Compare models
Spec
HP ProBook 640 G2
HP ProBook 6550b
Summary
LB Score
29
★
18
Value
35
★
13
Price
$145
$127
★
Use class
Budget Surf
Budget Surf
Screen
Diagonal
14
15.6
Resolution
1366x768
1366x768
Panel type
tn
tn
Brightness
220 nits
—
Screen quality
45
45
Processor & graphics
CPU score
22
★
10
GPU type
iGPU
dGPU
GPU score
0
0
GPU rating
—
—
Memory
RAM (max)
32 GB
★
16 GB
RAM type
DDR4
DDR3
Storage
Storage (bus)
—
—
Battery
Capacity (Wh)
48.0 Wh
55.0 Wh
★
Autonomy (est.)
4.2 h
★
1.9 h
Chassis
Weight
2.11 kg
★
2.50 kg
Type
Business
Business
Release year
2015
★
2010
Verdict
Best overall: HP ProBook 640 G2 · wins 18 of 24 parameter rows
Why HP ProBook 640 G2 over HP ProBook 6550b
- Market popularity: 0.17 vs 0.00 (+0.2)
- Engineering CAD: 19 vs 4 (+15)
- Mobility: 39 vs 12 (+27)
Is the $17 premium worth it?
Over 2 years, HP ProBook 640 G2 costs ≈ $0.2/mo more to own than HP ProBook 6550b — extra depreciation $0.2/mo plus $0.1/mo the $17 premium could earn at 4.21%/yr (US Treasury 3-month bill, as of Nov 3, 2026).