| 本体orMB | PC-9821Xa7/C4 | PC-9821An/U2 | ABit BH6 |
| ChipSet | VLSI WildCat | Intel | Intel 440BX |
| CPU | P55C 166MHz | P54C 90MHz | Celeron 300A |
| Memory | 96MB | 48MB | 128MB |
| Sound 1 | 内蔵WSS | 内蔵86B | Gravis UltraSound PnP PRO (8MB搭載済) |
| Sound 2 | NEC PC-9801-118 | Speak Board(SPB) | Sound Blaster Live! Value |
| Sound 3 | なし | Sound Blaster16 | 取り外し中 |
| MIDI I/F | Roland S-MPU | HW-98MIDI-II | (MPU-401互換) |
| 外付け音源 | Roland SC-88Pro | Roland SC-88無印 | ← |
| HDD | IBM DCAS34330
IBM DCAS34330 |
IBM DPES31080
IBM DPES31080 |
WD Caviar21600
WD Caviar21200 WD Caviar24330 |
| MO | Olympus MOS331
富士通M2511 |
Olympus MOS331
富士通M2512 Fスロット内蔵 |
なし |
| CD-ROM | Pioneer DR-U12X | SONY CDU-561 | 東芝XM-5602B |
| LAN | なし | I/O DATA
LA/T-98SB |
Intel EtherExpressPro |
| モニター | ICM RS-A770N
(TOTOKU CV174らしい) |
NANAO E55D | ← |
| モデム | Microcore MC288XLII | Microcore MC288XLII | ← |
| video | CANOPUS
PWDX/4MC |
CANOPUS
PW964LB NE(4MB) (I/O DATA GA-98NBII) |
MATROX Mystique G200 |
| ビデオキャプチャ | ↑ | I/O DATA GV-98X | AVer TV Phone |
| SCSI | AHA-2940U | SC-98IIIP
(PC-9821A-E10) |
AHA-2940U(バルク) |
| PC-FX/GA | Ready | Ready | 取り外し中 |
| OS | DOS6.2+WIN95 | DOS5.0A+WIN3.1+WIN95
FreeBSD(98)2.2.7 |
PC-DOS7.0+WIN95+
FreeBSD2.2.8 |
| その他 | CD R 松下CW-7502 | I/O拡張Unit | YY-1240
Full Tower |
その他
Alps MD-4000J (Printer & scaner)
Canon BJC-620 (Printer)
GVC SP-801 (Sound Card)
#9 Imagine128 II (Video Card)
IOI-4203U (SCSI Host Adapter)
Object XrossKey AT/98 model 1 (Keyboard Selecter)