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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 529.3 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
906ed
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
4996 (4.84%)
Test#2 (FP)
19806
20217 (2.07%)
Test#3 (Generic, ZIP)
6292
6545 (4.01%)
Test#1 (Memory)
14034
13775 (-1.84%)
TOTAL
44898
45532 (1.41%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
31208
36390 (16.61%)
Test#2 (FP)
151010
166549 (10.29%)
Test#3 (Generic, ZIP)
50126
54922 (9.57%)
Test#1 (Memory)
8366
8963 (7.14%)
TOTAL
240709
266824 (10.85%)

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
i9-9900K
Test#1 (Integers)
17174
18030 (4.99%)
Test#2 (FP)
25260
25978 (2.84%)
Test#3 (Generic, ZIP)
6704
6859 (2.31%)
Test#1 (Memory)
13813
14502 (4.98%)
TOTAL
62952
65369 (3.84%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
116682
131344 (12.57%)
Test#2 (FP)
187278
204758 (9.33%)
Test#3 (Generic, ZIP)
51518
55741 (8.20%)
Test#1 (Memory)
8390
8989 (7.13%)
TOTAL
363869
400832 (10.16%)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-10870H
i9-9900K
Test#1 (Integers)
16136
17979 (11.43%)
Test#2 (FP)
24736
27039 (9.31%)
Test#3 (Generic, ZIP)
5984
6627 (10.75%)
Test#1 (Memory)
12696
13600 (7.12%)
TOTAL
59551
65245 (9.56%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
117028
130881 (11.84%)
Test#2 (FP)
199876
208498 (4.31%)
Test#3 (Generic, ZIP)
50641
54122 (6.87%)
Test#1 (Memory)
8229
8905 (8.22%)
TOTAL
375774
402406 (7.09%)

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
32085 (5.62%)
Test#2 (FP)
27947
28170 (0.80%)
Test#3 (Generic, ZIP)
6510
6675 (2.54%)
Test#1 (Memory)
14366
14978 (4.25%)
TOTAL
79200
81908 (3.42%)

Multithread

i7-10870H

i9-9900K
Test#1 (Integers)
216184
242980 (12.39%)
Test#2 (FP)
210824
220157 (4.43%)
Test#3 (Generic, ZIP)
51574
53966 (4.64%)
Test#1 (Memory)
8465
12218 (44.33%)
TOTAL
487048
529320 (8.68%)

Performance/W
i7-10870H
i9-9900K
Test#1 (Integers)
4804 points/W
2558 points/W
Test#2 (FP)
4685 points/W
2317 points/W
Test#3 (Generic, ZIP)
1146 points/W
568 points/W
Test#1 (Memory)
188 points/W
129 points/W
TOTAL
10823 points/W
5572 points/W

Performance/GHz
i7-10870H
i9-9900K
Test#1 (Integers)
6075 points/GHz
6417 points/GHz
Test#2 (FP)
5589 points/GHz
5634 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
1335 points/GHz
Test#1 (Memory)
2873 points/GHz
2996 points/GHz
TOTAL
15840 points/GHz
16382 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