Compare models
Spec
Dell Precision 3551
Dell Precision 7520
Fit for your profile
58 ★
48
Summary
LB Score
60
★
52
Value
70
★
64
Price
$385
$288
★
Use class
Mid Gaming
Mid Gaming
Screen
Diagonal
15.6
15.6
Resolution
1920x1080
1920x1080
Panel type
ips
ips
Brightness
—
—
Screen quality
50
50
Processor & graphics
CPU score
62
★
49
GPU type
dGPU
dGPU
GPU score
29
34
★
GPU rating
6%
—
Memory
RAM (max)
64 GB
★
32 GB
RAM type
DDR4
DDR4
Storage
Storage (bus)
—
—
Battery
Capacity (Wh)
68.0 Wh
68.0 Wh
Autonomy (est.)
2.4 h
2.4 h
Chassis
Weight
1.80 kg
★
2.80 kg
Type
Workstation
Workstation
Release year
2019
★
2017
Verdict
Best overall: Dell Precision 3551 · wins 18 of 26 parameter rows
Why Dell Precision 3551 over Dell Precision 7520
- Photo/Design: 82 vs 26 (+56)
- Mobility: 39 vs 13 (+26)
- Portability: 46 vs 20 (+26)
Is the $97 premium worth it?
Over 2 years, Dell Precision 3551 costs ≈ $1.8/mo more to own than Dell Precision 7520 — extra depreciation $1.5/mo plus $0.3/mo the $97 premium could earn at 4.16%/yr (US Treasury 3-month bill, as of Oct 30, 2026).