4820SX/T  (250-5140)              Features               Faxback Doc. #1662

The Tandy 4820 SX/T computer offers the functions of a personal computer, an
engineering workstation, or a network file server.

The Tandy 4820 SX/T has a 20 MHz i486SX microprocessor with 8KB of integrated
cache memory.

The Tandy 4833 LX/T has a 33 MHz i486DX microprocessor with an integrated 8KB
cache memory and FPU math functionality.

FEATURES

* 20 MHz i486SX microprocessor on Tandy 4820 SX/T

* 33 MHz i486SX microprocessor on Tandy 4833 LX/T

* Industry Standard Architecture (ISA) that ensures compatibility with the IBM 
  PC/XT/AT standard

* MS-DOS and OS/2 operating system compatibility

* 4MB of system memory, expandable to 64MB

* 8KB or 4-way set associative primary cache memory

* 1.44MB, 3 1/2" diskette drive

* on-board diskette drive controller that supports diskette capacities of up
  to 2.88MB

* on-board interface for two IDE hard disk drives

* VGA 1024 non-interlaced adapter, which provides high resolution Super VGA
  modes and backward compatibility with earlier video standards

* 101-key, enhanced keyboard

* two RS-232 serial ports

* on-chip FPU math functionality on 4833 LX/T

* seven 16-bit ISA expansion slots

* 300-watt power supply that automatically adjusts to 115 VAC or 230 VAC to
  match incoming voltage

* PS/2-style mouse port

* bidirectional parallel port

* hidden keylock for chassis, keyboard, and RESET button

OPTIONS

* SCSI host adapter for SCSI hard disk drives

* other ISA expansion adapters, including network, multimedia and modem
  adapters

* 3 1/2" diskette drives (720KB, 1.44MB, or 2.88MB capacity)

* 5 1/4" diskette drives (360KB or 1.2MB capacity)

* 3 1/2" or 5 1/4" SCSI, ESDI, IDE (SmartDrive), or ST-506 hard disk drives

* tape drives

* CPU upgrade for additional math functionality (Tandy 4820 SX/T only);
  contact a Tandy service center or consult the service manual for this
  computer for additional information

* memory upgrade kits containing 80ns or faster 256KB, 1MB, or 4MB SIMMs; can
  increase system memory to as much as 64MB

* upgrade kit for increasing video memory on video adapter from 512KB to 1MB