48k
77.32k (x1.5)

Multithread

i7-8700k

i5-12400F
Test#1 (Integers)
94.26k
122.98k (x1.3)
Test#2 (FP)
152.55k
168.77k (x1.11)
Test#3 (Generic, ZIP)
39.74k
96.11k (x2.42)
Test#1 (Memory)
8.53k
16.32k (x1.91)
TOTAL
295.07k
404.19k (x1.37)

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
i5-12400F
Test#1 (Integers)
16.87k
24.24k (x1.44)
Test#2 (FP)
26.12k
24.74k (x0.95)
Test#3 (Generic, ZIP)
6.33k
13.95k (x2.2)
Test#1 (Memory)
13.71k
14.47k (x1.06)
TOTAL
63.03k
77.41k (x1.23)

Multithread

i7-8700k

i5-12400F
Test#1 (Integers)
105.74k
126.87k (x1.2)
Test#2 (FP)
180.52k
186.48k (x1.03)
Test#3 (Generic, ZIP)
44.99k
92.37k (x2.05)
Test#1 (Memory)
8.51k
15.45k (x1.82)
TOTAL
339.77k
421.18k (x1.24)

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
i5-12400F
Test#1 (Integers)
31.2k
33.85k (x1.08)
Test#2 (FP)
27.82k
20.33k (x0.73)
Test#3 (Generic, ZIP)
6.57k
10.51k (x1.6)
Test#1 (Memory)
15k
11.77k (x0.78)
TOTAL
80.6k
76.46k (x0.95)

Multithread

i7-8700k

i5-12400F
Test#1 (Integers)
202.42k
174.21k (x0.86)
Test#2 (FP)
186.33k
141.31k (x0.76)
Test#3 (Generic, ZIP)
44.96k
64.86k (x1.44)
Test#1 (Memory)
10.05k
19.01k (x1.89)
TOTAL
443.77k
399.39k (x0.9)

Performance/W
i7-8700k
i5-12400F
Test#1 (Integers)
2131 points/W
1489 points/W
Test#2 (FP)
1961 points/W
1208 points/W
Test#3 (Generic, ZIP)
473 points/W
554 points/W
Test#1 (Memory)
106 points/W
162 points/W
TOTAL
4671 points/W
3414 points/W

Performance/GHz
i7-8700k
i5-12400F
Test#1 (Integers)
6639 points/GHz
7693 points/GHz
Test#2 (FP)
5919 points/GHz
4621 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
2389 points/GHz
Test#1 (Memory)
3192 points/GHz
2675 points/GHz
TOTAL
17148 points/GHz
17378 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