Intel Core i3 1305U vs i3 1215U

We compared two laptop CPUs: the 1.6 GHz Intel Core i3 1305U with 5-cores against the 1.2 GHz i3 1215U with 6-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 1215U and 1305U
Advantages of Intel Core i3 1305U
  • Newer - released 11-months later
  • 2% higher Turbo Boost frequency (4.5 GHz vs 4.4 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 407.1 MB/sec 495.3 MB/sec
Clang compilation 35.3 Klines/sec 30.7 Klines/sec
HTML 5 Browser 98.8 pages/sec 136 pages/sec
PDF Renderer 150.6 Mpixels/sec 176.2 Mpixels/sec
Text processing 177.2 pages/sec 175.2 pages/sec
Background blur 19.9 images/sec 27.7 images/sec
Photo processing 35.7 images/sec 51.3 images/sec
Ray tracing 4.45 Mpixels/sec 5.51 Mpixels/sec
Sources: GeekBench [1], [2]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 28.9 GOps/sec 37.6 GOps/sec
Floating point math 21.5 GOps/sec 26.8 GOps/sec
Find prime numbers 38M Primes/sec 37M Primes/sec
Random string sorting 12.2M Strings/sec 13.9M Strings/sec
Data encryption 6.7 GBytes/sec 7.4 GBytes/sec
Data compression 108.9 MBytes/sec 122.2 MBytes/sec
Physics 491 Frames/sec 659 Frames/sec
Extended instructions 6.2B Matrices/sec 7.1B Matrices/sec
Sources: PassMark [3], [4]


Full technical specification of Intel Core i3 1305U and i3 1215U


Vendor Intel Intel
Released January 3, 2023 February 23, 2022
Type Laptop Laptop
instruction set x86-64 x86-64
Codename Raptor Lake Alder Lake
Model number i3-1305U i3-1215U
Integrated GPU UHD Graphics (64EU) UHD Graphics (64EU)


Performance Cores
P-Cores 1 2
P-Threads 2 4
Base Frequency (P) 1.6 GHz 1.2 GHz
Turbo Boost Frequency (P) 4.5 GHz 4.4 GHz
Efficient Cores
E-Cores 4 4
E-Threads 4 4
Base Frequency (E) 1.3 GHz 0.9 GHz
Turbo Boost Frequency (E) 3.3 GHz 3.3 GHz
Total Cores 5 6
Total Threads 6 8
Bus Frequency 100 MHz 100 MHz
Multiplier 16x 12x
L1 Cache 80K (per core) 80K (per core)
L2 Cache 1280K (per core) 1280K (per core)
L3 Cache 10MB (shared) 10MB (shared)
Unlocked Multiplier No No


Fabrication process 10 nm 10 nm
TDP (PL1) 12-15 W (configurable) 12-15 W (configurable)
Max. Boost TDP (PL2) 55 W 55 W
Socket BGA-1744 BGA-1744
Peak temperature 100°C 100°C


Integrated Graphics Intel UHD Graphics (64EU) Intel UHD Graphics (64EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1250 MHz 1100 MHz
Shading Units 512 512
TMUs 32 32
ROPs 16 16
Execution Units 64 64
TGP 45 W 45 W

Memory Support

Memory types - DDR5-5200
- DDR4-3200
- LPDDR5-5200
- LPDDR5x-5200
- LPDDR4x-4267
- DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
Memory Size 64 GB 64 GB
Max. Memory Channels 2 2
ECC Support No No


Official site Intel Core i3 1305U official page Intel Core i3 1215U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
24 (29.6%)
57 (70.4%)
Total votes: 81


So which CPU will you choose: Intel Core i3 1215U or i3 1305U?