Intel Core i5 1240P vs Intel Core i5 8400

Compared 2 processors: Intel Core i5 1240P, vs Intel Core i5 8400. Below are specs, tests, pros and cons for each device

Review

Key Specs Intel Core i5 1240P and Intel Core i5 8400
Single-Thread Perf.
Single-Core Benchmark Score
Multi-Thread Perf.
Multi-Core Benchmark Score
Energy Efficiency
Chip Power Efficiency
Integrated Graphics
iGPU Performance in Games & 3D
NanoReview Score
Overall score by NanoReview

Tests & specs

Specs & test comparison

Benchmarks

CPU performance comparison across tasks
Cinebench R23
Cinebench R23 (Single-Core)
Intel Core i5 1240P
1510
Intel Core i5 8400
1028
Cinebench R23 (Multi-Core)
Intel Core i5 1240P
9291
Intel Core i5 8400
5852
Cinebench 2024
Cinebench 2024 (Single-Core)
Intel Core i5 1240P
65
Intel Core i5 8400
n/a
Cinebench 2024 (Single-Core)
Intel Core i5 1240P
88
Intel Core i5 8400
n/a
PassMark
PassMark CPU (Single-Core)
Intel Core i5 1240P
3243
Intel Core i5 8400
2373
PassMark CPU (Multi-Core)
Intel Core i5 1240P
16780
Intel Core i5 8400
9222
Integer Math63.2 GOps/s25.6 GOps/s
Floating-Point Math43.9 GOps/s22 GOps/s
Prime Number Search48 M primes/s37 M primes/s
Random String Sort21.8 M strings/s16 M strings/s
Data Encryption11.6 GB/s2.8 GB/s
Data Compression194.8 MB/s130.1 MB/s
Physics938 frames/s636 frames/s
Extended Instructions113 M matrices/s115 M matrices/s
GeekBench v6
Geekbench 6 (Single-Core)
Intel Core i5 1240P
2201
Intel Core i5 8400
1414
Geekbench 6 (Multi-Core)
Intel Core i5 1240P
8643
Intel Core i5 8400
5082
File Compression629 MB/s392.9 MB/s
Clang Compilation61.4 KLines/s36 KLines/s
HTML5 Browser212.7 pages/s115 pages/s
PDF Rendering278.2 MP/sec156.8 MP/sec
Text Processing196.2 pages/s139 pages/s
Background Blur39 frames/s33.8 frames/s
Photo Processing76.8 frames/s49.9 frames/s
Ray Tracing13.8 MP/sec5.93 MP/sec

Blender

Real-world 3D modeling test
Blender CPU
Intel Core i5 1240P
110.19
Intel Core i5 8400
77.38

Performance/Watt

Points per watt of PL1 TDP
Geekbench 6 Multi / W 308.7 PPW 78.2 PPW
PassMark CPU / W 599.3 PPW 141.9 PPW
Cinebench 2024 / W 3.1 PPW n/a
Blender / W 3.94 PPW 1.19 PPW

General Info

Manufacturer Intel Intel
Announced February, 23, 2022 October, 5, 2017
Type Laptop use PC use
Architecture x86-64 x86-64
Codename Alder Lake Coffee Lake
Model number i5-1240P i5-8400
Integrated GPU Iris Xe Graphics (80EU) UHD Graphics 630

Processor

Performance cores
Cores 4 6
Threads 8 6
Frequency 1.7 GHz 2.8 GHz
Max Frequency (Turbo) 4.4 GHz 4 GHz
Efficiency cores
Cores8n/a
Threads8n/a
Frequency1.2 GHzn/a
Max Frequency (Turbo)3.3 GHzn/a
General
Cores count126
Threads count166
Bus frequency100 MHz100 MHz
Bandwidthn/a8 GT/s
Multiplier17x28x
L1 cache80 KB/core64 KB/core
L2 cache1280 KB/core256 KB/core
L3 Cache12 MB total9 MB total
Unlocked multiplierNoNo

Package

Process tech. 10 nm 14 nm
Power (TDP) 20-28 W 65 W
Max TDP (Boost) 64 W n/a
Socket BGA-1744 LGA-1151
Critical temp. 100 °C 100 °C

Memory Support

Memory Type - DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
DDR4-2666
Max Size 64 GB 128 GB
Channels 2 2
ECC support No No
Max memory bandwidth n/a 41.6 GB

Other

PCIe Version 4.0 3.0
Max PCIe Lanes 20 16
Channels n/a 41422

Results

After analyzing the data, we consider Intel Core i5 1240P the clear winner in this comparison.

Survey

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