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Core i7-1280P vs i5-8400


Description
The i7-1280P is based on Alder Lake architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-1280P gets a score of 468.3 k points while the i5-8400 gets 289.6 k points.

Summarizing, the i7-1280P is 1.6 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906a3
906ea
Core
Alder Lake-P
Coffee Lake-S
Architecture
Base frecuency
1.3 GHz
2.8 GHz
Boost frecuency
4.8 GHz
4 GHz
Socket
BGA 1744
LGA 1151
Cores/Threads
14/20
6/6
TDP
28 W
65 W
Cache L1 (d+i)
6x32/8x64+6x48/8x32 kB
6x32+6x32 kB
Cache L2
6x1280+6x2048 kB
6x256 kB
Cache L3
24576 kB
9216 kB
Date
April 2022
September 2017
Mean monothread perf.
91.45k points
64.98k points
Mean multithread perf.
468.3k points
289.61k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-1280P
i5-8400
Test#1 (Integers)
6.94k
4.08k (x0.59)
Test#2 (FP)
18.46k
14.96k (x0.81)
Test#3 (Generic, ZIP)
11.27k
4.98k (x0.44)
Test#1 (Memory)
13.6k
10.29k (x0.76)
TOTAL
50.27k
34.31k (x0.68)

Multithread

i7-1280P

i5-8400
Test#1 (Integers)
44.01k
21.54k (x0.49)
Test#2 (FP)
125.05k
85.13k (x0.68)
Test#3 (Generic, ZIP)
76.28k
28.24k (x0.37)
Test#1 (Memory)
15.52k
4.08k (x0.26)
TOTAL
260.85k
139k (x0.53)

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
i7-1280P
i5-8400
Test#1 (Integers)
39.78k
26.5k (x0.67)
Test#2 (FP)
26.06k
23.11k (x0.89)
Test#3 (Generic, ZIP)
12.44k
5.2k (x0.42)
Test#1 (Memory)
13.17k
10.16k (x0.77)
TOTAL
91.45k
64.98k (x0.71)

Multithread

i7-1280P

i5-8400
Test#1 (Integers)
209.96k
135.08k (x0.64)
Test#2 (FP)
170.21k
121.49k (x0.71)
Test#3 (Generic, ZIP)
72.04k
27.53k (x0.38)
Test#1 (Memory)
16.09k
5.5k (x0.34)
TOTAL
468.3k
289.61k (x0.62)

Performance/W
i7-1280P
i5-8400
Test#1 (Integers)
7499 points/W
2078 points/W
Test#2 (FP)
6079 points/W
1869 points/W
Test#3 (Generic, ZIP)
2573 points/W
424 points/W
Test#1 (Memory)
575 points/W
85 points/W
TOTAL
16725 points/W
4455 points/W

Performance/GHz
i7-1280P
i5-8400
Test#1 (Integers)
8287 points/GHz
6626 points/GHz
Test#2 (FP)
5429 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
2592 points/GHz
1300 points/GHz
Test#1 (Memory)
2744 points/GHz
2541 points/GHz
TOTAL
19051 points/GHz
16245 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