Home > CPU Comparison > Core i7 1255U or Core i5 1335U: what's better?

Intel Core i7 1255U vs i5 1335U

45 out of 100
Intel Core i7 1255U
VS
44 out of 100
Intel Core i5 1335U
Intel Core i7 1255U
Intel Core i5 1335U

We compared two 10-core laptop CPUs: the 1.7 GHz Intel Core i7 1255U against the 1.3 GHz i5 1335U. 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 (2)

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 1335U and 1255U
Advantages of Intel Core i7 1255U
  • More powerful Intel Iris Xe Graphics (96EU) integrated graphics: 1.9 vs 1.6 TFLOPS
  • 2% higher Turbo Boost frequency (4.7 GHz vs 4.6 GHz)
Advantages of Intel Core i5 1335U
  • Supports up to 96 GB DDR5-5200 RAM
  • Newer - released 10 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i7 1255U
vs
Core i5 1335U

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)
Geekbench 6 (Multi-Core)
File compression 626.4 MB/sec 703.6 MB/sec
Clang compilation 49.1 Klines/sec 53.5 Klines/sec
HTML 5 Browser 179.7 pages/sec 219.6 pages/sec
PDF Renderer 201.5 Mpixels/sec 218.9 Mpixels/sec
Text processing 217.7 pages/sec 207.1 pages/sec
Background blur 31.6 images/sec 38.2 images/sec
Photo processing 71.1 images/sec 87.9 images/sec
Ray tracing 9.8 Mpixels/sec 11.8 Mpixels/sec
Sources: GeekBench [1], [2] – 1162 & 1007 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Core i7 1255U
12978
Core i5 1335U +6%
13813
Integer math 47.7 GOps/sec 49.7 GOps/sec
Floating point math 32.2 GOps/sec 33.9 GOps/sec
Find prime numbers 38M Primes/sec 47M Primes/sec
Random string sorting 16.8M Strings/sec 17.5M Strings/sec
Data encryption 9.1 GBytes/sec 9.7 GBytes/sec
Data compression 145.7 MBytes/sec 154.4 MBytes/sec
Physics 750 Frames/sec 819 Frames/sec
Extended instructions 8.2B Matrices/sec 8.7B Matrices/sec
Sources: PassMark [3], [4] – 4528 & 3604 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i7 1255U
77.28
Core i5 1335U +4%
80.21

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 29.7 PPW 26.5 PPW
Geekbench 6 Multi / Watt 477.3 PPW 505.8 PPW
Passmark CPU Mark / Watt 865.2 PPW 920.9 PPW
Blender / Watt 5.15 PPW 5.35 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 i7 1255U
DateBenchmarkResult
πŸ“˜ 2026-02-13 -> Lello75Geekbench 6 CPU2315 / 7219
πŸ“˜ 2025-04-13 (kapple)Cinebench 202495 / 446
Add View all (2)
Intel Core i5 1335U
DateBenchmarkResult
πŸ“˜ 2026-05-15 (Melkon)Geekbench 6 CPU2317 / 7898
πŸ“˜ 2026-05-15 (Melkon)Geekbench 6 CPU2391 / 7543
πŸ“˜ 2025-06-05 (John Wick)Geekbench 6 CPU2347 / 8190
πŸ“˜ 2025-06-05 (John Wick)Cinebench 202495 / 397
Add View all (4)

Specifications

Full technical specification of Intel Core i7 1255U and i5 1335U

General

Vendor Intel Intel
Released February 23, 2022 January 3, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Alder Lake Raptor Lake
Model number i7-1255U i5-1335U
Integrated GPU Iris Xe Graphics (96EU) Iris Xe Graphics (80EU)
Rival Equivalent - - AMD Ryzen 5 7535U
Successor - Intel Core Ultra 7 255U - Intel Core Ultra 5 225U
Intel CPU rating (185th and 191st place)

CPU

Performance Cores
P-Cores 2 2
P-Threads 4 4
Base Frequency (P) 1.7 GHz 1.3 GHz
Turbo Boost Frequency (P) 4.7 GHz 4.6 GHz
Efficient Cores
E-Cores 8 8
E-Threads 8 8
Base Frequency (E) 1.2 GHz 0.9 GHz
Turbo Boost Frequency (E) 3.5 GHz 3.4 GHz
Total
Total Cores 10 10
Total Threads 12 12
Bus Frequency 100 MHz 100 MHz
Multiplier 17x 13x
L1 Cache 80K (per core) 80K (per core)
L2 Cache 1280K (per core) 1280K (per core)
L3 Cache 12MB (shared) 12MB (shared)
Unlocked Multiplier No No

Package

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 100Β°C 100Β°C

iGPU

Integrated Graphics Intel Iris Xe Graphics (96EU) Intel Iris Xe Graphics (80EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1250 MHz 1250 MHz
Shading Units 768 640
TMUs 48 40
ROPs 24 20
Execution Units 96 80
TGP 15 W 15 W
iGPU FLOPS
Core i7 1255U +19%
1.9 TFLOPS
Core i5 1335U
1.6 TFLOPS
More info: Iris Xe Graphics G7 (80EU) compared to Xe Graphics G7 (96EU)

Memory Support

Memory Types - DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267		 - DDR5-5200
- DDR4-3200
- LPDDR5-6400
- LPDDR5x-6400
- LPDDR4x-4267
Max. Memory Size 64 GB 96 GB
Memory Channels 2 2
ECC Support No No

Misc

Official Site Intel Core i7 1255U official page Intel Core i5 1335U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
120 (27.3%)
319 (72.7%)
Total votes: 439

Competitors

1. Intel Core i7 1255U vs AMD Ryzen 7 7730U
2. Intel Core i7 1255U vs AMD Ryzen 7 5700U
3. Intel Core i7 1255U vs Intel Core i7 1355U (1)
4. Intel Core i7 1255U vs Intel Core i5 12500H
5. Intel Core i5 1335U vs Intel Core 5 120U (2)
6. Intel Core i5 1335U vs AMD Ryzen 5 7530U (4)
7. Intel Core i5 1335U vs AMD Ryzen 7 7730U (7)
8. Intel Core i5 1335U vs Intel Core Ultra 5 125U (1)
9. Intel Core i5 1335U vs Apple M3
10. Intel Core i5 1335U vs Intel Core i5 1235U (5)
Compare other CPUs (460+)

Comments

So which CPU will you choose: Intel Core i5 1335U or i7 1255U?
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Anonimous July 14, 2024 at 03:09 PM
The integrated GPU of the Intel Core i7-1255U is the only advantage between the Intel Core i5-1335U.
+50 Reply
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Anon February 25, 2024 at 11:37 AM
Why don't you list everything left to right, so that each processor's stat is under that processor, having single core performance on the left and then multicore on the right with one processor under the other on both sides is very confusing.
+20 Reply
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