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Core i9-10900KF vs i7-8700k


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

Using the multithread performance as a reference, the i9-10900KF gets a score of 825.5 k points while the i7-8700k gets 443.8 k points.

Summarizing, the i9-10900KF is 1.9 times faster than the i7-8700k. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
906ea
Core
Comet Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
3.7 GHz
Boost frecuency
5.2 GHz
4.7 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
10/20
6/12
TDP
125 W
95 W
Cache L1 (d+i)
10x32+10x32 kB
6x32+6x32 kB
Cache L2
10x256 kB
6x256 kB
Cache L3
20480 kB
12288 kB
Date
April 2020
October 2017
Mean monothread perf.
90.37k points
80.6k points
Mean multithread perf.
825.47k points
443.77k points

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
i9-10900KF
i7-8700k
Test#1 (Integers)
35.87k
31.2k (x0.87)
Test#2 (FP)
31.43k
27.82k (x0.89)
Test#3 (Generic, ZIP)
7.34k
6.57k (x0.9)
Test#1 (Memory)
15.73k
15k (x0.95)
TOTAL
90.37k
80.6k (x0.89)

Multithread

i9-10900KF

i7-8700k
Test#1 (Integers)
377.56k
202.42k (x0.54)
Test#2 (FP)
347.59k
186.33k (x0.54)
Test#3 (Generic, ZIP)
88.08k
44.96k (x0.51)
Test#1 (Memory)
12.24k
10.05k (x0.82)
TOTAL
825.47k
443.77k (x0.54)

Performance/W
i9-10900KF
i7-8700k
Test#1 (Integers)
3020 points/W
2131 points/W
Test#2 (FP)
2781 points/W
1961 points/W
Test#3 (Generic, ZIP)
705 points/W
473 points/W
Test#1 (Memory)
98 points/W
106 points/W
TOTAL
6604 points/W
4671 points/W

Performance/GHz
i9-10900KF
i7-8700k
Test#1 (Integers)
6898 points/GHz
6639 points/GHz
Test#2 (FP)
6044 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1411 points/GHz
1397 points/GHz
Test#1 (Memory)
3025 points/GHz
3192 points/GHz
TOTAL
17378 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