IBM PS/VP 433DX/Si

| Type | 6381-MY0 |
| Serial | GZ5500AY3HR |
| Manufacturer | IBM corp. United Kingdom Ltd. |
| Date | March 1994 |
Physical description
| Type | Desktop (29 MAR 1994 print on top cover) |
| Dimensions (HxWxD) | 128 x 360 x 464 mm |
| Weigth | Approx. 8,1 Kg. |
| Drive bays | 2 x 3.5" (1 internal), 1 x 5.25" half-height |
| Power supply | 100W, 100-125/200-240 V, manual voltage switch (WK 38/94) REPLACEMENT |
Main board
| BIOS | IBM (rev. L9ET40AIT), 21 Apr. 1994 |
| Chipset | SiS |
| Processor | Intel 80486DX-33 MHz (32-bit), PGA |
| Coprocessor | Integrated on 486DX |
| Memory | 4 sockets for 70ns or 80ns 72-pin SIMMs |
| Std memory | One 4 Mb SIMM |
| Max on system board | 64 Mb (4 x 16 Mb) |
| External cache | 0 Kb (exp. to 128 or 256 Kb), write-through, 15ns |
| Bus | ISA 16-bit |
| Expansion slots | 3 x 16-bit ISA (on riser card), all available |
| Interface | IDE/ATA (2 units), FDD (2 units) |
| Video | Integrated Tseng Labs ET4000-W32 super-VGA display adapter (chip 9413) w. 1 Mb of memory (orig. had 512 Kb) UPGRADE |
| Ports | PS/2 keyboard, PS/2 mouse, 2 serial (UART 16550A), parallel, VGA |
Cards
| Installed RAM | 4 x 4 Mb 70ns SIMMs (9453, 9370, 9510, 03-05-96) ADDITION |
| Audio | Sound Blaster 16 Value (chip CT1745A, 18-94) w. CD-ROM interface ADDITION |
| Ethernet | SMC 8216C (3395) ADDITION |
Storage
| Diskette drive | 1.44 Mb, 3.5" slim (unk.) |
| Hard disk | Western Digital WDAC-1210 (210 Mb), IDE/ATA, 3.5" slim (24 JAN 94) UPGRADE (*) |
| CD-ROM | Matsushita-Panasonic CR-562-B, propr. interface (double-speed, DECEMBER 1993) ADDITION |
Trivia
| Acquisition | Sept. 99, paid a few $ together w. some other appliances |
| Condition | Good, but not working |
| Installed O.S. | None |
| Repairs/modifications | Replaced power supply, added ethernet and audio cards, CD-ROM drive, all memory SIMMs |
| Current status | All hw working |
| Current O.S. | MS-DOS 6.22, MS Windows 3.1 (Italian) |
| Spare parts | Drives, accessories |
Notes
(*) According to submodel number (-MY0), this system unit originally had a 120 Mb HDD unit. Most other 486DX-33-based 6381 models have a 212 Mb HDD.
Peripherals: KEYBOARDS, MONITORS, MICES, PRINTERS