CompatChart
What fits what — by model number, not by guesswork.
| Sections | Latest |
|---|---|
| RAM & StorageWhich module fits a given laptop, and the ceiling it will actually use. | 1 |
| Printer InkCartridge numbers by printer model, and which ones cross over. | 1 |
| Screens & SizesReal inches, resolution, and viewing distance by model. | 65 |
| Chargers & PowerWattage a device draws and what a smaller brick costs you. | 1 |
- Screen Size in Inches: A Diagonal, Which Is Why Two 14-Inch Laptops Differ by 8% in Area
A 14-inch 3:2 display has 8% more area than a 14-inch 16:9 one. The diagonal is identical, and it is the only number anyone prints.
- What RAM Fits My Laptop? Four Things Decide It, and One of Them Is Whether You Can Upgrade at All
Before the specification questions there is a yes-or-no question. A large share of thin laptops sold since 2020 have memory soldered to the board, and no module fits those at all.
- What Wattage Charger for My Laptop? Match the Original, and Check the Cable Too
A lower-wattage charger does not usually damage anything. It charges slowly, or during heavy work it fails to charge at all while the battery quietly drains.
- Which Ink Cartridge Fits My Printer? The Number Belongs to the Series, Not the Brand
Cartridge families are tied to a printer series, and the difference between a standard and an XL of the same number is ink volume, not chemistry.
TV size by viewing distance and resolution
64 calculations · Screens & Sizes · browse all