Quick Verdict
A solid, efficient processor for everyday ultrabooks, offering good multitasking capabilities and decent battery life, though its NPU is modest.
Overview
Launch
Dec 14th, 2023
Status
ActiveGeneration
Ultra 5 (Meteor Lake)
Market
Mobile
The Intel Core Ultra 5 125U is a power-efficient mobile processor launched in December 2023 under the Meteor Lake architecture. Designed specifically for thin-and-light laptops where battery longevity is the primary concern, it operates at a low base TDP of 15W. The processor features a 12-core hybrid layout, comprising 2 P-cores, 8 E-cores, and 2 Low-Power E-cores (LP E-cores), resulting in 14 processing threads. Its base clock of 1.3 GHz is deliberately conservative, but it can dynamically boost up to 4.3 GHz when demanding tasks arise. Built using a combination of Intel’s 7nm process for the compute tile and TSMC’s nodes for the SOC and graphics tiles, it offers a balanced efficiency profile. The integrated Arc Xe-LPG graphics with 64 Execution Units handle everyday visual workloads, while an 11 TOPS NPU provides basic AI acceleration. This chip is tailored for everyday productivity, web browsing, and media consumption rather than heavy content creation.
The Core Ultra 5 125U is built on the Meteor Lake architecture, prioritizing battery life for everyday ultrabooks. It features 12 cores (2 P-cores, 8 E-cores, 2 LP E-cores) and 14 threads, boosting up to 4.3 GHz.
The 15W TDP ensures cool and quiet operation, making it ideal for fanless or thin designs. While its 64 EU Arc graphics and 11 TOPS NPU aren't built for heavy gaming or intense AI workloads, they comfortably handle hardware-accelerated media playback and basic background AI tasks. It is a reliable choice for office workers and students who need long battery life and smooth multitasking without the need for peak performance.
Specifications
Performance
Handles everyday office tasks and multitasking smoothly without overheating.
Can run basic VMs, but the 2 P-cores limit heavy virtualization performance.
Only suitable for very light or older games. Not recommended for modern AAA gaming.
Excellent efficiency with a 15W TDP, ensuring long battery life for ultraportables.
- •64 EU graphics are adequate for 2D and indie games
- •Can run older AAA titles at 720p low settings
- •Not designed for gaming enthusiasts
- •11 TOPS NPU is suitable for background blur and noise cancellation
- •Does not meet Copilot+ PC requirements
- •Handles lightweight inference tasks
Architecture
Intel 4 (7nm)
Process Node
Meteor Lake
Codename
12C / 14T
Core Config
12 MB
L3 Cache
15 W
TDP
Architecture Overview
The Core Ultra 5 125U leverages the disaggregated Meteor Lake architecture but is optimized for lower power envelopes compared to its "H" series siblings. The compute tile, built on Intel's 7nm (Intel 4) process, houses 2 "Redwood Cove" P-cores and 8 "Crestmont" E-cores. Only the P-cores support Hyper-Threading, yielding 14 total threads. The inclusion of 2 "Crestmont" LP E-cores on the TSMC-manufactured N6 SOC tile allows the processor to offload background tasks, significantly extending battery life during typical usage. The L3 cache is reduced to 12MB, reflecting its positioning below the 125H. Graphics are handled by the Arc Xe-LPG architecture with 64 EUs, providing adequate performance for hardware-accelerated video playback and casual gaming. Memory support includes DDR5 up to 5600 MT/s and LPDDR5x up to 7467 MT/s. The integrated NPU offers 11 TOPS of AI compute, designed to handle lightweight inference tasks efficiently without waking the main CPU tiles.
CPU Design
2 Redwood Cove P-cores, 8 Crestmont E-cores, and 2 LP E-cores.
Memory Subsystem
Supports DDR5 5600 MT/s and LPDDR5x 7467 MT/s.
PCIe & I/O
PCIe 4.0 lanes only, prioritizing cost and efficiency.
Overclocking
Locked multiplier.
- Disaggregated chiplet design for better efficiency
- Introduction of Arc Xe-LPG graphics
- First inclusion of an integrated NPU
- Addition of LP E-cores for ultra-low power states
Key Highlights
- Excellent 15W power efficiency
- Good multitasking for everyday apps
- Quiet and cool operation
- Includes 2 LP E-cores for background tasks
- Hardware media acceleration
- Limited to 2 P-cores for heavy lifting
- Only 64 EU graphics
- 11 TOPS NPU is relatively weak
- No PCIe 5.0 support
History
The Core Ultra 5 125U launched alongside the rest of the Meteor Lake lineup in December 2023, representing Intel’s commitment to the highly competitive 15W thin-and-light laptop segment. Historically, this power envelope has been dominated by Apple’s M-series chips and AMD’s U-series Ryzen processors. The 125U was introduced to offer a more efficient alternative to the 28W 125H, sacrificing peak multi-core performance and graphics capabilities to fit within stricter thermal limits.
Its release marked a significant evolution in Intel’s U-series naming convention, transitioning from standard Core i5 to the new Core Ultra 5 branding. The inclusion of the NPU, although modest at 11 TOPS, demonstrated Intel’s forward-looking strategy to integrate AI capabilities across all mobile segments, not just high-end models. The 125U served as a crucial volume driver for Intel in the mainstream laptop market, balancing the advanced Foveros packaging of Meteor Lake with the cost and power requirements of everyday ultrabooks.
Improvements over Previous Generation
- Disaggregated chiplet design for better efficiency
- Introduction of Arc Xe-LPG graphics
- First inclusion of an integrated NPU
- Addition of LP E-cores for ultra-low power states
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Everyday ultrabook for office work and student use
Avoid if…
- You need to play modern games
- You plan on doing heavy video editing
- You require Copilot+ PC features
Use Cases
Interesting Facts
The Core Ultra 5 125U drops the P-core count to 2, compared to 4 in the 125H, to save power.
Despite being a 15W chip, it can burst up to 57W for short periods to handle heavy single-threaded tasks.
It still includes the LP E-cores on the SOC tile, which are crucial for maintaining battery life during background tasks.
The integrated graphics are downgraded to 64 Execution Units, compared to 96 in the H-series.
It was launched as a direct successor to the 13th Gen Core i5 U-series processors.
The chip uses a multi-tile design, combining silicon from Intel and TSMC despite its low-power positioning.
The base clock of 1.3 GHz is incredibly low, designed to sip power during light workloads.
It supports fast LPDDR5x memory at 7467 MT/s, which helps compensate for the lower core count.
The 125U is one of the first low-power chips to feature a dedicated NPU for AI tasks.
It retains Hyper-Threading on its 2 P-cores, giving it 14 total threads to work with.
People Also Ask
Is the Core Ultra 5 125U better than the 125H?
It depends on your needs; the 125U is more power-efficient with better battery life, while the 125H offers significantly higher raw performance.
Can the Core Ultra 5 125U handle video editing?
It can handle basic 1080p video editing, but it will struggle with heavy 4K timelines.
Does the Core Ultra 5 125U support Copilot+ PCs?
No, its NPU only provides 11 TOPS, which is below the 40 TOPS requirement for Copilot+.
What is the base clock speed of the Core Ultra 5 125U?
The base clock speed is 1.3 GHz for the P-cores.
What socket does the Core Ultra 5 125U use?
It uses the Intel BGA 2049 socket, meaning it is soldered directly to the motherboard.
Does the Core Ultra 5 125U have dedicated AI hardware?
Yes, it includes a dedicated NPU for handling AI workloads efficiently.
What is the launch price of the Core Ultra 5 125U?
The launch price was $363 USD.
What type of memory does the Core Ultra 5 125U support?
It supports DDR5 at 5600 MT/s and LPDDR5x at 7467 MT/s.
Is the Core Ultra 5 125U fanless?
Laptops with this chip can often be designed with fanless cooling due to the low 15W TDP.
What is the maximum memory bandwidth of the Core Ultra 5 125U?
It supports up to 89.6 GB/s of memory bandwidth with dual-channel memory.
Frequently Asked Questions
What is the core count of the Core Ultra 5 125U?
It has 12 cores: 2 P-cores, 8 E-cores, and 2 Low-Power E-cores.
Does the Core Ultra 5 125U support Hyper-Threading?
Yes, the 2 P-cores support Hyper-Threading, resulting in 14 total threads.
What is the base and maximum TDP of the Core Ultra 5 125U?
It has a base TDP of 15W and a maximum power draw of 57W.
What is the maximum turbo frequency of the Core Ultra 5 125U?
The processor can reach a maximum turbo frequency of 4.3 GHz.
How many TOPS does the NPU in the Core Ultra 5 125U provide?
The integrated NPU provides 11 TOPS of AI acceleration.
What integrated graphics are included in the Core Ultra 5 125U?
It features Intel Arc Xe-LPG graphics with 64 Execution Units.
What is the L3 cache size of the Core Ultra 5 125U?
It has a 12 MB shared L3 cache.
Can I upgrade the RAM on a Core Ultra 5 125U laptop?
It depends on the laptop, as it supports both soldered LPDDR5x and traditional DDR5 DIMMs.
What manufacturing process is used for the Core Ultra 5 125U?
The compute tile uses Intel's 7nm process, while the SOC and graphics tiles use TSMC's 6nm and 5nm nodes.
Is the Core Ultra 5 125U good for gaming?
It is only suitable for very light or older games at low settings due to its 64 EU graphics and low power limit.