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Core i9-12900K vs i9-7980XE


Description
The i9-12900K is based on Alder Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i9-12900K gets a score of 1131.6 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 1.1 times faster than the i9-12900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
90672
50654
Core
Alder Lake
Skylake-X
Architecture
Base frecuency
2.4 GHz
2.6 GHz
Boost frecuency
5.2 GHz
4.4 GHz
Socket
LGA 1700
LGA 2066
Cores/Threads
16/24
18/36
TDP
241 W
165 W
Cache L1 (d+i)
8x32/8x64+8x48/8x32 kB
18x32+18x32 kB
Cache L2
8x1280+8x2048 kB
18x1024 kB
Cache L3
30720 kB
25344 kB
Date
November 2021
May 2017
Mean monothread perf.
109.05k points
76.43k points
Mean multithread perf.
1131.59k 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
i9-12900K
i9-7980XE
Test#1 (Integers)
47.92k
31.16k (x0.65)
Test#2 (FP)
30.1k
28.13k (x0.93)
Test#3 (Generic, ZIP)
15.65k
6.65k (x0.43)
Test#1 (Memory)
15.38k
10.5k (x0.68)
TOTAL
109.05k
76.43k (x0.7)

Multithread

i9-12900K

i9-7980XE
Test#1 (Integers)
502.11k
560.19k (x1.12)
Test#2 (FP)
414.67k
516.97k (x1.25)
Test#3 (Generic, ZIP)
192.52k
123.94k (x0.64)
Test#1 (Memory)
22.3k
22.69k (x1.02)
TOTAL
1131.59k
1223.79k (x1.08)

Performance/W
i9-12900K
i9-7980XE
Test#1 (Integers)
2083 points/W
3395 points/W
Test#2 (FP)
1721 points/W
3133 points/W
Test#3 (Generic, ZIP)
799 points/W
751 points/W
Test#1 (Memory)
93 points/W
137 points/W
TOTAL
4695 points/W
7417 points/W

Performance/GHz
i9-12900K
i9-7980XE
Test#1 (Integers)
9216 points/GHz
7081 points/GHz
Test#2 (FP)
5789 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
3009 points/GHz
1512 points/GHz
Test#1 (Memory)
2957 points/GHz
2386 points/GHz
TOTAL
20971 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