CPU Comparison
Core i5-1245U vs Core i5-1345U
A side-by-side comparison of specs, performance and value. The Intel Core i5-1245U is a mobile processor designed for thin-and-light laptops, offering a balanced approach to everyday computing. As part of the Alder Lake-U family, it features 10 cores and 12 threads, utilizing a hybrid architecture of 2 Performance-cores and 8 Efficient-cores. This design allows it to handle bursty workloads efficiently while maintaining excellent battery life. Unlike its sibling, the 1235U, the 1245U steps up the base clock speed to 1.6 GHz on its P-cores, offering slightly snappier response times in everyday tasks. With a 15W base TDP and the ability to boost up to 55W for short bursts, it adapts dynamically to thermal conditions. Integrated Iris Xe graphics with 80 Execution Units handle light gaming and media decoding with ease. This chip is a solid choice for professionals needing reliable performance in a portable form factor.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Excellent for office apps, heavy browsing, and light coding.
Snappy for everyday office apps, web, and light coding.
Gaming
Good for casual and older titles at 1080p low settings.
Can run older or e-sports titles at low settings via Iris Xe, but not suited for modern AAA games.
Virtualization
Can handle light VMs, but memory bandwidth is a limit.
Can handle light VMs for development, but limited by memory and core allocation.
Efficiency
Dynamic power management ensures excellent battery life.
Outstanding power efficiency for all-day battery life in ultrabooks.
Specialized Performance
AI / ML
- Intel GNA 3.0 for background AI tasks
- No dedicated NPU
- Basic AI inferencing on CPU/GPU
Content Creation
Gaming
- Can run eSports titles at 60fps
- Shares system memory, so RAM speed affects FPS
- Depends heavily on RAM configuration
- Suitable for e-sports at 1080p
- Not a replacement for discrete GPU
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent balance of performance and 15W power draw
- 10 cores for heavy multitasking
- Supports fast DDR5 memory
- Strong single-core performance for an ultrabook chip
- Good integrated graphics
Cons
- Not suitable for heavy gaming
- Locked multiplier
- Soldered to motherboard
- Can run warm under sustained all-core loads
Pros
- 10-core hybrid design
- Low 15W base power
- Iris Xe 80EU graphics
- DDR5 support
- Good single-core boost
Cons
- Limited sustained performance
- Not for gaming
- BGA socket limits upgrades
- Only 8 PCIe 4.0 lanes
- E-cores lack AVX-512
Competitors & Alternatives
Core i5-1245U
- AMD Ryzen 5 5625URival
Mobile
- AMD Ryzen 7 5825URival
Mobile
- Compare head-to-headIntel Core i7-1255URival
Mobile
- Compare head-to-headIntel Core i5-1235URival
Mobile
- Compare head-to-headApple M1Rival
Mobile
Better graphics and slightly higher clocks for premium ultrabooks.
Compare head-to-headMore P-cores for better sustained performance.
Compare head-to-head- Intel Core i5-1230UAlt
Lower TDP variant for ultimate portability.
Budget alternative for basic office tasks.
Compare head-to-head
Core i5-1345U
- AMD Ryzen 5 7530URival
Mobile
- AMD Ryzen 5 7535URival
Mobile
- Compare head-to-headApple M2Rival
Mobile
- Intel Core i5-1335URival
Mobile
- Qualcomm Snapdragon 8cx Gen 3Rival
Mobile
- Intel Core i7-1355UAlt
Better graphics and higher clocks for slightly more money.
- AMD Ryzen 7 7730UAlt
Strong multi-core performance in the same power envelope.
- Apple MacBook Air M1Alt
Better efficiency and integrated graphics if not tied to Windows.
- AMD Ryzen 5 7640UAlt
Newer Zen 4 architecture with RDNA 3 graphics.
Our Verdict on Each
A highly efficient U-series processor that hits the sweet spot for everyday productivity and portable computing.
Best for: Mainstream thin-and-light laptops
Read the full reviewA solid 13th-gen mobile chip offering great battery life and enough burst speed for daily tasks, though not meant for heavy workloads.
Best for: Buying a thin-and-light laptop for school or office work.
Read the full reviewFrequently Asked Questions
Which is better, Core i5-1245U or Core i5-1345U?
Based on our editorial ratings, the Core i5-1245U 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, Core i5-1245U or Core i5-1345U?
For gaming, the Core i5-1345U leads with a gaming performance score of 65/100 among Core i5-1245U and Core i5-1345U.
Do Core i5-1245U and Core i5-1345U use the same socket?
Yes — all of these CPUs use the Intel BGA 1744 socket, so they share compatible motherboards.
Which is faster in multi-core benchmarks?
The Core i5-1345U posts the highest multi-core benchmark score. Multi-core results: Core i5-1245U (0), Core i5-1345U (9,600). Benchmark figures are approximate and workload-dependent.