Consumercarts is reader-supported. Learn more
Intel Core Ultra 5 245HX vs Intel Core Ultra 7 255HX: Comparison
Core Ultra 5 245HX vs Core Ultra 7 255HX: the total cores difference
Expect a near tie. The closest thing to a difference is total cores, Core Ultra 5 245HX 14 against Core Ultra 7 255HX 20. Add l3 cache to that, 24 MB on the Core Ultra 5 245HX versus 30 MB on the Core Ultra 7 255HX, and the pattern holds. There is a split on socket as well, FCBGA2114 on the Core Ultra 5 245HX versus BGA 2114 on the Core Ultra 7 255HX.
Core Ultra 5 245HX vs Core Ultra 7 255HX: which one fits your build
The Core Ultra 5 245HX is the one to take for high-end gaming laptops and mobile content creation, though it is the wrong buy for thin-and-light laptops and battery-life-focused use. The Core Ultra 7 255HX suits high-end gaming laptops and mobile content creation, though it is not built for thin-and-light laptops and battery-life-focused use. Our rating of the Core Ultra 5 245HX (8.8/10): the Intel Core Ultra 5 245HX brings desktop-class core counts to a mobile package, suited to high-end gaming and creator laptops that can handle the higher TDP. Our rating of the Core Ultra 7 255HX (8.8/10): the Intel Core Ultra 7 255HX brings desktop-class core counts to a mobile package, suited to high-end gaming and creator laptops that can handle the higher TDP.
Where the two are identical
Where they agree, they agree completely, tdp, integrated graphics, form factor, release year and market segment included, so the decision does not turn on any of those. They match on 6 further specifications as well.
Frequently asked questions
Do the Core Ultra 5 245HX and Core Ultra 7 255HX differ on performance cores?
Yes. Performance Cores reads 6 on the Core Ultra 5 245HX versus 8 on the Core Ultra 7 255HX.
Is the Microarchitecture the same on the Core Ultra 5 245HX and Core Ultra 7 255HX?
It is. Both are listed at Arrow Lake-HX, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- Intel Core Ultra 5 245HX
- Laptop
- Intel Core Ultra 7 255HX
- Laptop
Codename
- Intel Core Ultra 5 245HX
- Arrow Lake
- Intel Core Ultra 7 255HX
- Arrow Lake
Release Year
- Intel Core Ultra 5 245HX
- 2025
- Intel Core Ultra 7 255HX
- 2025
TDP
- Intel Core Ultra 5 245HX
- 55 W
- Intel Core Ultra 7 255HX
- 55 W
iGPU
- Intel Core Ultra 5 245HX
- Intel Graphics
- Intel Core Ultra 7 255HX
- Intel Graphics (Xe-LPG, reduced EU count)
Market Segment
- Intel Core Ultra 5 245HX
- Laptop
- Intel Core Ultra 7 255HX
- Laptop
Microarchitecture
- Intel Core Ultra 5 245HX
- Arrow Lake-HX
- Intel Core Ultra 7 255HX
- Arrow Lake-HX
Socket
- Intel Core Ultra 5 245HX
- FCBGA2114
- Intel Core Ultra 7 255HX
- BGA 2114 (BGA, soldered)
Process Node
- Intel Core Ultra 5 245HX
- 3 nm
- Intel Core Ultra 7 255HX
- 3 nm
Total Cores
- Intel Core Ultra 5 245HX
- 14
- Intel Core Ultra 7 255HX
- 20Best
Performance Cores
- Intel Core Ultra 5 245HX
- 6
- Intel Core Ultra 7 255HX
- 8Best
Efficiency Cores
- Intel Core Ultra 5 245HX
- 8
- Intel Core Ultra 7 255HX
- 12Best
Total Threads
- Intel Core Ultra 5 245HX
- 14
- Intel Core Ultra 7 255HX
- 20Best
SMT Enabled
- Intel Core Ultra 5 245HX
- No
- Intel Core Ultra 7 255HX
- No
P-Core Base Clock
- Intel Core Ultra 5 245HX
- 3.1 GHz
- Intel Core Ultra 7 255HX
- 2.4 GHz
P-Core Boost Clock
- Intel Core Ultra 5 245HX
- 5.1 GHz
- Intel Core Ultra 7 255HX
- 5.2 GHz
L3 Cache
- Intel Core Ultra 5 245HX
- 24 MB-20%
- Intel Core Ultra 7 255HX
- 30 MBBest
Base Power
- Intel Core Ultra 5 245HX
- 55 W
- Intel Core Ultra 7 255HX
- 55 W
Max Turbo Power
- Intel Core Ultra 5 245HX
- 160 W
- Intel Core Ultra 7 255HX
- 160 W
Memory Type
- Intel Core Ultra 5 245HX
- DDR5
- Intel Core Ultra 7 255HX
- DDR5
Integrated Graphics
- Intel Core Ultra 5 245HX
- Yes
- Intel Core Ultra 7 255HX
- Yes
NPU Peak TOPS
- Intel Core Ultra 5 245HX
- 13 TOPS (NPU 3)
- Intel Core Ultra 7 255HX
- 13 TOPS (NPU 3)
Which one should you pick?
Choose 245HX if you already have it on hand or find it at a lower price.
Choose 255HX if you want the higher L3 cache (30 MB vs 24 MB).
Verdict
Intel Core Ultra 5 245HX
8.8 / 10 Expert Rating
The Intel Core Ultra 5 245HX brings desktop-class core counts to a mobile package, suited to high-end gaming and creator laptops that can handle the higher TDP.
Intel Core Ultra 7 255HX
8.8 / 10 Expert Rating
The Intel Core Ultra 7 255HX brings desktop-class core counts to a mobile package, suited to high-end gaming and creator laptops that can handle the higher TDP.
More comparisons in Processors (CPUs)
- Intel Core Ultra 7 255HX vs Intel Core Ultra 7 265HX
- Intel Core Ultra 7 165H vs Intel Core Ultra 7 255HX
- Intel Core Ultra 7 255HX vs Intel Core Ultra 9 285H
- Intel Core Ultra 5 245HX vs Intel Core Ultra 7 155H
- Intel Core Ultra 7 255HX vs Intel Core Ultra 7 266V
- Intel Core Ultra 5 245HX vs Intel Core Ultra 7 165H