CPU Comparison
Intel Core i7-1255U vs Core i7-1355U
A side-by-side comparison of specs, performance and value. The Intel Core i7-1255U is a 15W mobile processor featuring a 10-core hybrid design, tailored for standard ultrabooks balancing performance and battery life.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Highly responsive for daily office tasks, with plenty of E-cores to keep background apps from slowing down the system.
Flawless performance for office suites, heavy browsing, and video calls.
Gaming
Can run esports games like League of Legends smoothly, but struggles with modern AAA titles on integrated graphics.
Handles esports titles and older games at 1080p medium settings reasonably well.
Virtualization
Good for light Docker containers, but 2 P-cores limit performance when running full Windows VMs.
Can run lightweight VMs, but limited by 15W thermal envelope.
Efficiency
Excellent power management ensures long battery life during typical office use.
Excellent idle power consumption and efficient multi-core scaling.
Specialized Performance
AI / ML
- No NPU
- AI workloads handled by CPU/GPU
- Uses CPU and integrated GPU for AI tasks
- Supports OpenVINO for optimized inference
- Suitable for background blur and noise cancellation
Content Creation
Gaming
- Iris Xe 96EU handles 1080p low settings for older games
- Throttles under sustained 3D loads
- Best paired with a discrete GPU for serious gaming
- Capable of 60fps in games like CS:GO and League of Legends
- Struggles with modern AAA titles
- Shares system memory, so DDR5 improves frame rates
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent performance-per-watt
- Very flexible memory support
- Good single-core burst performance
- Plenty of PCIe lanes for an ultrabook chip
- Reliable Iris Xe integrated graphics
Cons
- Only 2 P-cores limit heavy multi-threading
- Soldered to the motherboard
- Can get warm during 55W turbo bursts
- Not suitable for gaming without a discrete GPU
Pros
- Strong 5.0 GHz single-core burst
- Excellent power efficiency
- Iris Xe 96EU graphics
- Modern DDR5 and PCIe 4.0 support
- Great value for ultrabook performance
Cons
- Not unlocked
- Limited to 8 PCIe lanes from CPU
- Soldered to motherboard
- Throttles under sustained multi-core loads
- Only 2 P-cores limits heavy multitasking
Competitors & Alternatives
Intel Core i7-1255U
- AMD Ryzen 7 7730URival
Mobile
- AMD Ryzen 7 6800URival
Mobile
- Compare head-to-headApple M2Rival
Mobile
- AMD Ryzen 5 6600URival
Mobile
- Intel Core i7-1185G7Rival
Mobile
Offers slightly higher clock speeds (4.8 GHz) for marginally better burst performance.
Compare head-to-headA more cost-effective alternative that offers very similar everyday performance.
Compare head-to-headBetter sustained performance if you can accommodate the 28W TDP.
Compare head-to-head- AMD Ryzen 7 7735UAlt
Strong alternative with better integrated graphics efficiency.
- Intel Core i7-1355UAlt
The 13th Gen successor with refined efficiency and clock speeds.
Core i7-1355U
- AMD Ryzen 7 7730URival
Mobile
- AMD Ryzen 5 7530URival
Mobile
- Intel Core i7-1365URival
Mobile
- Compare head-to-headApple M2Rival
Mobile
- Intel Core i5-1345URival
Mobile
- Intel Core i5-1335UAlt
A more affordable option with slightly lower clocks but similar architecture.
- AMD Ryzen 7 7735UAlt
Better raw multi-core performance and efficiency in the same TDP class.
- Apple M1 AirAlt
Offers unmatched fanless efficiency and battery life for basic productivity.
Newer Meteor Lake chip with better idle battery life and integrated AI.
Compare head-to-head
Our Verdict on Each
A highly efficient and popular 15W processor that powers a vast majority of mid-range premium ultrabooks, offering great daily responsiveness.
Best for: Buying a standard ultrabook for school or office work where you need strong battery life and snappy daily performance.
Read the full reviewAn excellent mobile CPU that hits the sweet spot between price and performance for everyday ultrabook users.
Best for: Buying a mid-range premium ultrabook for school or office work
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i7-1255U or Core i7-1355U?
Based on our editorial ratings, the Core i7-1355U comes out ahead with a score of 8.6/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core i7-1255U or Core i7-1355U?
For gaming, the Core i7-1355U leads with a gaming performance score of 65/100 among Intel Core i7-1255U and Core i7-1355U.
Which uses less power?
The Core i7-1355U has the lowest rated TDP. Power draw across these chips: Intel Core i7-1255U (55 W), Core i7-1355U (15 W).
Do Intel Core i7-1255U and Core i7-1355U use the same socket?
Yes — all of these CPUs use the Intel BGA 1744 socket, so they share compatible motherboards.