Quick Verdict
A highly efficient 15W processor that delivers excellent everyday responsiveness and battery life, making it a staple for premium ultrabooks.
Overview
Launch
2022
Status
ActiveGeneration
12th Generation
Market
Mobile
The Intel Core i7-1265U is a 15W mobile processor offering a balanced 10-core hybrid architecture for standard premium ultrabooks.
The Intel Core i7-1265U is tailored for the standard 15W ultrabook class. It features 10 cores and 12 threads, boosting up to 4.8 GHz for snappy single-thread performance.
With a 15W base TDP and 55W turbo, it offers a great middle ground between the 9W extreme portables and 28W performance ultrabooks. It supports both standard and LPDDR memory, making it highly versatile for OEMs.
Specifications
Performance
Extremely responsive for daily tasks, with enough E-cores to handle background downloads and syncs seamlessly.
Capable of light VM work for development, but limited by the 2 P-cores under heavy loads.
Can handle esports titles at 1080p medium settings, but thermal limits in thin laptops will cause throttling.
Excellent idle efficiency and low-power state management provide all-day battery life.
- •Iris Xe 96EU provides decent 1080p low-setting performance
- •Thermal throttling is common in thin chassis
- •Not a replacement for a discrete GPU
- •CPU and GPU handle AI inference
- •No dedicated NPU
Architecture
10 nm
Process Node
Alder Lake-U
Codename
10C / 12T
Core Config
12 MB
L3 Cache
55 W
TDP
Architecture Overview
Alder Lake-U scales down the hybrid architecture to 10 cores (2P+8E) optimized for the 15W envelope.
CPU Design
The 2 Golden Cove P-cores boost to 4.8 GHz for burst performance, while 8 Gracemont E-cores manage multitasking efficiently.
Memory Subsystem
Uniquely supports both standard SO-DIMM (DDR4/DDR5) and soldered LPDDR (LPDDR4X/5) memory types.
PCIe & I/O
Includes 20 PCIe 4.0 lanes for direct CPU storage and peripheral connectivity.
Overclocking
Locked multiplier; power delivery is controlled via OEM dynamic tuning.
- Doubled the core count via E-cores
- Added DDR5 and LPDDR5 support
- Improved power efficiency at 15W
Key Highlights
- Excellent performance-per-watt ratio
- Supports a wide variety of memory standards
- High 4.8 GHz single-core boost
- 20 PCIe 4.0 lanes for fast storage
- Strong Iris Xe 96EU integrated graphics
- Only 2 P-cores limit heavy multi-threaded tasks
- Soldered BGA 1744 package
- Throttles quickly under sustained 55W turbo loads
- Not suitable for high-end gaming
History
The Core i7-1265U launched as the premium 15W option for business and consumer ultrabooks. It effectively replaced the highly popular 11th Gen i7-1185G7, bringing double the core count via the inclusion of 8 E-cores. This generation marked a turning point for the standard U-series, transforming it from a strictly basic-office part into a highly capable multitasking engine.
</br>Intel designed the 1265U to be the ultimate flexible silicon. By supporting both traditional SO-DIMM memory and low-power soldered LPDDR memory, it allowed a single chip to be used in budget-friendly laptops and ultra-premium feather-light designs alike. It became one of the most common processors in the 2022-2023 ultrabook market, powering everything from Dell XPS machines to Lenovo ThinkPads, cementing the 15W hybrid design as the industry standard.
Improvements over Previous Generation
- Doubled the core count via E-cores
- Added DDR5 and LPDDR5 support
- Improved power efficiency at 15W
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Purchasing a premium ultrabook where battery life and daily responsiveness are the main goals.
Avoid if…
- You need to run heavy multi-threaded rendering
- You plan to play demanding games
- You want an upgradeable laptop (CPU is soldered)
Use Cases
Interesting Facts
The Core i7-1265U supports four different types of memory (DDR4, DDR5, LPDDR4X, LPDDR5).
It has a base TDP of 15W and a max turbo of 55W.
The specific part number is SRLFN.
It uses the Intel BGA 1744 socket.
The base clock is 1800 MHz.
The E-cores run at a base frequency of 1300 MHz.
It was released on February 23rd, 2022.
The L3 cache is 12 MB.
The base multiplier is 18.0x.
The integrated graphics max out at 1250 MHz.
People Also Ask
What is the TDP of the Intel Core i7-1265U?
The base TDP is 15 watts, and the maximum turbo power is 55 watts.
Is the i7-1265U good for gaming?
It is okay for light 1080p gaming on low settings, but it is not designed for heavy gaming.
What is the difference between i7-1265U and i7-1255U?
The i7-1265U has slightly higher clock speeds (4.8 GHz vs 4.7 GHz boost) and may have vPro features.
Does the Core i7-1265U support DDR5?
Yes, it supports DDR5-4800, as well as DDR4, LPDDR4X, and LPDDR5.
How many cores does the i7-1265U have?
It has 10 cores: 2 Performance cores and 8 Efficient cores.
Can the i7-1265U be overclocked?
No, the multiplier is locked.
What socket does the i7-1265U use?
It uses the Intel BGA 1744 socket.
Does the i7-1265U have good battery life?
Yes, the 15W TDP and efficient E-cores provide excellent battery life in ultrabooks.
When was the i7-1265U released?
It was released on February 23rd, 2022.
Is the i7-1265U good for video editing?
It handles 1080p and light 4K editing well, but heavy 4K workloads will cause thermal throttling.
Frequently Asked Questions
Does the Core i7-1265U support ECC memory?
No, it does not support ECC memory.
What is the max turbo frequency of the i7-1265U?
The maximum turbo frequency is 4.8 GHz.
How much L3 cache does the i7-1265U have?
It has 12 MB of L3 cache.
What is the base clock of the i7-1265U E-cores?
The E-cores have a base clock of 1.3 GHz.
What PCIe version does the i7-1265U support?
It supports PCIe 4.0 with 20 lanes.
Does the i7-1265U support virtualization?
Yes, it supports VT-x and VT-d.
What is the part number for the i7-1265U?
The part number is SRLFN.
What is the maximum operating temperature of the i7-1265U?
The maximum junction temperature is 100°C.
What memory speeds does the i7-1265U support?
It supports DDR4-3200, DDR5-4800, LPDDR4X-4267, and LPDDR5-5200.
Is the i7-1265U good for programming?
Yes, it is excellent for standard programming and web development.