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Macintosh Quadra 840AV

M9020 · 1993–1994 · tower

Specifications

Cpu: Motorola 68040 40 MHz (integrated FPU) + AT&T DSP3210 66.7 MHz digital signal processor
Gpu: Onboard AV video with dual frame buffers, 1 MB VRAM (2 MB max via 4×256 KB VRAM SIMMs)
Ram: max: 128 MB (4×32 MB 72-pin SIMM, 60 ns) · base: 8 MB
Ports: NuBus slots ×3 · DB-15 video (onboard) · S-Video in/out + composite (RCA) video in/out · GeoPort serial ×2 (up to 115 kbps, replaces standard Mac serial) · ADB · SCSI (DB-25) · Ethernet (AAUI-15) · Microphone in (PlainTalk) · Audio out (16-bit 48 kHz stereo)
Display: None built in; onboard video with dual frame buffers (1 MB VRAM, 2 MB max) drives 512×384 up to 1152×870 and shows live video in a scalable window
Storage: base: 230 MB SCSI HDD · options: 500 MB SCSI HDD · 1 GB SCSI HDD · Optional 2X CD-ROM · 1.44 MB floppy
Os Support: latest: Mac OS 8.1 · shipped: System 7.1

Revisions

CD-ROM configsSeveral order numbers bundled a 2X CD-ROM

Storage

230MB HDD

500MB HDD

1GB HDD

RAM

128 MB (4×32 MB 72-pin SIMM) · Four standard 72-pin slots, 60 ns.

~$30-$60 for period 72-pin SIMMs

EASY

storage

Internal SCSI drives or solid-state emulators (SCSI2SD, BlueSCSI)

EASY

display

2 MB VRAM for deeper color; NuBus video cards for extra displays

EASY