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Core i9-12900K vs i5-8259U


Description
The i9-12900K is based on Alder Lake architecture while the i5-8259U is based on Coffee Lake.

Using the multithread performance as a reference, the i9-12900K gets a score of 1131.6 k points while the i5-8259U gets 229 k points.

Summarizing, the i9-12900K is 4.9 times faster than the i5-8259U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
90672
806ea
Core
Alder Lake
Coffee Lake-U
Architecture
Base frecuency
2.4 GHz
2.3 GHz
Boost frecuency
5.2 GHz
3.8 GHz
Socket
LGA 1700
BGA 1528
Cores/Threads
16/24
4/8
TDP
241 W
28 W
Cache L1 (d+i)
8x32/8x64+8x48/8x32 kB
4x32+x4x32 kB
Cache L2
8x1280+8x2048 kB
4x256 kB
Cache L3
30720 kB
6144 kB
Date
November 2021
March 2018
Mean monothread perf.
109.05k points
54.55k points
Mean multithread perf.
1131.59k points
229k 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
i5-8259U
Test#1 (Integers)
47.92k
21.06k (x0.44)
Test#2 (FP)
30.1k
19.79k (x0.66)
Test#3 (Generic, ZIP)
15.65k
4.72k (x0.3)
Test#1 (Memory)
15.38k
8.98k (x0.58)
TOTAL
109.05k
54.55k (x0.5)

Multithread

i9-12900K

i5-8259U
Test#1 (Integers)
502.11k
96.43k (x0.19)
Test#2 (FP)
414.67k
85.46k (x0.21)
Test#3 (Generic, ZIP)
192.52k
22.31k (x0.12)
Test#1 (Memory)
22.3k
24.81k (x1.11)
TOTAL
1131.59k
229k (x0.2)

Performance/W
i9-12900K
i5-8259U
Test#1 (Integers)
2083 points/W
3444 points/W
Test#2 (FP)
1721 points/W
3052 points/W
Test#3 (Generic, ZIP)
799 points/W
797 points/W
Test#1 (Memory)
93 points/W
886 points/W
TOTAL
4695 points/W
8179 points/W

Performance/GHz
i9-12900K
i5-8259U
Test#1 (Integers)
9216 points/GHz
5543 points/GHz
Test#2 (FP)
5789 points/GHz
5208 points/GHz
Test#3 (Generic, ZIP)
3009 points/GHz
1241 points/GHz
Test#1 (Memory)
2957 points/GHz
2363 points/GHz
TOTAL
20971 points/GHz
14355 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