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Apricot EPx Product Datasheet

Expandable Power Desktop Systems for those who need to push the limits

System Overview
Features & Benefits
Standard Features
Technical Specifications

  • Processor Range from Intel DX2-66 to Intel Pentium™-90
  • EISA 32-bit Expansion Technology
  • Multiple Storage Device Bays
  • High Power Local Bus Video Acceleration with 2MB VRAM
  • Choice of Fast Access Hard Drives
  • High Resolution Low Radiation Monitors
  • Up to 256MB RAM Expansion
  • IBM Compatible
  • UK Built

Apricot reserves the right to alter specifications without prior notice.

The information contained in these specifications was correct at the time of compilation.
May 11th, 1995

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System Overview

The Apricot EPx has been designed for the power user. Within the sturdy moulded casing of this formidable desktop system is a high performance infrastructure coupled with the expansion capacity to keep in step with your changing needs - whatever they may be.

The start of Something Big

The EPx is a fully fledged EISA-based system with eight 32-bit expansion slots. Two slots also feature VL Local Bus extensions to ensure compatibility with some of the fastest video option boards available. Future growth in mass storage is accommodated by three half-height 5.25" bays as well as two half-height 3.5" bays. A power supply offering up to 200 watts of power keeps the expansion potential well fed.

The Heart of the Matter

The EPx is available with three powerful processor options, each with 256KB of external cache, while the unique modular system makes processor upgrades easy from the entry level Intel 486DX2-66 through Pentium-60 up to the last word in desktop performance, the Pentium-90. Memory capacity matches the processing power. The 486 model is supplied with 4MB, while the Pentium models are both available with either 8 or 16MB from a possible 128MB. All systems are upgradeable to 256MB.

Storage Selection

To match even the largest desktop storage needs, the EPx is available with a choice of high speed drives, ranging in size from 270MB up to 540MB.

What You See...

The choice of 14" or 17" low emission monitors are driven by the Mach ATI controller which exploits to the full its local bus connection with the processor. To ensure top performance from the beginning, all variants include a complete 2MB of video RAM

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Features & Benefits

Range of High Power Processors

This heavy-weight performance range is offered with a choice of three processors beginning with the Intel 486DX2-66. Next on the list is the Intel Pentium running at 60MHz and topping the range is the Pentium-90. All processor options are upgradeable to keep pace with your changing requirements.

Expandable Cache

All models are supplied with 256KB secondary cache as standard and, like most of the features of the EPx, this too can be expanded further as required. Using industry-standard SRAM memory chips, the cache of the EPx can be increased to 1MB to provide full assistance to the processor.

EISA and VL Local Bus Expansion

With eight EISA 32-bit expansion slots, the EPx is ready and waiting to be customised into a multitude of high performance roles. Each slot is capable of accommodating not only EISA expansion boards, but also standard ISA options. The inclusion of two VL Local Bus extensions means that the EPx is also fully compatible with the large line-up of fast industry-standard video controllers.

Triple 5.25" and Dual 3.5" Drive Bays

By providing copious storage bay space the EPx offers massive expansion potential. The three 5.25" bays are located at the front of the system with knock-out panels for removable media. Each of the bays can be used for separate devices such as CD-ROMs or tape streamers or, if necessary, two bays can be used in conjunction for one large device.

High capacity, high speed hard drives

A full range of hard drive options permits the storage capacity to be tailored to meet all requirements.

200 Watt Power Supply

The heavy duty power supply ensures that there is more than sufficient support for the variety of peripherals and storage options that are likely to be fitted into the EPx.

Video acceleration

The stunning video performance of the EPx models is made possible by the use of accelerated local bus video processors. Using the 32-bit local bus to couple each video accelerator to the main system processor ensures that even the most graphically intensive applications move like lightening.

High resolution 14", 15" and 17" Monitors

Each EPx is supplied with a choice of high resolution monitors that perfectly match the fast graphic capabilities of the systems. All monitor options meet and exceed the latest European standards for safety and emissions.

Dedicated mouse port

A PS/2-compatible port is fitted specifically for use by the supplied mouse. This means that both serial ports are free for use by other devices.


By adhering to the latest computer industry standards, Apricot engineers have ensured that the EPx can be easily upgraded with widely available components and peripherals.

Built in the UK by Apricot

Confidence in the design, build quality and reliability of the EPx is well founded. The BS5750 accredited Apricot research and development labs and factory in Scotland have been building quality into every computer system for more than twelve years.

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Standard Features

Mass Storage

1.44MB floppy drive
Selection of high speed IDE hard drives


Local Bus Enhanced VGA graphics
2MB Video RAM
Maximum resolution 1280 x 1024
Maximum colours 16.8 million


Six full-length EISA 32-bit expansion slots
One half-length EISA 32-bit expansion slot
Two VL Local Bus 32-bit slot extensions
Two RS232 serial ports
One bi-directional parallel port
One PS/2 compatible mouse port


14", 15" or 17" low radiation monitors
Enhanced layout keyboard
Microsoft mouse

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Technical Specifications

EPx 486DX2-66 EPx 560 EPx 590
Type Intel 486DX2 Intel Pentium™ Intel Pentium™
Clock speed (Internal) 66MHz 60MHz 90MHz
Clock speed (External) 33MHz 60MHz 60MHz
Internal cache 8KB 2 x 8KB 2 x 8KB
Coprocessor Integral Integral Integral
Data / address bus 32-bits 64/32-bits 64/32-bits
CPU socket type 238-pin LIF 273-pin LIF 320-pin ZIF (Type 5)
iCOMP benchmark 297 510 735
Core logic chipset Opti 82C696 Opti 82C696 Opti 82C696


External Cache
EPx 486DX2-66 EPx 560 EPx 590
Supplied 256KB 256KB 256KB
Maximum 1MB 1MB 1MB
Mapping Direct Direct Direct
Writing scheme Write back Write back Write back
Cache speed 15ns 15ns 15ns


EPx 486DX2-66 EPx 560 EPx 590
Supplied 4MB 8 or 16MB 8 or 16MB
Maximum 256MB 256MB 256MB
Type 36-bit SIMM 36-bit SIMM 36-bit SIMM
Speed 70ns 70ns 70ns
Fitted RAM location SIMM Sockets SIMM Sockets SIMM Sockets
Parity Checked Checked Checked
Sockets: total 4 4 8
free 3 2/0 6/4
Sizes supported: bank 0-3 4, 16 & 64MB 2,4,8,16,32 & 64MB 2, 4, 8, 16 & 32MB
bank0 & bank1 2, 8, & 32MB 2,4,8,16,32 & 64MB 2, 4, 8, 16 & 32MB


EPx 486DX2-66 EPx 560 EPx 590
Size 128KB 128KB 128Kb
Type Flash ROM Flash ROM Flash ROM
Shadowable Yes Yes Yes


EPx 486DX2-66 EPx 560 EPx 590
Controller ATI Mach 32 68800 ATI Mach 32 68800 ATI Mach 32 68800
Interface VL Local Bus VL Local Bus VL Local Bus
Location Expansion board Expansion board Expansion board
Video memory: supplied 2MB 2MB 2MB
Max non-interlaced resolution 1280x1024 (256 colours) 1280x1024 (256 colours) 1280x1024 (256 colours)
Max non-interlaced colours 16.8 million (800x600) 16.8 million (800x600) 16.8 million (800x600)


Available expansion
EPx 486DX2-66 EPx 560 EPx 590
Slots: EISA 32-bit full length 6 5 5
EISA 32-bit half length 1 2 0
VL Local Bus extensions 1 1 1
3.5" x 1" high enclosed drive bays 1 1 1
5.25" half height removable media drive bays 3 3 3


I/O Ports
EPx 486DX2-66 EPx 560 EPx 590
Serial: quantity 2 2 2
connectors 1x9-pin, 1x25-pin D-SUB 1x9-pin, 1x25-pin D-SUB 1x9-pin, 1 x 25-pin D-SUB
Parallel: quantity 1 1 1
type Bi-directional Bi-directional Bi-directional
IDE controller
ATA IDE standard Mode 2 Mode 2 Mode 2
Connector type 40-pin 40-pin 40-pin
Max data transfer 4MB/s 4MB/s 4MB/s
Keyboard type PS/2 PS/2 PS/2
Mouse type PS/2 PS/2 PS/2


Power supply
EPx 486DX2-66 EPx 560 EPx 590
Rating (constant) 200W 200W 200W
Rating (peak) 224W 224W 224W
Type Switched mode Switched mode Switched mode
Voltage setting External switch External switch External switch
Voltage input range (AC) 100-120V & 200-240V 100-120V & 200-240V 100-120V & 200-240V
Frequency input range 47-63Hz 47-63Hz 47-63Hz
3.5" internal cables 1 (0 free) 1 (0 free) 1 (0 free)
5.25" internal cables 3 (2 free) 3 (2 free) 3 (2 free)
Maximum loads: +5V 22A 22A 22A
+12V 7A 7A 7A
-5V 0.3A 0.3A 0.3A
-12V 0.3A 0.3A 0.3A
External connectors IEC in IEC in IEC in


Floppy Drive
EPx 486DX2-66 EPx 560 EPx 590
Type / Capacity 3.5" / 1.44MB 3.5" / 1.44MB 3.5" / 1.44MB
Controller Embedded Embedded Embedded


All Model Details

Hard Drives 270MB 540MB
Average Access 14ms 12ms
Track to track seek 5ms 4ms
Burst data rate 4.5MB/sec 5.8MB/sec
Cache 128KB 128KB
MTBF 300 000 poh 300 000 poh
System Dimensions
Width x depth x height 432 x 417 x 155mm
Weight 8.6Kg
Standard cover 12 months on-site (subject to registration fee)
Preloaded Software
Operating System DOS 6.22 and Windows for Workgroups 3.11 (UK mainland only)
Drivers Graphic display drivers for Windows for Workgroups 3.11, OS/2, AutoCAD, AutoSHADE, Word 5.x and WordPerfect 5.1.
Temp. (operating) +10 to +35 C
Temp. (non-op.) -10 to +60 C
R. humidity (operat'g) 20 to 80%
R. humidity (non-op) 20 to 80%
EMI/RFI approvals EN 55022 Limit B, VDE 0871 VFG 243 Limit B
Safety approvals EN 60-950
Monitors 14" SVGAe 14" EVGAe 15" EVGAe 17" EVGAe
CRT size (diagonal) 14" 14" 15" 17"
CRT type FST anti-glare FST anti-glare Super Fine Trinitron
FST dynamic focus, anti-glare/static
Display area 245 x 183 (+/- 3mm) 260 x 190 (+/- 3mm) 270 x 202 (+/- 2mm) 290 x 218 (+/- 8mm)
Dot pitch 0.28mm 0.28mm 0.26mm 0.28mm
Phosphor P22 P22 P22 P22
Video input Analogue RGB Analogue RGB Analogue RGB Analogue RGB
Max video bandwidth 44.9MHz 85MHz 107MHz 130MHz
Max resolution (non-interlaced) 800 x 600 1024 x 768 1280x1024 x 60Hz
1024x768 x 75Hz
1600 x 1200
Power: full operation Less than 80W Less than 85W 110W maximum 130W maximum
standby Less than 30W Less than 30W 8W maximum Less than 10W
Power management VESA DPMS support for EPA compliance VESA DPMS support for EPA compliance VESA DPMS support for EPA compliance VESA DPMS support for EPA compliance
EMI/RFI approvals EN 55022 Limit B
VDE 0871 Vfg 243 Limit B, MPRII
EN 55022 Limit B
VDE 0871 Vfg 243 Limit B, MPRII
CE mark compliant
EN 55022 Limit B
VDE 0871 Vfg 243 Limit B, MPRII
Safety approvals EN60-950 EN60-950 EN60-950 EN60-950
Dimensions: wxdxh 351 x 384 x 327mm 361 x 382 x 345mm 368 x 385 x 373mm 411 x 480 x 380mm
weight 11.5Kg 12Kg 13.7Kg 23Kg
Input Devices Keyboard Mouse
Keys / buttons 102 2
Interface PS/2 PS/2
Resolution N/A 400dpi
Cable length 3m 1.83m
Dimensions: wxdxh 488 x 205 x 40mm 63 x 114 x 40mm
weight 1.4Kg 127g

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