Quick Verdict
A solid 4-core mobile CPU with slightly higher clocks than the 10300H, providing a small bump in performance for mainstream gaming laptops.
Overview
Launch
2020
Status
ActiveGeneration
10th Generation (Comet Lake-H)
Market
Mobile
The Intel Core i5-10400H is a 10th generation mobile processor tailored for mainstream gaming laptops and portable workstations. Launched in April 2020, it belongs to the Comet Lake-H family and is built on Intel's 14nm process. It features 4 cores and 8 threads, delivering reliable multi-threaded performance for its segment. The base clock speed is 2.6 GHz, which can boost up to 4.6 GHz under load, offering strong single-core performance for gaming. With a 45W TDP, it strikes a balance between power and thermal output, fitting well in mid-range laptop designs. It includes 6 MB of Intel Smart Cache and supports dual-channel DDR4 memory up to 2933 MT/s. Like other H-series chips, it includes basic integrated graphics but is intended to be paired with a dedicated GPU. Its 16 PCIe 3.0 lanes ensure sufficient bandwidth for mobile graphics and fast storage solutions.
The Intel Core i5-10400H is a 10th Gen Comet Lake mobile CPU designed for gaming laptops. Featuring 4 cores and 8 threads, it boosts up to 4.6 GHz for solid single-core gaming performance.
With a 45W TDP, it balances power and heat effectively. It supports DDR4-2933 and 16 PCIe 3.0 lanes.
While it competes well in single-core tasks, its 4-core design trails behind 6-core AMD alternatives in multi-threaded workloads. It is best suited for budget to mid-range gaming systems.
Specifications
Performance
4 cores hold it back in heavy multi-threaded productivity apps.
Basic VM support, but limited by core count.
Performs slightly better than 10300H due to higher clocks, good for 1080p.
Standard 14nm mobile efficiency, gets warm under load.
- •Higher clock speeds give a slight edge over the 10300H.
- •Good pairing for GTX 1660 Ti or RTX 2060 mobile.
- •Bottlenecks can occur in modern CPU-heavy games.
- •No dedicated AI hardware.
- •CPU-based inference is basic.
Architecture
14nm
Process Node
Comet Lake-H
Codename
4C / 8T
Core Config
6 MB
L3 Cache
45 W
TDP
Architecture Overview
The Core i5-10400H is built on the Comet Lake-H architecture, an iteration of Skylake optimized for mobile performance. Manufactured on the 14nm node, it features 4 cores and 8 threads, utilizing Intel's Hyper-Threading technology.
CPU Design
The design employs a ring bus architecture, facilitating low-latency data transfers between the cores and the 6 MB L3 Smart Cache. It is a monolithic die optimized for the mobile 45W envelope.
Memory Subsystem
The integrated memory controller supports dual-channel DDR4 memory up to 2933 MT/s, alongside legacy DDR3 support. This ensures adequate bandwidth for the CPU and integrated graphics.
PCIe & I/O
It incorporates basic Intel UHD Graphics, sufficient for display out and media tasks, though gaming relies on discrete GPUs. The processor offers 16 PCIe 3.0 lanes for direct CPU-to-GPU communication.
Overclocking
Packaged in a BGA 1440 format, it is permanently soldered to laptop motherboards, optimizing space and thermals within the 45W TDP envelope to sustain high clock speeds during intense gaming sessions. It is not unlocked.
- Higher boost clocks (4.6 GHz vs 4.3 GHz)
- Improved memory support
- Better thermal algorithms
Key Highlights
- Higher clock speeds than 10300H
- Good single-core performance
- Supports DDR4-2933
- Reliable for eSports and older AAA games
- Still only 4 cores
- Soldered and non-upgradable
- 14nm process is not power efficient
- Outclassed by AMD Ryzen 5 4600H
History
The Core i5-10400H debuted in April 2020 as a step up from the base 10300H, offering slightly higher clock speeds for mainstream gaming laptops.</br>It launched during a critical transition in the laptop market, as AMD's Ryzen 4000 mobile processors began to challenge Intel's dominance.</br>The 10400H was widely adopted in mid-range gaming laptops, providing a solid 4-core/8-thread foundation for 1080p gaming.
</br>While it couldn't match the multi-core capabilities of AMD's 6-core Ryzen 5 4600H, it maintained competitive single-core speeds that benefited gaming frame rates.</br>This processor helped Intel maintain a foothold in the budget to mid-range laptop segment.</br>It represents the mature endpoint of Intel's 14nm mobile architecture before the company shifted focus to newer architectures like Tiger Lake and Alder Lake.
Improvements over Previous Generation
- Higher boost clocks (4.6 GHz vs 4.3 GHz)
- Improved memory support
- Better thermal algorithms
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Buying a used mid-range gaming laptop at a discount.
Avoid if…
- Purchasing a new laptop (look for 12th Gen or Ryzen 6000)
- You need 6+ cores for content creation
- Battery life is critical
Use Cases
Interesting Facts
It launched in April 2020, slightly earlier than the 10300H.
It is a 45W part, typical for mobile gaming processors.
It is soldered to the motherboard via BGA 1440.
It supports both DDR4 and DDR3 memory controllers.
The processor has 6 MB of L3 cache.
It features 16 PCIe 3.0 lanes for mobile GPUs.
It was commonly paired with GTX 1650 and 1660 Ti mobile GPUs.
It maxes out at 8 threads, which is standard for older mobile i5s.
It is essentially a slightly faster 10300H.
It lacks Thunderbolt 4 support, relying on older USB standards.
People Also Ask
Is Intel Core i5-10400H still good in 2024?
It is okay for budget gaming, but shows its age in modern titles.
Can the i5-10400H run Windows 11?
Yes, though not officially supported.
What is the difference between i5-10400H and i5-10300H?
The 10400H has slightly higher base and boost clocks.
Is the i5-10400H better than Ryzen 5 4600H?
No, the Ryzen offers better multi-core performance.
Can I upgrade the i5-10400H?
No, it is soldered to the motherboard.
Does the i5-10400H support DDR5?
No, it uses DDR4.
How much cache does the i5-10400H have?
6 MB of L3 Smart Cache.
What does the 'H' stand for in i5-10400H?
High Performance Graphics (45W mobile).
Can it handle streaming?
It can handle light streaming, but a dedicated GPU is recommended.
What is the base clock of the i5-10400H?
2.6 GHz.
Frequently Asked Questions
Is the Core i5-10400H good for gaming?
Yes, it is solid for budget 1080p gaming.
How many cores does the i5-10400H have?
4 cores and 8 threads.
What is the max turbo boost of the i5-10400H?
Up to 4.6 GHz.
Can you overclock the i5-10400H?
No, it is locked.
What is the TDP of the i5-10400H?
45W.
Does the i5-10400H have integrated graphics?
Yes, Intel UHD Graphics.
What socket does the i5-10400H use?
BGA 1440.
What RAM does it support?
DDR4 up to 2933 MT/s.
Is the i5-10400H better than the i5-10300H?
Slightly, due to higher clock speeds.
Does it support PCIe 4.0?
No, only PCIe 3.0.