Dell Precision 3551 vs Lenovo Legion 9i
Head-to-head specifications
| Metric | Dell Precision 3551 | Lenovo Legion 9i | Difference |
|---|---|---|---|
| Geekbench 6 multi-core | 5,500 | 26,000 | -78.8% |
| Processor | Intel Core i5-10400H | Intel Core i9 (Panther Lake HX) | — |
| Graphics | Nvidia Quadro P620 | Nvidia RTX 5080 | — |
| Display | 15.6" 1920x1080 | 16.0" 3200x2000 | — |
| Battery life (h) | 10 | 4.5 | +122.2% |
| Weight (kg) | 1.89 | 2.50 | -24.4% |
| RAM / storage (base) | 8GB / 256GB | 32GB / 2048GB | — |
| Max configuration | 32GB / 1024GB | 64GB / 4096GB | — |
| Operating system | Windows 10 Pro | Windows 11 Home | — |
| Price (USD) | $1,299–$2,099 | $3,500–$4,300 | -62.9% |
- Lenovo Legion 9i is about 79% faster in Geekbench 6 multi-core. Dell Precision 3551 lasts longer on battery (10h vs 4.5h).
- Dell Precision 3551 is the more portable at 1.89 kg.
Verdict: Precision 3551 or Legion 9i?
Dell Precision 3551 advantages
- Battery life (+55%)
- Portability (+24%)
- Affordability (+63%)
Lenovo Legion 9i advantages
- Multi-core performance (+79%)
- Base memory (+75%)
Which should you choose?
- Choose the Dell Precision 3551 if long unplugged battery life is essential.
- Choose the Lenovo Legion 9i if you need maximum performance for demanding work or gaming.
- Choose the Dell Precision 3551 if you carry it around all day.
Value for money
Lenovo Legion 9i delivers more performance per dollar, making it the better value of the two at their listed prices.
Dell Precision 3551 vs Lenovo Legion 9i: which should you choose?
Dell Precision 3551 — Dell workstation laptop (2020) with the Intel Core i5-10400H and Nvidia Quadro P620, 8GB RAM, a 15.6-inch 1920x1080 display, 1.89 kg and about 10 h battery; from $1,299.
Lenovo Legion 9i — Lenovo gaming laptop (2026) with the Intel Core i9 (Panther Lake HX) and Nvidia RTX 5080, 32GB RAM, a 16-inch 3200x2000 display, 2.5 kg and about 4.5 h battery; from $3,499.99.
Dell Precision 3551 vs Lenovo Legion 9i: Lenovo Legion 9i is the faster laptop. Lenovo Legion 9i is about 79% faster in Geekbench 6 multi-core. Dell Precision 3551 lasts longer on battery (10h vs 4.5h). Dell Precision 3551 is the more portable at 1.89 kg.
Performance
The Lenovo Legion 9i is the faster machine in Geekbench 6 multi-core (26,000 vs 5,500), pairing the Intel Core i9 (Panther Lake HX) with Nvidia RTX 5080. That gap matters most for video editing, compiling, 3D and gaming; for browsing and office work both feel quick. Note these serve different roles — a workstation versus a gaming machine — so raw speed is only part of the story.
Portability and battery
The Dell Precision 3551 is easier to carry at 1.89 kg (vs 2.50 kg), and the Dell Precision 3551 lasts longer unplugged (about 10 h vs 4.5 h). For commuters and travellers these often matter more day-to-day than peak performance.
Configuration and value
Base configurations are 8 GB / 256 GB and 32 GB / 2048 GB, with higher-spec variants available. RAM, storage and display upgrades change both price and experience — compare like-for-like configurations and check current street pricing before buying.
The verdict
Both are credible choices in the laptop comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the Dell Precision 3551 better than the Lenovo Legion 9i?
Dell Precision 3551 takes the overall edge, though Lenovo Legion 9i wins in specific areas worth weighing. Lenovo Legion 9i is about 79% faster in Geekbench 6 multi-core. Dell Precision 3551 lasts longer on battery (10h vs 4.5h).
What is the main difference between the Dell Precision 3551 and the Lenovo Legion 9i?
Lenovo Legion 9i is about 79% faster in Geekbench 6 multi-core. Dell Precision 3551 lasts longer on battery (10h vs 4.5h). Dell Precision 3551 is the more portable at 1.89 kg.
Which is better value?
Lenovo Legion 9i delivers more performance per dollar, making it the better value of the two at their listed prices.
Which should I choose?
Choose the Dell Precision 3551 if long unplugged battery life is essential. Choose the Lenovo Legion 9i if you need maximum performance for demanding work or gaming.
Methodology
Laptops are compared on Geekbench 6 multi-core scores, processor and graphics hardware, display size and resolution, rated battery life, weight, RAM and storage across launch configurations, and list pricing (USD). Where a model spans several generations, the newest generation is shown. Battery figures are manufacturer or reviewer ratings under mixed use — sustained performance also depends on cooling, which benchmarks only partly capture.