TOPIC
DISCUSSION Upgradable Microprocessor ------------------------- * PowerPC 604 microprocessor running at 120 MHz, upgradable to 250 MHz processor when available * Integrated floating-point unit, 32K cache, and three integer units * High-speed system bus (up to 50 MHz) Memory ------ * RAM: 16 MB of RAM, expandable to 512 MB via 8 DIMM sockets (Note: There is no RAM soldered to the logic board. The DIMM sizes installed at the factory will vary according to availability; there will be either two 8 MB DIMMs or one 16 MB DIMM. If you are installing more RAM, the DIMMs should be 64-bit-wide, 168-pin fast-paged mode, with 70-ns RAM access times or faster.) * Standard Level 2 (L2) Cache: 256K L2 cache on a 160-pin DIMM (Theoretical support for up to 4 MB of L2 cache.) * VRAM: DIMMs must be 32-bit-wide, 112-pin fast-paged mode with 70ns RAM access time or faster. Do not use the 256 K or 512 K VRAM SIMMs used in older Macintosh computers * 4 MB of ROM Disk Drives ----------- * Internal 1 GB or 2 GB Fast SCSI hard disk * Internal Apple SuperDrive floppy disk drive - Accepts high-density 1.4 MB disks and 800K disks - Reads, writes, and formats Macintosh, Windows, MS-DOS, OS/2, and ProDOS disks * Internal AppleCD 600i quadruple-speed CD-ROM drive * Expansion bay for additional 3.5-inch hard disk Interfaces ---------- * Three PCI expansion slots compatible with PCI 2.0-compliant cards (Note: These slots are not NuBus-compatible) * Two high-speed DMA serial (RS-232/RS-422) ports compatible with LocalTalk and GeoPort cables * 10Base-T and AAUI-15 Ethernet connectors * Internal Fast SCSI bus (up to 10 MB/s) * External SCSI bus (up to 5 MB/s) * Apple Desktop Bus (ADB) expansion port * RCA phono jacks for line-level stereo audio input and output * Mini jacks for stereo audio input and output * All sound ports support 16-bit audio and up to 44.1-kHz sampling rate * DB-15 connector for monitor * Composite connectors (RCA phono jacks) for composite video input and output * S-video input and output connectors * Internal digital audio/video (DAV) connector for video compression/decompression cards Audio System ------------ * Custom sound circuitry, including stereo generator (digital-to-analog converter, or DAC)-capable of driving stereo miniplug headphones or audio equipment-and stereo sampling hardware (analog-to-digital converter, or ADC) for recording stereo sound * 16-bit stereo input and output * Sample rates of 44.1 and 22.05 kilohertz (kHz) * Sound input connector line level: 2.8 volts peak-to-peak (Vpp) nominal, into 3.0-kilohm (k¢) impedance (minimum) * RCA-type input connector line level: 2.4 Vpp nominal, into 13.5-k¢ impedance (minimum) * Sound output connector line level: 2.7 Vpp nominal, into 32-k¢ impedance * RCA-type output connector level: 2.9 Vpp nominal into 2-k¢ impedance (minimum) * Sound input signal-to-noise ratio (SNR): >83 decibels (dB) A-weighted with no audible discrete tones * RCA-type input SNR: >77 dB A-weighted with no audible discrete tones * Sound output SNR: >84 dB A-weighted with no audible discrete tones * RCA-type output SNR: >84 dB A-weighted with no audible discrete tones * Bandwidth: 10 Hz to 18 kHz (+0.1 dB, -3.0 dB) at 44.1-kHz sample rate * RCA-type input total harmonic distortion plus noise (THD + N): less than 0.018 percent A-weighted; measured 10 Hz to 30 kHz with a 2.4-Vpp sine wave input Video Input/Output Subsystem ---------------------------- * 24-bit video input - Real-time video playthrough of up to 640 by 480 pixels with NTSC; 768 by 576 pixels with PAL and SECAM - Up to 320- by 240-pixel capture at 25 frames per second with NTSC (with 2 GB drive) - Maximum capture size of 640 by 480 pixels with NTSC * 24-bit video output - Support for NTSC and PAL - Convolution for flicker reduction at all bit depths Graphics Support ---------------- * 2 MB of VRAM, expandable to 4 MB * Fast 64-bit data path to VRAM * Support for display resolutions of up to 1,280 by 1,024 pixels * 24-bit color up to 1,152- by 870-pixel resolution * Refresh rate of up to 75 Hz GeoPort Telephony* ------------------ * 14.4-Kbit/s modem support * V.17 fax support * GeoPort Fax and GeoPort Telephony software included * Speakerphone and answering-machine capability * Note: Requires GeoPort Telecom Adapter Clock/Calendar -------------- * Custom integrated circuit with long-life battery Keyboard And Mouse ------------------ * Supports ADB keyboards with numeric keypads * Comes with an ADB Mouse II Electrical Requirements And Compliance -------------------------------------- * Line voltage: 100 to 240 V AC, RMS single phase, automatically configured * Frequency: 50 to 60 Hz, single phase * Power: 225 W maximum, not including display ADB Power Requirements ---------------------- * Maximum current draw for all devices: 500 mA (a maximum of three ADB devices is recommended) * Mouse draws 10 mA * Keyboard draws 25 to 80 mA (varies with keyboard used) Size And Weight --------------- * Height: 14 in. (35.6 cm) * Width: 7.7 in. (19.6 cm) * Depth: 15.75 in. (40.0 cm) * Weight: 25 lb. (11.3 kg) Operating Environment --------------------- * Operating temperature: 50 degrees to 104 degrees F (10 degrees to 40 degrees C) * Storage temperature: -40 degrees to 116 degrees F (-40 degrees to 47 degrees C) * Relative humidity: 5% to 95% noncondensing * Maximum altitude: 10,000 ft. (3,048 m) Article Change History: 18 Sep 1996 - Updated speed of processor card support. 17 Sep 1996 - Clarified energy information. 12 Jul 1996 - Modified title. |
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| Document Information | |
| Product Area: | Computers |
| Category: | Power Macintosh |
| Sub Category: | Power Macintosh 8500 |
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