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Core i9-10940X vs i9-9900K


Description
The i9-10940X is based on Cascade Lake architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i9-10940X gets a score of 1088.1 k points while the i9-9900K gets 545.3 k points.

Summarizing, the i9-10940X is 2 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50657
906ec
Core
Cascade Lake-X
Coffee Lake-S
Architecture
Base frecuency
3.3 GHz
3.6 GHz
Boost frecuency
4.8 GHz
5 GHz
Socket
LGA 2066
LGA 1151
Cores/Threads
14/28
8/16
TDP
165 W
95 W
Cache L1 (d+i)
14x32+14x32 kB
8x32+8x32 kB
Cache L2
14x1024 kB
8x256 kB
Cache L3
19712 kB
16384 kB
Date
November 2019
October 2018
Mean monothread perf.
72.04k points
86.24k points
Mean multithread perf.
1088.11k points
545.3k 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
i9-9900K
Test#1 (Integers)
29.75k
33.62k (x1.13)
Test#2 (FP)
27.44k
30.02k (x1.09)
Test#3 (Generic, ZIP)
5.81k
7.17k (x1.23)
Test#1 (Memory)
9.05k
15.43k (x1.71)
TOTAL
72.04k
86.24k (x1.2)

Multithread

i9-10940X

i9-9900K
Test#1 (Integers)
485.37k
248.93k (x0.51)
Test#2 (FP)
472.7k
224.43k (x0.47)
Test#3 (Generic, ZIP)
113.09k
53.39k (x0.47)
Test#1 (Memory)
16.95k
18.54k (x1.09)
TOTAL
1088.11k
545.3k (x0.5)

Performance/W
i9-10940X
i9-9900K
Test#1 (Integers)
2942 points/W
2620 points/W
Test#2 (FP)
2865 points/W
2362 points/W
Test#3 (Generic, ZIP)
685 points/W
562 points/W
Test#1 (Memory)
103 points/W
195 points/W
TOTAL
6595 points/W
5740 points/W

Performance/GHz
i9-10940X
i9-9900K
Test#1 (Integers)
6197 points/GHz
6724 points/GHz
Test#2 (FP)
5717 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
1210 points/GHz
1434 points/GHz
Test#1 (Memory)
1885 points/GHz
3087 points/GHz
TOTAL
15009 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. 3.11.4