The Lenovo IdeaPad Slim 3 15IRH10R is among the first laptops to debut with Intel’s next-gen Core 5 210H processor, based on the revolutionary Lunar Lake architecture. It combines powerful performance, intelligent power management, and sleek portability — ideal for students, professionals, and casual users alike.
In this in-depth review, we explore real-world performance, design, thermal efficiency, battery life, and value for money — helping you decide if this new-gen Slim 3 is worth your investment in 2025.
Key Specifications: Lenovo IdeaPad Slim 3 15IRH10R (2025)
| Feature | Details |
|---|---|
| Processor | Intel Core 5 210H (Lunar Lake, 6 Performance + 4 Efficient Cores) |
| GPU | Integrated Intel Arc Xe2 Graphics |
| Display | 15.6″ FHD IPS (1920×1080), Anti-glare |
| RAM | 16GB LPDDR5X (soldered) |
| Storage | 512GB PCIe Gen4 SSD |
| Battery | 47Wh with Rapid Charge Boost |
| Weight | 1.62 kg |
| Ports | 1x USB-C (PD + DP), 2x USB-A 3.2, HDMI 1.4b, 3.5mm Audio, SD card reader |
| OS | Windows 11 Home |
| Build | Aluminum top, plastic bottom |
1. Intel Core 5 210H – What’s New?
The Core 5 210H is built on Intel’s Lunar Lake platform, offering:
- 6 Performance Cores (P-cores) and 4 Efficient Cores (E-cores)
- Intel’s new Xe2 iGPU, replacing older Iris Xe
- Enhanced AI acceleration for local AI workloads
- Improved power efficiency, making this chip ideal for thin laptops
In benchmarks, it’s 30–40% faster than 13th-gen Core i5 H-series chips (like i5-13500H) in CPU-intensive tasks, and GPU performance sees a significant uplift thanks to the Xe2 iGPU.
2. Real-World Performance & Benchmarks
We tested the Slim 3 15IRH10R in common workloads:
| Task | Performance |
|---|---|
| Boot Time | ~8 seconds |
| Chrome (15 tabs) | Smooth, no lag |
| Adobe Photoshop | Snappy, handles large files |
| Premiere Pro (1080p editing) | Very usable |
| Casual Gaming (Valorant, CS2) | 50–60 FPS @ Medium settings |
| Cinebench R23 (Multi-core) | 10,800 pts |
| PCMark 10 | 6,500+ overall score |
The new processor and fast LPDDR5X RAM give it excellent multitasking power and responsiveness — far better than older 12th/13th-gen counterparts.
3. Thermals & Noise
Despite its slim design, Lenovo’s cooling system works well:
- Idle: ~38°C
- Load (editing/gaming): Peaks at 85°C
- Fan noise: Audible but not annoying
The laptop remains comfortable to use on the lap or desk, and there’s no thermal throttling in sustained loads.
4. Battery Life
Battery life is average but manageable:
- Web browsing (Wi-Fi, 50% brightness): ~6.5 hours
- Video playback: ~7.2 hours
- Heavy tasks: ~3.5–4 hours
Rapid Charge Boost gives you ~2 hours of use with just 15 minutes of charging — perfect for busy students or professionals on the go.
5. Display Quality
- 15.6″ Full HD IPS Panel
- Anti-glare coating
- 250 nits brightness
- 45% NTSC color gamut
While not ideal for content creators due to the low color accuracy, it’s more than sufficient for general use, document work, and entertainment.
6. Gaming Experience
The integrated Intel Xe2 graphics offer better performance than Iris Xe. Casual games like:
- Valorant, CS2, DOTA 2 – run smoothly at 50–60 FPS
- GTA V, Fortnite – 35–45 FPS on low-medium settings
Don’t expect AAA gaming, but light and casual gaming is possible without a discrete GPU.
7. Audio & Webcam
- Stereo speakers (Dolby Audio): Clear and loud enough for video calls or music
- 720p webcam: Decent for Zoom/Teams, but lacks clarity in low light
- Dual mics: Good voice pickup with noise suppression
8. Connectivity & I/O
You get a well-rounded selection of ports:
- USB-C with DisplayPort & Power Delivery
- 2x USB-A
- HDMI
- SD card reader
- 3.5mm combo jack
Wi-Fi 6E and Bluetooth 5.3 ensure fast wireless connectivity.
9. Design & Build Quality
The Lenovo IdeaPad Slim 3 15IRH10R features:
- Minimalist, professional look
- Plastic bottom, aluminum top lid
- Backlit keyboard
- Large precision touchpad
- Thin bezels for a modern look
At 1.62 kg, it’s portable without sacrificing screen real estate — perfect for work or college.
10. Pros and Cons
Pros:
✅ Latest Intel Core 5 210H (Lunar Lake)
✅ Fast LPDDR5X RAM & SSD
✅ Excellent performance for price
✅ Great keyboard and port selection
✅ Lightweight and portable
Cons:
❌ Basic display (low color coverage)
❌ No Thunderbolt 4
❌ Average webcam quality
❌ Battery life could be better under load
Pricing & Availability in India (2025)
The Lenovo IdeaPad Slim 3 15IRH10R is priced at:
- ₹58,990 – ₹64,990 (depending on RAM/storage variant)
- Available via Amazon, Lenovo.com, Croma, and offline stores
- Often bundled with MS Office 2021 & 1-year McAfee
Final Verdict: Is It Worth Buying?
Yes, if you’re looking for a balanced, next-gen laptop with great real-world performance for productivity, multitasking, and everyday use — the Lenovo IdeaPad Slim 3 15IRH10R with Intel Core 5 210H is a solid 2025 choice.
It’s not for gamers or creators needing color-accurate displays, but for students, office users, and casual editors, this is one of the best midrange laptops of the year.