wattaire
Apple
20W
C
20W USB-C Power Adapter
Apple · A2347
vs
Samsung
25W
C
25W Power Adapter (Super Fast Charging)
Samsung · EP-T2510
The short version
Apple does not publish how it divides power between ports, so a like-for-like comparison stops there.
Samsung is the cheaper watt: 0.33 €/W against 0.40 €/W.
Size, true to scale
front and side, one scale
20
size not published
not published
— · weight not published
38×22×67 mm
56 cm³ · 52 g

Solid block is the face you see in the socket; the outline next to it is depth.

Power by situation
bars share one scale · 25 W
One device, best port
20 W
25 W
What a laptop gets when nothing else is plugged in.
Two devices at once
not published
not published
The best published pair, which is rarely an even split.
Three devices at once
not enough ports
not enough ports
Everything plugged in together.

Port layouts differ, so we compare what you would do with the charger, not port pairs. Each row takes the best published combination for that situation.

Field by field
Apple
Samsung
Total output
20 W
25 W
Ports
1×C
1×C
Volume
smaller is better
not published
56 cm³
Weight
smaller is better
not published
52 g
Power density
—
0.45 W/cm³
PPS
No
Yes
EPR
over 100 W
No
No
Folding plug
No
No
Price per watt
net of VAT
0.34 €/W
0.28 €/W
Documentation
8.0/10
8.8/10

marks the better value in that row. Ties, missing data and class differences get no mark.

Offers
EUR · incl. 19% VAT
€7.99
Geizhals
See at retailer
€8.31
Geizhals
See at retailer
Apple 20W USB-C Power Adapter vs Samsung 25W Power Adapter (Super Fast Charging) — size, per-port power and price · wattaire