Home > CPU Comparison > Core i7 1255U or Ryzen 5 7520U: what's better?

Intel Core i7 1255U vs AMD Ryzen 5 7520U

45 out of 100
Intel Core i7 1255U
VS
33 out of 100
AMD Ryzen 5 7520U
Intel Core i7 1255U
AMD Ryzen 5 7520U

We compared two laptop CPUs: the 1.7 GHz Intel Core i7 1255U with 10-cores against the 2.8 GHz AMD Ryzen 5 7520U with 4-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

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
DeviceFacts 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 7520U and 1255U
Advantages of Intel Core i7 1255U
  • Supports up to 64 GB DDR5-4800 RAM
  • More powerful Intel Iris Xe Graphics (96EU) integrated graphics: 1.9 vs 0.5 TFLOPS
  • Has 8 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Has 6 more physical cores
  • 77% faster in a single-core Geekbench v6 test - 2248 vs 1270 points
  • Newer PCI Express version – 4.0
  • 9% higher Turbo Boost frequency (4.7 GHz vs 4.3 GHz)
Advantages of AMD Ryzen 5 7520U
  • More modern manufacturing process – 6 versus 10 nanometers
  • Newer - released 7 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i7 1255U
vs
Ryzen 5 7520U

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 i7 1255U +77%
2248
Ryzen 5 7520U
1270
Geekbench 6 (Multi-Core)
Core i7 1255U +70%
7160
Ryzen 5 7520U
4219
File compression 626.4 MB/sec 394.8 MB/sec
Clang compilation 49.1 Klines/sec 27 Klines/sec
HTML 5 Browser 179.7 pages/sec 91.2 pages/sec
PDF Renderer 201.5 Mpixels/sec 127.6 Mpixels/sec
Text processing 217.7 pages/sec 114.6 pages/sec
Background blur 31.6 images/sec 23 images/sec
Photo processing 71.1 images/sec 38.3 images/sec
Ray tracing 9.8 Mpixels/sec 7.38 Mpixels/sec
Sources: GeekBench [1], [2] – 1162 & 1108 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Core i7 1255U +33%
3149
Ryzen 5 7520U
2376
Passmark CPU (Multi-Core)
Core i7 1255U +45%
12978
Ryzen 5 7520U
8925
Integer math 47.7 GOps/sec 30.6 GOps/sec
Floating point math 32.2 GOps/sec 14.7 GOps/sec
Find prime numbers 38M Primes/sec 20M Primes/sec
Random string sorting 16.8M Strings/sec 14.2M Strings/sec
Data encryption 9.1 GBytes/sec 6.3 GBytes/sec
Data compression 145.7 MBytes/sec 132 MBytes/sec
Physics 750 Frames/sec 432 Frames/sec
Extended instructions 8.2B Matrices/sec 6B Matrices/sec
Sources: PassMark [3], [4] – 4528 & 1843 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i7 1255U +51%
77.28
Ryzen 5 7520U
51.1

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 29.7 PPW 18.6 PPW
Geekbench 6 Multi / Watt 477.3 PPW 281.3 PPW
Passmark CPU Mark / Watt 865.2 PPW 595 PPW
Blender / Watt 5.15 PPW 3.41 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“˜ 2026-10-08 (dell)Geekbench 7 CPU1840 / 7197
πŸ“˜ 2026-02-13 -> Lello75Geekbench 6 CPU2315 / 7219
πŸ“˜ 2025-04-13 (kapple)Cinebench 202495 / 446
Add View all (3)
AMD Ryzen 5 7520U
DateBenchmarkResult
πŸ“˜ 2025-11-13 (kot99)Geekbench 6 CPU1444 / 4688
Add View all (1)

Specifications

Full technical specification of Intel Core i7 1255U and AMD Ryzen 5 7520U

General

Vendor Intel Amd
Released February 23, 2022 September 22, 2022
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Alder Lake Zen 2 (Mendocino)
Model number i7-1255U -
Integrated GPU Iris Xe Graphics (96EU) Radeon 610M
Successor - Intel Core Ultra 7 255U -
Intel CPU rating (#185th place)
AMD Ryzen CPU ranking (#174th place)

CPU

Performance Cores
P-Cores 2 4
P-Threads 4 8
Base Frequency (P) 1.7 GHz 2.8 GHz
Turbo Boost Frequency (P) 4.7 GHz 4.3 GHz
Efficient Cores
E-Cores 8 -
E-Threads 8 -
Base Frequency (E) 1.2 GHz -
Turbo Boost Frequency (E) 3.5 GHz -
Total
Total Cores 10 4
Total Threads 12 8
Bus Frequency 100 MHz 100 MHz
Multiplier 17x 28x
L1 Cache 80K (per core) 64K (per core)
L2 Cache 1280K (per core) 512K (per core)
L3 Cache 12MB (shared) 4MB (shared)
Unlocked Multiplier No No

Package

Fabrication Process 10 nm 6 nm
TDP (PL1) 12-15 W (configurable) 15 W
Max. Boost TDP (PL2) 55 W -
Socket BGA-1744 FP6
Peak Temperature 100Β°C 95Β°C

iGPU

Integrated Graphics Intel Iris Xe Graphics (96EU) Radeon 610M
GPU Base Clock 300 MHz 400 MHz
GPU Boost Clock 1250 MHz 1900 MHz
Shading Units 768 128
TMUs 48 8
ROPs 24 4
Execution Units 96 2
TGP 15 W 15 W
iGPU FLOPS
Core i7 1255U +280%
1.9 TFLOPS
Ryzen 5 7520U
0.5 TFLOPS
More info: Radeon 610M compared to Iris Xe Graphics G7 (96EU)

Memory Support

Memory Types - DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267		 - LPDDR5-5500
Max. Memory Size 64 GB 16 GB
Memory Channels 2 2
ECC Support No No

Misc

Official Site Intel Core i7 1255U official page AMD Ryzen 5 7520U official page
PCI Express Version 4.0 3.0
PCI Express Lanes 20 4

Cast your vote

Choose between two processors
26 (61.9%)
16 (38.1%)
Total votes: 42

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7. Intel Core i7 1255U vs Intel Core i5 1335U (2)
8. Intel Core i7 1255U vs Intel Core i7 1355U (1)
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10. Intel Core i7 1255U vs AMD Ryzen 7 5700U
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Comments

So which CPU will you choose: AMD Ryzen 5 7520U or Intel Core i7 1255U?
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