I have a heap of memory modules (DDR2 2GB) I'm not using and was wondering if I could have any practical use for them in any other way. Is it for instance possible to attach them to some kind of unit to make them into an external SSD?
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No.
First off, its the wrong type of memory. Your DDR2 memory is SDRAM. (Most) SSD drives use NAND memory. SDRAM requires power to keep data in memory, while NAND does not.
This means, even if you did convert the SDRAM into an external device, as soon as the device lost power all your data is gone.
NAND will hold data, essentially forever, without power. That is why SSDs use NAND.
There are add on cards that let you use SDRAM as storage though. They often use a battery to keep the data while to computer is off. But they appear to have died off, as they are expensive and not effective with the size of memory and caching in modern computers.
Keltari
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Yes, it is possible.
No, it is not practical, nor cost effective.
You would need
- a custom circuit board with
- DDR2 sockets soldered on
- add a memory controller to manage the RAM
- add a serial I/O controller to move data in and out of the device
- add a battery to hold RAM contents, since DDR2 forgets as soon as power is lost
- add an enclosure and a cable
- burn it in and make sure it works
- and schedule replacing the battery so the contents don't get lost when it runs down
Much cheaper to just buy new, since flash is cheap.
K7AAY
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