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Core i9-10940X vs i9-7980XE


Description
The i9-10940X is based on Cascade Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i9-10940X gets a score of 1088.1 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 1.1 times faster than the i9-10940X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50657
50654
Core
Cascade Lake-X
Skylake-X
Architecture
Base frecuency
3.3 GHz
2.6 GHz
Boost frecuency
4.8 GHz
4.4 GHz
Socket
LGA 2066
LGA 2066
Cores/Threads
14/28
18/36
TDP
165 W
165 W
Cache L1 (d+i)
14x32+14x32 kB
18x32+18x32 kB
Cache L2
14x1024 kB
18x1024 kB
Cache L3
19712 kB
25344 kB
Date
November 2019
May 2017
Mean monothread perf.
72.04k points
76.43k points
Mean multithread perf.
1088.11k points
1223.79k 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
i9-7980XE
Test#1 (Integers)
29.75k
31.16k (x1.05)
Test#2 (FP)
27.44k
28.13k (x1.02)
Test#3 (Generic, ZIP)
5.81k
6.65k (x1.14)
Test#1 (Memory)
9.05k
10.5k (x1.16)
TOTAL
72.04k
76.43k (x1.06)

Multithread

i9-10940X

i9-7980XE
Test#1 (Integers)
485.37k
560.19k (x1.15)
Test#2 (FP)
472.7k
516.97k (x1.09)
Test#3 (Generic, ZIP)
113.09k
123.94k (x1.1)
Test#1 (Memory)
16.95k
22.69k (x1.34)
TOTAL
1088.11k
1223.79k (x1.12)

Performance/W
i9-10940X
i9-7980XE
Test#1 (Integers)
2942 points/W
3395 points/W
Test#2 (FP)
2865 points/W
3133 points/W
Test#3 (Generic, ZIP)
685 points/W
751 points/W
Test#1 (Memory)
103 points/W
137 points/W
TOTAL
6595 points/W
7417 points/W

Performance/GHz
i9-10940X
i9-7980XE
Test#1 (Integers)
6197 points/GHz
7081 points/GHz
Test#2 (FP)
5717 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1210 points/GHz
1512 points/GHz
Test#1 (Memory)
1885 points/GHz
2386 points/GHz
TOTAL
15009 points/GHz
17371 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