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Core i9-10900K vs i7-10870H


Description
Both models i9-10900K and i7-10870H are based on Comet Lake architecture.

Comet Lake was released in 2019 as a 14nm process-refinement. These models were released as 10th generation CPUs like 10nm Ice Lake. There are model with 2 to 10 cores.

Using the multithread performance as a reference, the i9-10900K gets a score of 685.6 k points while the i7-10870H gets 487 k points.

Summarizing, the i9-10900K is 1.4 times faster than the i7-10870H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
a0652
Core
Comet Lake-S
Comet Lake-H
Architecture
Base frecuency
3.7 GHz
2.2 GHz
Boost frecuency
5.2 GHz
5 GHz
Socket
LGA 1200
FC-BGA 1440
Cores/Threads
10/20
8/16
TDP
125 W
45 W
Cache L1 (d+i)
10x32+10x32 kB
8x32+8x32 kB
Cache L2
10x256 kB
8x256 kB
Cache L3
20480 kB
16384 kB
Date
April 2020
September 2020
Mean monothread perf.
80.41k points
79.2k points
Mean multithread perf.
685.65k points
487.05k 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
i9-10900K
i7-10870H
Test#1 (Integers)
19.5k
17.17k (x0.88)
Test#2 (FP)
28.01k
25.26k (x0.9)
Test#3 (Generic, ZIP)
7.45k
6.7k (x0.9)
Test#1 (Memory)
15.82k
13.81k (x0.87)
TOTAL
70.79k
62.95k (x0.89)

Multithread

i9-10900K

i7-10870H
Test#1 (Integers)
194.49k
116.68k (x0.6)
Test#2 (FP)
312.59k
187.28k (x0.6)
Test#3 (Generic, ZIP)
89.14k
51.52k (x0.58)
Test#1 (Memory)
12.58k
8.39k (x0.67)
TOTAL
608.81k
363.87k (x0.6)

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
i9-10900K
i7-10870H
Test#1 (Integers)
32.67k
30.38k (x0.93)
Test#2 (FP)
28.49k
27.95k (x0.98)
Test#3 (Generic, ZIP)
6.53k
6.51k (x1)
Test#1 (Memory)
12.72k
14.37k (x1.13)
TOTAL
80.41k
79.2k (x0.99)

Multithread

i9-10900K

i7-10870H
Test#1 (Integers)
307.39k
216.18k (x0.7)
Test#2 (FP)
298.47k
210.82k (x0.71)
Test#3 (Generic, ZIP)
72.94k
51.57k (x0.71)
Test#1 (Memory)
6.85k
8.47k (x1.24)
TOTAL
685.65k
487.05k (x0.71)

Performance/W
i9-10900K
i7-10870H
Test#1 (Integers)
2459 points/W
4804 points/W
Test#2 (FP)
2388 points/W
4685 points/W
Test#3 (Generic, ZIP)
583 points/W
1146 points/W
Test#1 (Memory)
55 points/W
188 points/W
TOTAL
5485 points/W
10823 points/W

Performance/GHz
i9-10900K
i7-10870H
Test#1 (Integers)
6282 points/GHz
6075 points/GHz
Test#2 (FP)
5479 points/GHz
5589 points/GHz
Test#3 (Generic, ZIP)
1257 points/GHz
1302 points/GHz
Test#1 (Memory)
2445 points/GHz
2873 points/GHz
TOTAL
15463 points/GHz
15840 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