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Core i9-10900K vs i7-9750H


Description
The i9-10900K is based on Comet Lake architecture while the i7-9750H is based on Coffee Lake.

Using the multithread performance as a reference, the i9-10900K gets a score of 685.6 k points while the i7-9750H gets 276.5 k points.

Summarizing, the i9-10900K is 2.5 times faster than the i7-9750H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
906ed
Core
Comet Lake-S
Coffee Lake-H
Architecture
Base frecuency
3.7 GHz
2.6 GHz
Boost frecuency
5.2 GHz
4.5 GHz
Socket
LGA 1200
BGA 1440
Cores/Threads
10/20
6/12
TDP
125 W
45 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
April 2019
Mean monothread perf.
80.41k points
62.92k points
Mean multithread perf.
685.65k points
276.46k 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
i7-9750H
Test#1 (Integers)
19.5k
16.32k (x0.84)
Test#2 (FP)
28.01k
23.42k (x0.84)
Test#3 (Generic, ZIP)
7.45k
6.04k (x0.81)
Test#1 (Memory)
15.82k
13.24k (x0.84)
TOTAL
70.79k
59.03k (x0.83)

Multithread

i9-10900K

i7-9750H
Test#1 (Integers)
194.49k
86.92k (x0.45)
Test#2 (FP)
312.59k
126.14k (x0.4)
Test#3 (Generic, ZIP)
89.14k
29.62k (x0.33)
Test#1 (Memory)
12.58k
11.86k (x0.94)
TOTAL
608.81k
254.54k (x0.42)

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
i9-10900K
i7-9750H
Test#1 (Integers)
32.67k
25.22k (x0.77)
Test#2 (FP)
28.49k
21.97k (x0.77)
Test#3 (Generic, ZIP)
6.53k
5.02k (x0.77)
Test#1 (Memory)
12.72k
10.71k (x0.84)
TOTAL
80.41k
62.92k (x0.78)

Multithread

i9-10900K

i7-9750H
Test#1 (Integers)
307.39k
125.56k (x0.41)
Test#2 (FP)
298.47k
115.86k (x0.39)
Test#3 (Generic, ZIP)
72.94k
25.63k (x0.35)
Test#1 (Memory)
6.85k
9.4k (x1.37)
TOTAL
685.65k
276.46k (x0.4)

Performance/W
i9-10900K
i7-9750H
Test#1 (Integers)
2459 points/W
2790 points/W
Test#2 (FP)
2388 points/W
2575 points/W
Test#3 (Generic, ZIP)
583 points/W
570 points/W
Test#1 (Memory)
55 points/W
209 points/W
TOTAL
5485 points/W
6144 points/W

Performance/GHz
i9-10900K
i7-9750H
Test#1 (Integers)
6282 points/GHz
5605 points/GHz
Test#2 (FP)
5479 points/GHz
4882 points/GHz
Test#3 (Generic, ZIP)
1257 points/GHz
1115 points/GHz
Test#1 (Memory)
2445 points/GHz
2380 points/GHz
TOTAL
15463 points/GHz
13982 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