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Intel Core i7-1280P vs Intel Core i7-1355U: Comparison
Core i7-1280P vs Core i7-1355U: the l3 cache difference
Start with l3 cache, because it is the widest measured gap between them: Core i7-1280P 24 MB against Core i7-1355U 12 MB, 50% in favour of Core i7-1280P. There is a split on p-core base clock as well, 1.8 GHz on the Core i7-1280P versus 1.7 GHz on the Core i7-1355U. They differ on tdp too, 28 W on the Core i7-1280P versus 15 W on the Core i7-1355U. Socket is not the same on both, FCBGA1744 on the Core i7-1280P versus BGA 1744 on the Core i7-1355U. They differ on release year too, 2022 on the Core i7-1280P versus 2023 on the Core i7-1355U.
Which should you buy, Core i7-1280P or Core i7-1355U?
The Core i7-1280P suits thin-and-light laptops and everyday productivity, though it is not built for gaming laptops and heavy sustained workloads. The Core i7-1355U is the one to take for ultra-thin laptops and business laptops, though it is the wrong buy for gaming laptops and heavy sustained workloads. Our rating of the Core i7-1280P (8/10): the Intel Core i7-1280P balances performance and efficiency, a solid pick for mainstream thin-and-light laptops. Our rating of the Core i7-1355U (7.7/10): the Intel Core i7-1355U prioritizes battery life and portability, fitting thin business and everyday laptops rather than performance-first designs.
What Core i7-1280P and Core i7-1355U have in common
Everything else lines up. Efficiency cores, integrated graphics, form factor, igpu and market segment read the same on both, so those are not worth weighing. They match on 1 further specification as well.
Frequently asked questions
Do the Core i7-1280P and Core i7-1355U differ on total cores?
Yes. Total Cores reads 14 on the Core i7-1280P versus 10 on the Core i7-1355U.
Is the SMT Enabled the same on the Core i7-1280P and Core i7-1355U?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- Intel Core i7-1280P
- Laptop
- Intel Core i7-1355U
- Laptop
Codename
- Intel Core i7-1280P
- Alder Lake
- Intel Core i7-1355U
- Raptor Lake
Release Year
- Intel Core i7-1280P
- 2022
- Intel Core i7-1355U
- 2023
TDP
- Intel Core i7-1280P
- 28 W
- Intel Core i7-1355U
- 15 W
iGPU
- Intel Core i7-1280P
- Intel Iris Xe Graphics
- Intel Core i7-1355U
- Intel Iris Xe Graphics
Market Segment
- Intel Core i7-1280P
- Laptop
- Intel Core i7-1355U
- Laptop
Microarchitecture
- Intel Core i7-1280P
- Alder Lake
- Intel Core i7-1355U
- Raptor Lake
Socket
- Intel Core i7-1280P
- FCBGA1744
- Intel Core i7-1355U
- BGA 1744 (BGA, soldered)
Process Node
- Intel Core i7-1280P
- 10 nm
- Intel Core i7-1355U
- 7 nm
Total Cores
- Intel Core i7-1280P
- 14Best
- Intel Core i7-1355U
- 10
Performance Cores
- Intel Core i7-1280P
- 6Best
- Intel Core i7-1355U
- 2
Efficiency Cores
- Intel Core i7-1280P
- 8
- Intel Core i7-1355U
- 8
Total Threads
- Intel Core i7-1280P
- 20Best
- Intel Core i7-1355U
- 12
SMT Enabled
- Intel Core i7-1280P
- Yes
- Intel Core i7-1355U
- Yes
P-Core Base Clock
- Intel Core i7-1280P
- 1.8 GHz
- Intel Core i7-1355U
- 1.7 GHz
P-Core Boost Clock
- Intel Core i7-1280P
- 4.80 GHz
- Intel Core i7-1355U
- 5.0 GHz
L3 Cache
- Intel Core i7-1280P
- 24 MBBest
- Intel Core i7-1355U
- 12 MB-50%
Base Power
- Intel Core i7-1280P
- 28 W
- Intel Core i7-1355U
- 15 W
Max Turbo Power
- Intel Core i7-1280P
- 64 W
- Intel Core i7-1355U
- 55 W
Memory Type
- Intel Core i7-1280P
- DDR5 or DDR4
- Intel Core i7-1355U
- DDR5, DDR4, LPDDR5/x, LPDDR4x
Integrated Graphics
- Intel Core i7-1280P
- Yes
- Intel Core i7-1355U
- Yes
Which one should you pick?
Choose 1280P if you want the higher L3 cache (24 MB vs 12 MB).
Choose 1355U if you already have it on hand or find it at a lower price.
Verdict
Intel Core i7-1280P
8 / 10 Expert Rating
The Intel Core i7-1280P balances performance and efficiency, a solid pick for mainstream thin-and-light laptops.
Intel Core i7-1355U
7.7 / 10 Expert Rating
The Intel Core i7-1355U prioritizes battery life and portability, fitting thin business and everyday laptops rather than performance-first designs.