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Core i7-10870H vs i9-9900K


Description
The i7-10870H is based on Comet Lake architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i7-10870H gets a score of 487 k points while the i9-9900K gets 545.3 k points.

Summarizing, the i9-9900K is 1.1 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
906ec
Core
Comet Lake-H
Coffee Lake-S
Architecture
Base frecuency
2.2 GHz
3.6 GHz
Boost frecuency
5 GHz
5 GHz
Socket
FC-BGA 1440
LGA 1151
Cores/Threads
8/16
8/16
TDP
45 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
16384 kB
16384 kB
Date
September 2020
October 2018

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
i7-10870H
i9-9900K
Test#1 (Integers)
4766
5171 (8.51%)
Test#2 (FP)
19806
21152 (6.79%)
Test#3 (Generic, ZIP)
6292
7009 (11.39%)
Test#1 (Memory)
14034
15324 (9.19%)
TOTAL
44898
48655 (8.37%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
31208
38451 (23.21%)
Test#2 (FP)
151010
155679 (3.09%)
Test#3 (Generic, ZIP)
50126
50999 (1.74%)
Test#1 (Memory)
8366
18255 (118.22%)
TOTAL
240709
263385 (9.42%)

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
i9-9900K
Test#1 (Integers)
30376
33619 (10.67%)
Test#2 (FP)
27947
30015 (7.40%)
Test#3 (Generic, ZIP)
6510
7168 (10.11%)
Test#1 (Memory)
14366
15434 (7.43%)
TOTAL
79200
86236 (8.88%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
216184
248933 (15.15%)
Test#2 (FP)
210824
224434 (6.46%)
Test#3 (Generic, ZIP)
51574
53389 (3.52%)
Test#1 (Memory)
8465
18540 (119.01%)
TOTAL
487048
545296 (11.96%)

Performance/W
i7-10870H
i9-9900K
Test#1 (Integers)
4804 points/W
2620 points/W
Test#2 (FP)
4685 points/W
2362 points/W
Test#3 (Generic, ZIP)
1146 points/W
562 points/W
Test#1 (Memory)
188 points/W
195 points/W
TOTAL
10823 points/W
5740 points/W

Performance/GHz
i7-10870H
i9-9900K
Test#1 (Integers)
6075 points/GHz
6724 points/GHz
Test#2 (FP)
5589 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
1434 points/GHz
Test#1 (Memory)
2873 points/GHz
3087 points/GHz
TOTAL
15840 points/GHz
17247 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. 3.7.9