Tag: dram replacement

2 matching upgrades

Showing 2 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
AvailableChecked Jul 29, 2026	C64 Shortboard SRAM Replacement Familyby Jamarju and assembled-board sellers sram dram replacement 250469 250466 internal upgrade open hardware	Replaces the paired 41464 or 4464 DRAMs on later two-chip C64 boards with a modern SRAM module. Jaystonian showed nine assembled modules in stock at USD 14.99 on 2026-07-29, and Retro Lemon exposed a GBP 17.50 product page without an out-of-stock marker. Assy 250469 is the well-tested target. Jaystonian reports mixed results on 250466, and the open project's author had only tested 250469. Original soldered DRAMs require careful desoldering and sockets before this becomes a plug-in repair. Sources Jamarju C64 SRAM repository Jaystonian C64 SRAM module page Retro Lemon C64 SRAM module page	Commodore 64 Exact model	Open C64C SRAM replacement design Buy Jaystonian module Buy Retro Lemon RAM and VSP-fix module
Check statusChecked Jul 29, 2026	Tynemouth C16 64K SRAM Upgradeby Tynemouth Software 64kb sram dram replacement internal upgrade socketed module soldering commodore 264 series	Replaces the C16's original DRAM and multiplexers with a socketed SRAM module that can select 16 KB or 64 KB operation. The maker's 2024 article still links a SellMyRetro offer and says kits are available, but current stock was not independently established on 2026-07-29. This is explicitly an expert installation: four ICs must be removed without damage, four sockets fitted, and A14, A15, and phi-0 signals connected. The maker warns that it is not a beginner project. Sources Tynemouth C16 64K upgrade article Plus/4 World C16 64K entry	Commodore 16 Exact model	Tynemouth C16 64K upgrade article SellMyRetro kit offer

AvailableChecked Jul 29, 2026

C64 Shortboard SRAM Replacement Familyby Jamarju and assembled-board sellers

Replaces the paired 41464 or 4464 DRAMs on later two-chip C64 boards with a modern SRAM module.

Jaystonian showed nine assembled modules in stock at USD 14.99 on 2026-07-29, and Retro Lemon exposed a GBP 17.50 product page without an out-of-stock marker. Assy 250469 is the well-tested target. Jaystonian reports mixed results on 250466, and the open project's author had only tested 250469. Original soldered DRAMs require careful desoldering and sockets before this becomes a plug-in repair.

Sources

Commodore 64 Exact model

Open C64C SRAM replacement design Buy Jaystonian module Buy Retro Lemon RAM and VSP-fix module

Check statusChecked Jul 29, 2026

Tynemouth C16 64K SRAM Upgradeby Tynemouth Software

Replaces the C16's original DRAM and multiplexers with a socketed SRAM module that can select 16 KB or 64 KB operation.

The maker's 2024 article still links a SellMyRetro offer and says kits are available, but current stock was not independently established on 2026-07-29. This is explicitly an expert installation: four ICs must be removed without damage, four sockets fitted, and A14, A15, and phi-0 signals connected. The maker warns that it is not a beginner project.

Sources

Commodore 16 Exact model

Tynemouth C16 64K upgrade article SellMyRetro kit offer