Tag: 48kb

2 matching upgrades

Showing 2 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
AvailableChecked Jul 27, 2026	5cfab Atari 400 Memory Boardsby 5cfab 48kb 1056kb axlon banked memory internal upgrade soldering	Replaces the Atari 400's internal RAM board with either 48 KB or 1056 KB of modern memory. Both product pages reported five boards in stock on 2026-07-27. Either installation requires disassembling the computer and soldering four jumper wires beneath the main board. A machine previously fitted with Atari's 48K RAM Expansion Kit may already have those jumpers. The 1056K board does not require the plastic-housing modification described in the older Atari kit instructions. Sources 5cfab 48K Atari 400 product page 5cfab 1056K Atari 400 product page	Atari 400 Exact model	48K Atari 400 memory board 1056K Atari 400 memory board
AvailableChecked Jul 27, 2026	5cfab Atari 800 Memory Boardsby 5cfab atari 800 48kb 1056kb axlon banked memory plug in solderless	Replaces the Atari 800's plug-in memory modules with either 48 KB or 1056 KB of modern RAM. Both current pages exposed active ordering on 2026-07-27, and the 1056K listing reported four boards in stock. Installation does not require soldering, but the computer's top cover and existing memory modules must be removed. Both supplied boards have a marked keyboard-facing orientation; reversing either one can damage the computer or memory board. Sources 5cfab 48K Atari 800 product page 5cfab 1056K Atari 800 product page	Atari 800 Exact model	48K Atari 800 memory board 1056K Atari 800 memory board

AvailableChecked Jul 27, 2026

5cfab Atari 400 Memory Boardsby 5cfab

Replaces the Atari 400's internal RAM board with either 48 KB or 1056 KB of modern memory.

Both product pages reported five boards in stock on 2026-07-27. Either installation requires disassembling the computer and soldering four jumper wires beneath the main board. A machine previously fitted with Atari's 48K RAM Expansion Kit may already have those jumpers. The 1056K board does not require the plastic-housing modification described in the older Atari kit instructions.

Sources

Atari 400 Exact model

48K Atari 400 memory board 1056K Atari 400 memory board

AvailableChecked Jul 27, 2026

5cfab Atari 800 Memory Boardsby 5cfab

Replaces the Atari 800's plug-in memory modules with either 48 KB or 1056 KB of modern RAM.

Both current pages exposed active ordering on 2026-07-27, and the 1056K listing reported four boards in stock. Installation does not require soldering, but the computer's top cover and existing memory modules must be removed. Both supplied boards have a marked keyboard-facing orientation; reversing either one can damage the computer or memory board.

Sources

Atari 800 Exact model

48K Atari 800 memory board 1056K Atari 800 memory board