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Core i7-10870H vs i9-10900K


Description
Both models i7-10870H and i9-10900K 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 i7-10870H gets a score of 487 k points while the i9-10900K gets 685.6 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
a0652
a0655
Core
Comet Lake-H
Comet Lake-S
Architecture
Base frecuency
2.2 GHz
3.7 GHz
Boost frecuency
5 GHz
5.2 GHz
Socket
FC-BGA 1440
LGA 1200
Cores/Threads
8/16
10/20
TDP
45 W
125 W
Cache L1 (d+i)
8x32+8x32 kB
10x32+10x32 kB
Cache L2
8x256 kB
10x256 kB
Cache L3
16384 kB
20480 kB
Date
September 2020
April 2020
Mean monothread perf.
79.2k points
80.41k points
Mean multithread perf.
487.05k points
685.65k 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
i7-10870H
i9-10900K
Test#1 (Integers)
17.17k
19.5k (x1.14)
Test#2 (FP)
25.26k
28.01k (x1.11)
Test#3 (Generic, ZIP)
6.7k
7.45k (x1.11)
Test#1 (Memory)
13.81k
15.82k (x1.15)
TOTAL
62.95k
70.79k (x1.12)

Multithread

i7-10870H

i9-10900K
Test#1 (Integers)
116.68k
194.49k (x1.67)
Test#2 (FP)
187.28k
312.59k (x1.67)
Test#3 (Generic, ZIP)
51.52k
89.14k (x1.73)
Test#1 (Memory)
8.39k
12.58k (x1.5)
TOTAL
363.87k
608.81k (x1.67)

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
i7-10870H
i9-10900K
Test#1 (Integers)
30.38k
32.67k (x1.08)
Test#2 (FP)
27.95k
28.49k (x1.02)
Test#3 (Generic, ZIP)
6.51k
6.53k (x1)
Test#1 (Memory)
14.37k
12.72k (x0.89)
TOTAL
79.2k
80.41k (x1.02)

Multithread

i7-10870H

i9-10900K
Test#1 (Integers)
216.18k
307.39k (x1.42)
Test#2 (FP)
210.82k
298.47k (x1.42)
Test#3 (Generic, ZIP)
51.57k
72.94k (x1.41)
Test#1 (Memory)
8.47k
6.85k (x0.81)
TOTAL
487.05k
685.65k (x1.41)

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

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