Home computer
A modular AGA Amiga with a standard 68040 processor at 25 MHz, Chip memory shared with the custom chipset, and a CPU slot that later accepted 68060 accelerator cards.
A Commodore Amiga 4000 displayed with its keyboard at the PC Museum in Solothurn.
The A4000 moved the Amiga architecture into an expandable desktop case. Its stock processor module is a 68040. The CyberStorm configuration records a later accelerator that replaces that module with a 68060, so it belongs beside the standard configuration but is not presented as a Commodore shipping variant. The manual describes changeable Chip and Fast RAM rather than one fixed memory loadout.
| Component | Role | Count | Clock | Capacity |
|---|---|---|---|---|
| Motorola MC68040 | Main CPU | 1 | 25 MHz Nominal clock | — |
| Amiga AGA chipset (Alice, Lisa, Paula) | GPU | 1 | unknown Nominal clock | — |
| Amiga 4000 Chip memory | System memory | 1 | — | 2 MiB shared |
| Component | Role | Count | Clock | Capacity |
|---|---|---|---|---|
| Motorola MC68060 The CYBERSTORM card replaces the original processor module in the A4000 CPU slot. | Main CPU | 1 | 50 MHz Nominal clock | — |
| Amiga AGA chipset (Alice, Lisa, Paula) | GPU | 1 | unknown Nominal clock | — |
| Amiga 4000 Chip memory | System memory | 1 | — | 2 MiB shared |
provisional A figure marked provisional is recorded but not accepted: its evidence is unsettled. It may rely on one source, an unconfirmed announcement, or a digit read from a damaged scan. The reason appears under the figure. The catalog shows the figure but never uses it in a multiplier. How records are judged.
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Clock frequency cpu | 50 MHz | Confirmed | Vendor-rated | Nominal clock Stated by the vendor This is the synchronous 68060 configuration described in the CYBERSTORM manual. It is an accelerator replacement for the original processor module. | |
| Clock frequency cpu | 25 MHz | Confirmed | Vendor-rated | Nominal clock Stated by the vendor Commodore documents the standard processor module as a 68040-series part at this nominal clock. | |
| Peak FP32 rate cpu provisional | 8 MFLOP/s | Reported | Theoretical | Theoretical peak Published independently A contemporary report records Motorola's peak claim for the standard processor. It is a processor ceiling, not a measured Amiga application result. | |
| Memory capacity whole-system | 2 MiB | Confirmed | Derived | Design capacity Computed here from figures the vendor stated The selected two-MiB Chip-RAM configuration; CPU-only Fast RAM is excluded. Adds the selected 2 MiB Chip-memory configuration. Fast RAM remains outside the total because the manual gives it as a changeable range rather than one fixed A4000 loadout. |
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Clock frequency gpu | unknown The checked manuals state no separate AA chipset clock. | Not stated | Vendor-rated | Nominal clock Stated by the vendor The A4000 manual calls the graphics hardware an AA multichip coprocessor system and gives no separate operating clock. | |
| Memory bandwidth memory | unknown The checked manuals provide capacity and memory topology, not a transfer rate. | Not stated | Vendor-rated | Theoretical peak Stated by the vendor The manuals distinguish shared Chip RAM from CPU-only Fast RAM, but state no comparable memory transfer rate. | |
| Rated power consumption whole-system | unknown The checked manuals state no whole-system power rating. | Not stated | Vendor-rated | Rated power Stated by the vendor The checked manuals do not publish a whole-system electrical rating. |
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Memory capacity memory | 2 MiB | Confirmed | Vendor-rated | Design capacity Stated by the vendor The guide documents one- and two-MiB Chip RAM configurations. This record uses the two-MiB configuration, the maximum shared pool the motherboard supports, rather than folding its variable Fast RAM into one total. |
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a + b + … sum v1 Adds 1 memory-capacity figure obtained by design-capacity. Nothing in the catalog is left out of it. A total is only as trustworthy as the decision about what belongs in it, so both the terms and the exclusions are named records.
The manual calls the chipset AA, the name Commodore used for Advanced Graphics Architecture. It gives memory capacities as configurable options; the catalog keeps Chip RAM separate from Fast RAM so the shared graphics-memory limit does not disappear inside an invented total.