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Core i7-8700k vs i9-10900K


Description
The i7-8700k is based on Coffee Lake architecture while the i9-10900K is based on Comet Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i9-10900K gets 741.1 k points.

Summarizing, the i9-10900K is 1.7 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
a0655
Core
Coffee Lake-S
Comet Lake-S
Architecture
Base frecuency
3.7 GHz
3.7 GHz
Boost frecuency
4.7 GHz
5.2 GHz
Socket
LGA 1151
LGA 1200
Cores/Threads
6/12
10/20
TDP
95 W
125 W
Cache L1 (d+i)
6x32+6x32 kB
10x32+10x32 kB
Cache L2
6x256 kB
10x256 kB
Cache L3
12288 kB
20480 kB
Date
October 2017
April 2020
Mean monothread perf.
80.6k points
82.97k points
Mean multithread perf.
443.77k points
741.08k points

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
i9-10900K
Test#1 (Integers)
12.92k
19.5k (x1.51)
Test#2 (FP)
20.68k
28.01k (x1.35)
Test#3 (Generic, ZIP)
5.3k
7.45k (x1.41)
Test#1 (Memory)
12.59k
15.82k (x1.26)
TOTAL
51.48k
70.79k (x1.38)

Multithread

i7-8700k

i9-10900K
Test#1 (Integers)
94.26k
194.49k (x2.06)
Test#2 (FP)
152.55k
312.59k (x2.05)
Test#3 (Generic, ZIP)
39.74k
89.14k (x2.24)
Test#1 (Memory)
8.53k
12.58k (x1.48)
TOTAL
295.07k
608.81k (x2.06)

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
i9-10900K
Test#1 (Integers)
31.2k
33.23k (x1.07)
Test#2 (FP)
27.82k
29.09k (x1.05)
Test#3 (Generic, ZIP)
6.57k
6.68k (x1.02)
Test#1 (Memory)
15k
13.96k (x0.93)
TOTAL
80.6k
82.97k (x1.03)

Multithread

i7-8700k

i9-10900K
Test#1 (Integers)
202.42k
333.61k (x1.65)
Test#2 (FP)
186.33k
321.94k (x1.73)
Test#3 (Generic, ZIP)
44.96k
78.21k (x1.74)
Test#1 (Memory)
10.05k
7.32k (x0.73)
TOTAL
443.77k
741.08k (x1.67)

Performance/W
i7-8700k
i9-10900K
Test#1 (Integers)
2131 points/W
2669 points/W
Test#2 (FP)
1961 points/W
2576 points/W
Test#3 (Generic, ZIP)
473 points/W
626 points/W
Test#1 (Memory)
106 points/W
59 points/W
TOTAL
4671 points/W
5929 points/W

Performance/GHz
i7-8700k
i9-10900K
Test#1 (Integers)
6639 points/GHz
6391 points/GHz
Test#2 (FP)
5919 points/GHz
5595 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1285 points/GHz
Test#1 (Memory)
3192 points/GHz
2684 points/GHz
TOTAL
17148 points/GHz
15955 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