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Core i9-10940X vs i9-10900KF


Description
The i9-10940X is based on Cascade Lake architecture while the i9-10900KF is based on Comet Lake.

Using the multithread performance as a reference, the i9-10940X gets a score of 1088.1 k points while the i9-10900KF gets 825.5 k points.

Summarizing, the i9-10940X is 1.3 times faster than the i9-10900KF. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50657
a0655
Core
Cascade Lake-X
Comet Lake-S
Architecture
Base frecuency
3.3 GHz
3.7 GHz
Boost frecuency
4.8 GHz
5.2 GHz
Socket
LGA 2066
LGA 1200
Cores/Threads
14/28
10/20
TDP
165 W
125 W
Cache L1 (d+i)
14x32+14x32 kB
10x32+10x32 kB
Cache L2
14x1024 kB
10x256 kB
Cache L3
19712 kB
20480 kB
Date
November 2019
April 2020
Mean monothread perf.
72.04k points
90.37k points
Mean multithread perf.
1088.11k points
825.47k 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
i9-10940X
i9-10900KF
Test#1 (Integers)
29.75k
35.87k (x1.21)
Test#2 (FP)
27.44k
31.43k (x1.15)
Test#3 (Generic, ZIP)
5.81k
7.34k (x1.26)
Test#1 (Memory)
9.05k
15.73k (x1.74)
TOTAL
72.04k
90.37k (x1.25)

Multithread

i9-10940X

i9-10900KF
Test#1 (Integers)
485.37k
377.56k (x0.78)
Test#2 (FP)
472.7k
347.59k (x0.74)
Test#3 (Generic, ZIP)
113.09k
88.08k (x0.78)
Test#1 (Memory)
16.95k
12.24k (x0.72)
TOTAL
1088.11k
825.47k (x0.76)

Performance/W
i9-10940X
i9-10900KF
Test#1 (Integers)
2942 points/W
3020 points/W
Test#2 (FP)
2865 points/W
2781 points/W
Test#3 (Generic, ZIP)
685 points/W
705 points/W
Test#1 (Memory)
103 points/W
98 points/W
TOTAL
6595 points/W
6604 points/W

Performance/GHz
i9-10940X
i9-10900KF
Test#1 (Integers)
6197 points/GHz
6898 points/GHz
Test#2 (FP)
5717 points/GHz
6044 points/GHz
Test#3 (Generic, ZIP)
1210 points/GHz
1411 points/GHz
Test#1 (Memory)
1885 points/GHz
3025 points/GHz
TOTAL
15009 points/GHz
17378 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