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Intel Core i7-1255U vs Intel Core i7-1260P: Comparison
Core i7-1255U vs Core i7-1260P: the l3 cache difference
On l3 cache the spread is 33%, Core i7-1255U 12 MB against Core i7-1260P 18 MB, so Core i7-1260P takes it. Measured rather than claimed: in Cinebench R23 (Multi-Core) the Core i7-1260P returns 11,159 against 7,758, a 30% lead. There is a split on tdp as well, 15 W on the Core i7-1255U versus 28 W on the Core i7-1260P. Configurable tdp floor is not the same on both, 9 W on the Core i7-1255U versus 20 W on the Core i7-1260P. Add pcie lanes to that, 10 on the Core i7-1255U versus 12 on the Core i7-1260P, and the pattern holds.
Who each one is for
The Core i7-1255U is the one to take for ultra-thin laptops and business laptops, though it is not the pick for gaming laptops and heavy sustained workloads. The Core i7-1260P suits thin-and-light laptops and everyday productivity, though it is the wrong buy for gaming laptops and heavy sustained workloads. Our rating of the Core i7-1255U (7.7/10): the Intel Core i7-1255U prioritizes battery life and portability, fitting thin business and everyday laptops rather than performance-first designs. Our rating of the Core i7-1260P (8/10): the Intel Core i7-1260P balances performance and efficiency, a solid pick for mainstream thin-and-light laptops.
Where the two are identical
Where they agree, they agree completely, efficiency cores, p-core boost clock, e-core boost clock, integrated graphics and socket included, so the decision does not turn on any of those. They match on 17 further specifications as well.
Frequently asked questions
Do the Core i7-1255U and Core i7-1260P differ on total cores?
Yes. Total Cores reads 10 on the Core i7-1255U versus 12 on the Core i7-1260P.
Is the Socket Status the same on the Core i7-1255U and Core i7-1260P?
It is. Both are listed at Mature, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- Intel Core i7-1255U
- Intel
- Intel Core i7-1260P
- Intel
Product Line
- Intel Core i7-1255U
- Core
- Intel Core i7-1260P
- Core
Form Factor
- Intel Core i7-1255U
- Laptop
- Intel Core i7-1260P
- Laptop
Model Number
- Intel Core i7-1255U
- i7-1255U
- Intel Core i7-1260P
- i7-1260P
Codename
- Intel Core i7-1255U
- Alder Lake
- Intel Core i7-1260P
- Alder Lake
Release Year
- Intel Core i7-1255U
- 2022
- Intel Core i7-1260P
- 2022
TDP
- Intel Core i7-1255U
- 15 W
- Intel Core i7-1260P
- 28 W
iGPU
- Intel Core i7-1255U
- Intel Iris Xe Graphics
- Intel Core i7-1260P
- Intel Iris Xe Graphics
Market Segment
- Intel Core i7-1255U
- Laptop
- Intel Core i7-1260P
- Laptop
Microarchitecture
- Intel Core i7-1255U
- Alder Lake
- Intel Core i7-1260P
- Alder Lake
Socket
- Intel Core i7-1255U
- FCBGA1744
- Intel Core i7-1260P
- FCBGA1744
Socket Status
- Intel Core i7-1255U
- Mature
- Intel Core i7-1260P
- Mature
Process Node
- Intel Core i7-1255U
- 7 nm
- Intel Core i7-1260P
- 7 nm
Total Cores
- Intel Core i7-1255U
- 10
- Intel Core i7-1260P
- 12Best
Performance Cores
- Intel Core i7-1255U
- 2
- Intel Core i7-1260P
- 4Best
Efficiency Cores
- Intel Core i7-1255U
- 8
- Intel Core i7-1260P
- 8
Total Threads
- Intel Core i7-1255U
- 12
- Intel Core i7-1260P
- 16Best
SMT Enabled
- Intel Core i7-1255U
- Yes
- Intel Core i7-1260P
- Yes
P-Core Base Clock
- Intel Core i7-1255U
- 1.7 GHz
- Intel Core i7-1260P
- 2.1 GHz
P-Core Boost Clock
- Intel Core i7-1255U
- 4.7 GHz
- Intel Core i7-1260P
- 4.7 GHz
E-Core Base Clock
- Intel Core i7-1255U
- 1.2 GHz
- Intel Core i7-1260P
- 1.5 GHz
E-Core Boost Clock
- Intel Core i7-1255U
- 3.5 GHz
- Intel Core i7-1260P
- 3.5 GHz
L3 Cache
- Intel Core i7-1255U
- 12 MB-33%
- Intel Core i7-1260P
- 18 MBBest
Base Power
- Intel Core i7-1255U
- 15 W
- Intel Core i7-1260P
- 28 W
Max Turbo Power
- Intel Core i7-1255U
- 55 W
- Intel Core i7-1260P
- 64 W
Configurable TDP Floor
- Intel Core i7-1255U
- 9 W
- Intel Core i7-1260P
- 20 W
Memory Type
- Intel Core i7-1255U
- DDR5, DDR4, LPDDR5, LPDDR4x
- Intel Core i7-1260P
- DDR5, DDR4, LPDDR5, LPDDR4x
Max Memory Speed
- Intel Core i7-1255U
- 4800 MT/s
- Intel Core i7-1260P
- 4800 MT/s
Memory Channels
- Intel Core i7-1255U
- 2
- Intel Core i7-1260P
- 2
Max Memory Capacity
- Intel Core i7-1255U
- 64 GB
- Intel Core i7-1260P
- 64 GB
ECC Support
- Intel Core i7-1255U
- No
- Intel Core i7-1260P
- No
Integrated Graphics
- Intel Core i7-1255U
- Yes
- Intel Core i7-1260P
- Yes
iGPU Model
- Intel Core i7-1255U
- Intel Iris Xe Graphics
- Intel Core i7-1260P
- Intel Iris Xe Graphics
iGPU Compute Units
- Intel Core i7-1255U
- 96
- Intel Core i7-1260P
- 96
PCIe Generation
- Intel Core i7-1255U
- PCIe 4.0
- Intel Core i7-1260P
- PCIe 4.0
PCIe Lanes
- Intel Core i7-1255U
- 10-17%
- Intel Core i7-1260P
- 12
Retail Availability
- Intel Core i7-1255U
- Soldered Only
- Intel Core i7-1260P
- Soldered Only
Benchmarks
- General CPU
Cinebench R23 (Multi-Core)
- Intel Core i7-1255U
- 7,758-30%
- Intel Core i7-1260P
- 11,159Best
Renders a 3D scene on every core. Shows speed in rendering and other heavy work.
Which one should you pick?
Choose 1255U if you want the higher memory channels (2 vs 2).
Choose 1260P if you want the higher L3 cache (18 MB vs 12 MB), the higher PCIe lanes (12 vs 10) and the higher cinebench R23 (Multi-Core) (11,159 vs 7,758).
Verdict
Intel Core i7-1255U
7.7 / 10 Expert Rating
The Intel Core i7-1255U prioritizes battery life and portability, fitting thin business and everyday laptops rather than performance-first designs.
Intel Core i7-1260P
8 / 10 Expert Rating
The Intel Core i7-1260P balances performance and efficiency, a solid pick for mainstream thin-and-light laptops.