Home > CPU Comparison > Core i3 N305 or Core i3 1215U: what's better?

Intel Core i3 N305 vs i3 1215U

31 out of 100
Intel Core i3 N305
VS
42 out of 100
Intel Core i3 1215U
Intel Core i3 N305
Intel Core i3 1215U

We compared two laptop CPUs: the 1.8 GHz Intel Core i3 N305 with 8-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.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments (6)

Review

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
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
πŸ”Œ Usage Scenario:

Key Differences

What are the key differences between 1215U and N305
Advantages of Intel Core i3 N305
  • Has 2 more physical cores
  • Newer - released 10 months later
Advantages of Intel Core i3 1215U
  • Supports up to 64 GB DDR5-4800 RAM
  • More powerful Intel UHD Graphics (64EU) integrated graphics: 1.1 vs 0.6 TFLOPS
  • Has 4 MB larger L3 cache size
  • 63% faster in a single-core Geekbench v6 test - 2184 vs 1339 points
  • Newer PCI Express version – 4.0

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i3 N305
vs
Core i3 1215U

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Core i3 N305
1339
Core i3 1215U +63%
2184
Geekbench 6 (Multi-Core)
Core i3 N305
5277
Core i3 1215U +7%
5662
File compression 447.7 MB/sec 356.7 MB/sec
Clang compilation 41.7 Klines/sec 45.1 Klines/sec
HTML 5 Browser 123.7 pages/sec 117.1 pages/sec
PDF Renderer 162.8 Mpixels/sec 180.5 Mpixels/sec
Text processing 167.4 pages/sec 224.7 pages/sec
Background blur 25 images/sec 18.9 images/sec
Photo processing 42.1 images/sec 54.2 images/sec
Ray tracing 7.03 Mpixels/sec 9.45 Mpixels/sec
Sources: GeekBench [1], [2] – 789 & 1106 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Core i3 N305
2040
Core i3 1215U +52%
3101
Passmark CPU (Multi-Core)
Core i3 N305
9377
Core i3 1215U +8%
10106
Integer math 32.8 GOps/sec 34.4 GOps/sec
Floating point math 21.9 GOps/sec 24.6 GOps/sec
Find prime numbers 23M Primes/sec 30M Primes/sec
Random string sorting 13.8M Strings/sec 12.7M Strings/sec
Data encryption 7.6 GBytes/sec 6.8 GBytes/sec
Data compression 111 MBytes/sec 113.1 MBytes/sec
Physics 527 Frames/sec 546 Frames/sec
Extended instructions 5.7B Matrices/sec 6.7B Matrices/sec
Sources: PassMark [3], [4] – 1152 & 3915 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i3 N305
58.26
Core i3 1215U +1%
58.9

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 16.1 PPW 18.9 PPW
Geekbench 6 Multi / Watt 351.8 PPW 377.5 PPW
Passmark CPU Mark / Watt 625.1 PPW 673.7 PPW
Blender / Watt 3.88 PPW 3.93 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
Intel Core i3 N305
DateBenchmarkResult
πŸ“˜ 2025-10-13 (Aleman82)Geekbench 6 CPU1264 / 3791
πŸ“˜ 2025-10-08 (Kbzabeto82)Geekbench 6 CPU1264 / 3791
Add View all (2)
Intel Core i3 1215U
DateBenchmarkResult
πŸ“˜ 2025-04-11 (Shanmukh)Geekbench 6 CPU2126 / 6248
πŸ“˜ 2023-11-06 (goryn81)Cinebench 202489 / 283
Add View all (2)

Specifications

Full technical specification of Intel Core i3 N305 and i3 1215U

General

Vendor Intel Intel
Released January 3, 2023 February 23, 2022
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Alder Lake Alder Lake
Model number i3-N305 i3-1215U
Integrated GPU UHD Graphics (32EU) UHD Graphics (64EU)
Successor - - Intel Core 3 100U

CPU

Performance Cores
P-Cores - 2
P-Threads - 4
Base Frequency (P) - 1.2 GHz
Turbo Boost Frequency (P) - 4.4 GHz
Efficient Cores
E-Cores 8 4
E-Threads 8 4
Base Frequency (E) 1.8 GHz 0.9 GHz
Turbo Boost Frequency (E) 3.9 GHz 3.3 GHz
Total
Total Cores 8 6
Total Threads 8 8
Bus Frequency 100 MHz 100 MHz
Multiplier 18x 12x
L1 Cache 96K (per core) 80K (per core)
L2 Cache 2MB (shared) 1280K (per core)
L3 Cache 6MB (shared) 10MB (shared)
Unlocked Multiplier No No

Package

Fabrication Process 10 nm 10 nm
TDP (PL1) 9-15 W (configurable) 12-15 W (configurable)
Max. Boost TDP (PL2) - 55 W
Socket BGA-1744 BGA-1744
Peak Temperature 105Β°C 100Β°C

iGPU

Integrated Graphics Intel UHD Graphics (32EU) Intel UHD Graphics (64EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1250 MHz 1100 MHz
Shading Units 256 512
TMUs 16 32
ROPs 8 16
Execution Units 32 64
TGP 15 W 15 W
iGPU FLOPS
Core i3 N305
0.6 TFLOPS
Core i3 1215U +83%
1.1 TFLOPS
More info: UHD Graphics (64 EU) compared to Graphics Xe (32 EU)

Memory Support

Memory Types - DDR5-4800
- DDR4-3200
- LPDDR5-4800		 - DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
Max. Memory Size 16 GB 64 GB
Memory Channels 1 2
ECC Support No No

Misc

Official Site Intel Core i3 N305 official page Intel Core i3 1215U official page
PCI Express Version 3.0 4.0
PCI Express Lanes 9 20

Cast your vote

Choose between two processors
256 (20.5%)
995 (79.5%)
Total votes: 1251

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8. Intel Core i3 N305 vs Intel Processor N100
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Comments

So which CPU will you choose: Intel Core i3 1215U or i3 N305?
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Just May 9, 2023 at 01:18 PM
What just happened if the processor doesn't have a p-core?
+341 Reply
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Ben June 9, 2023 at 10:06 AM
It becomes a mediocre CPU. Both occupy similar laptop price ranges, yet i3 1215U wins in pretty much everything by a wide margin.
+186 Reply
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Mark August 31, 2023 at 11:31 AM
The main advantage is fanless, lighter design.
+142 Reply
Avatar
Oguz October 7, 2024 at 10:45 AM
Mark, which one is fanless
+60 Reply
Avatar
Dhi October 20, 2024 at 02:05 PM
Oguz, Probably the ones with n305
+24 Reply
Avatar
Kyung July 27, 2025 at 12:47 PM
Oguz, It's fun to compare low end processors, but laptops with fans are just so much better - N305 should not have the "Core i3" name. What the hell Intel.
0 Reply
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