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Core i9-10900K vs i5-10400


Description
Both models i9-10900K and i5-10400 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 i5-10400 gets 372.2 k points.

Summarizing, the i9-10900K is 1.8 times faster than the i5-10400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
a0655
Core
Comet Lake-S
Comet Lake-S
Architecture
Base frecuency
3.7 GHz
2.9 GHz
Boost frecuency
5.2 GHz
4.3 GHz
Socket
LGA 1200
LGA 1200
Cores/Threads
10/20
6/12
TDP
125 W
65 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 2020
Mean monothread perf.
80.41k points
68.04k points
Mean multithread perf.
685.65k points
372.19k points

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
i5-10400
Test#1 (Integers)
32.67k
26.43k (x0.81)
Test#2 (FP)
28.49k
23.89k (x0.84)
Test#3 (Generic, ZIP)
6.53k
5.63k (x0.86)
Test#1 (Memory)
12.72k
12.1k (x0.95)
TOTAL
80.41k
68.04k (x0.85)

Multithread

i9-10900K

i5-10400
Test#1 (Integers)
307.39k
163.14k (x0.53)
Test#2 (FP)
298.47k
161.5k (x0.54)
Test#3 (Generic, ZIP)
72.94k
39.94k (x0.55)
Test#1 (Memory)
6.85k
7.6k (x1.11)
TOTAL
685.65k
372.19k (x0.54)

Performance/W
i9-10900K
i5-10400
Test#1 (Integers)
2459 points/W
2510 points/W
Test#2 (FP)
2388 points/W
2485 points/W
Test#3 (Generic, ZIP)
583 points/W
615 points/W
Test#1 (Memory)
55 points/W
117 points/W
TOTAL
5485 points/W
5726 points/W

Performance/GHz
i9-10900K
i5-10400
Test#1 (Integers)
6282 points/GHz
6146 points/GHz
Test#2 (FP)
5479 points/GHz
5555 points/GHz
Test#3 (Generic, ZIP)
1257 points/GHz
1309 points/GHz
Test#1 (Memory)
2445 points/GHz
2814 points/GHz
TOTAL
15463 points/GHz
15824 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