| PC-9821Na7/HC7 | Na7 | 7 |
| PC-9821Na7/H3 | 3 | |
| PC-9821Nx/C7 | Nx | 7 |
| PC-9821Nx/3 | 3 |
| Na7 | Nx | ||||
| 7 | 3 | 7 | 3 | ||
| CPU | Intel Pentium 75MHz | ● | ● | ||
| Intel DX4 75MHz | ● | ● | |||
| ROM | BIOS | ● | ● | ● | ● |
| N88-BASIC(86) 96KB | ● | ● | ● | ● | |
| 98NOTEメニュー 32KB | ● | ● | ● | ● | |
| RAM | 7.6MB | ● | ● | ● | ● |
| 最大 39.6MB まで搭載可能 | ● | ● | ● | ● | |
| VRAM | テキスト 12KB | ● | ● | ● | ● |
| グラフィック 512KB | ● | ● | ● | ● | |
| 液晶 | TFTカラー 10.4インチ | ● | ● | ||
| TFTカラー 10.1インチ | ● | ● | |||
| 表示能力 | 800 x 600 px (65536色) | ● | ● | ||
| 640 x 480 px (1677万色) | ● | ● | |||
| ビデオチップ | Trident Cyber9320 1MB | ● | ● | ● | ● |
| サウンド | FM音源+PCM | ● | ● | ● | ● |
| FDD | 3.5インチ・フロッピー (2HD) 1ドライブ | ● | ● | ● | ● |
| HDD | E-IDE 720MB | ● | ● | ||
| E-IDE 350MB | ● | ● | |||
| CD-ROM | 2倍速 | ● | ● | ||
| PCカード | PCMCIA 2.1 2ポート (TYPE II) | ● | ● | ● | ● |
| PCMCIA 2.1 1ポート (TYPE III) [TYPEIIと排他] | ● | ● | ● | ● | |
| OS | Microsoft Windows3.1 プリインストール | ● | ● | ● | ● |
| 価格 | 660,000円 | ● | |||
| 570,000円 | ● | ||||
| 560,000円 | ● | ||||
| 468,000円 | ● | ||||
