CPU Comparison
Intel Core i5-10400H vs Intel Core i7-10510U
A side-by-side comparison of specs, performance and value. 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 Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
4 cores hold it back in heavy multi-threaded productivity apps.
Snappy performance for office applications and heavy multitasking.
Gaming
Performs slightly better than 10300H due to higher clocks, good for 1080p.
Only suitable for very light or older games due to basic UHD integrated graphics.
Virtualization
Basic VM support, but limited by core count.
Capable of running light virtual machines but limited by 4 cores.
Efficiency
Standard 14nm mobile efficiency, gets warm under load.
14nm process is less efficient than newer 10nm alternatives.
Specialized Performance
AI / ML
- No dedicated AI hardware.
- CPU-based inference is basic.
- Lacks dedicated AI acceleration hardware
- Relies on CPU-based inference
Content Creation
Gaming
- 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.
- Relies on Intel UHD Graphics
- Can run esports titles on low settings
- Not recommended for AAA gaming
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Higher clock speeds than 10300H
- Good single-core performance
- Supports DDR4-2933
- Reliable for eSports and older AAA games
Cons
- Still only 4 cores
- Soldered and non-upgradable
- 14nm process is not power efficient
- Outclassed by AMD Ryzen 5 4600H
Pros
- Strong single-core boost clocks
- Good for everyday productivity
- Supports Wi-Fi 6 CNVi
- Proven 14nm reliability
Cons
- Outdated 14nm process
- Basic integrated graphics
- End-of-life status
- Lower IPC than Ice Lake
Competitors & Alternatives
Intel Core i5-10400H
- AMD Ryzen 5 4600HRival
Mobile Mainstream
- Compare head-to-headIntel Core i5-10300HRival
Mobile Mainstream
- Intel Core i7-10750HRival
Mobile High-End
- AMD Ryzen 7 4800HRival
Mobile High-End
- Intel Core i5-9300HRival
Previous Gen Mobile
- Intel Core i5-11400HAlt
Better IPC and architecture.
- AMD Ryzen 5 5600HAlt
Much faster and more efficient.
Modern hybrid architecture.
Compare head-to-head
Intel Core i7-10510U
- AMD Ryzen 7 3750URival
Mobile
- AMD Ryzen 7 4700URival
Mobile
- Intel Core i7-8665URival
Mobile
- Compare head-to-headIntel Core i5-10210URival
Mobile
- AMD Ryzen 5 3500URival
Mobile
Better graphics and newer 10nm architecture.
Compare head-to-head- AMD Ryzen 7 4800UAlt
Significantly better multi-core performance.
11th Gen improvements in efficiency and IPC.
Compare head-to-head- Alt
Vastly superior efficiency and performance.
Compare head-to-head - Intel Core i7-1165G7Alt
Better overall performance and Xe graphics.
Our Verdict on Each
A solid 4-core mobile CPU with slightly higher clocks than the 10300H, providing a small bump in performance for mainstream gaming laptops.
Best for: Buying a used mid-range gaming laptop at a discount.
Read the full reviewA dependable 14nm quad-core CPU that delivers strong single-core bursts for everyday tasks, though it lags behind newer architectures in efficiency and multi-threaded workloads.
Best for: For users considering a laptop powered by the Intel Core i7-10510U in the modern era, the primary appeal lies in the budget and refurbished markets. It is not recommended for new purchases, as newer processors offer significantly better efficiency and performance. However, if found at a steep discount, it remains a solid choice for students, office workers, and casual users who need a reliable machine for web browsing, document editing, and media consumption. Avoid this processor if your workflow involves heavy video editing, 3D rendering, or modern gaming, as its aging 14nm architecture and UHD integrated graphics lack the horsepower for demanding creative workloads or smooth frame rates.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-10400H or Intel Core i7-10510U?
Based on our editorial ratings, the Intel Core i7-10510U comes out ahead with a score of 7.5/10. 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 i5-10400H or Intel Core i7-10510U?
For gaming, the Intel Core i5-10400H leads with a gaming performance score of 72/100 among Intel Core i5-10400H and Intel Core i7-10510U.
Which uses less power?
The Intel Core i7-10510U has the lowest rated TDP. Power draw across these chips: Intel Core i5-10400H (45 W), Intel Core i7-10510U (25 W).
Do Intel Core i5-10400H and Intel Core i7-10510U use the same socket?
No. They use different sockets (Intel Core i5-10400H: BGA 1440, Intel Core i7-10510U: Intel BGA 1440), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i5-10400H posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-10400H (9,500). Benchmark figures are approximate and workload-dependent.