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Core i5-8250U vs i9-11900KB


Description
The i5-8250U is based on Kaby Lake architecture while the i9-11900KB is based on Tiger Lake.

Using the multithread performance as a reference, the i5-8250U gets a score of 153.5 k points while the i9-11900KB gets 537.2 k points.

Summarizing, the i9-11900KB is 3.5 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
806d1
Core
Kaby Lake-R
Tiger Lake-H
Architecture
Base frecuency
1.6 GHz
3.3 GHz
Boost frecuency
3.4 GHz
4.9 GHz
Socket
BGA1356
BGA 1787
Cores/Threads
4/8
8/16
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x48 kB
Cache L2
4x256 kB
8x1280 kB
Cache L3
6144 kB
24576 kB
Date
August 2017
July 2021
Mean monothread perf.
53.8k points
63.79k points
Mean multithread perf.
153.5k points
537.18k 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
i5-8250U
i9-11900KB
Test#1 (Integers)
22k
24.09k (x1.1)
Test#2 (FP)
19.55k
19.54k (x1)
Test#3 (Generic, ZIP)
4.41k
8.48k (x1.92)
Test#1 (Memory)
7.83k
11.68k (x1.49)
TOTAL
53.8k
63.79k (x1.19)

Multithread

i5-8250U

i9-11900KB
Test#1 (Integers)
70.15k
220.79k (x3.15)
Test#2 (FP)
63.27k
225.98k (x3.57)
Test#3 (Generic, ZIP)
15.29k
79.1k (x5.17)
Test#1 (Memory)
4.8k
11.32k (x2.36)
TOTAL
153.5k
537.18k (x3.5)

Performance/W
i5-8250U
i9-11900KB
Test#1 (Integers)
4676 points/W
3397 points/W
Test#2 (FP)
4218 points/W
3477 points/W
Test#3 (Generic, ZIP)
1019 points/W
1217 points/W
Test#1 (Memory)
320 points/W
174 points/W
TOTAL
10233 points/W
8264 points/W

Performance/GHz
i5-8250U
i9-11900KB
Test#1 (Integers)
6471 points/GHz
4917 points/GHz
Test#2 (FP)
5750 points/GHz
3988 points/GHz
Test#3 (Generic, ZIP)
1298 points/GHz
1730 points/GHz
Test#1 (Memory)
2304 points/GHz
2384 points/GHz
TOTAL
15823 points/GHz
13018 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