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Core i9-14900K vs i9-7980XE


Description
The i9-14900K is based on Raptor Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i9-14900K gets a score of 1756.6 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-14900K is 1.4 times faster than the i9-7980XE. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
b0671
50654
Core
Raptor Lake-
Skylake-X
Architecture
Raptor Lake
Base frecuency
3.2 GHz
2.6 GHz
Boost frecuency
6 GHz
4.4 GHz
Socket
LGA 1700
LGA 2066
Cores/Threads
24/32
18/36
TDP
125 W
165 W
Cache L1 (d+i)
kB
18x32+18x32 kB
Cache L2
kB
18x1024 kB
Cache L3
36864 kB
25344 kB
Date
October 2023
May 2017
Mean monothread perf.
137.37k points
76.43k points
Mean multithread perf.
1756.59k 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
i9-14900K
i9-7980XE
Test#1 (Integers)
63.55k
31.16k (x0.49)
Test#2 (FP)
32.3k
28.13k (x0.87)
Test#3 (Generic, ZIP)
18.92k
6.65k (x0.35)
Test#1 (Memory)
22.61k
10.5k (x0.46)
TOTAL
137.37k
76.43k (x0.56)

Multithread

i9-14900K

i9-7980XE
Test#1 (Integers)
813.87k
560.19k (x0.69)
Test#2 (FP)
608.32k
516.97k (x0.85)
Test#3 (Generic, ZIP)
313.09k
123.94k (x0.4)
Test#1 (Memory)
21.31k
22.69k (x1.06)
TOTAL
1756.59k
1223.79k (x0.7)

Performance/W
i9-14900K
i9-7980XE
Test#1 (Integers)
6511 points/W
3395 points/W
Test#2 (FP)
4867 points/W
3133 points/W
Test#3 (Generic, ZIP)
2505 points/W
751 points/W
Test#1 (Memory)
170 points/W
137 points/W
TOTAL
14053 points/W
7417 points/W

Performance/GHz
i9-14900K
i9-7980XE
Test#1 (Integers)
10591 points/GHz
7081 points/GHz
Test#2 (FP)
5383 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
3153 points/GHz
1512 points/GHz
Test#1 (Memory)
3768 points/GHz
2386 points/GHz
TOTAL
22895 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