Single / Double Sided

[Ritchie]

How can I tell whether a RAM chip is single or double sided, either by looking at it or by it's specifications? I know when double sided is required, and I know that while double sided means chips on both sides of the module on SDR chips this is not always the case on DDR chips.

[ajzchips]

In the "Collected Wisdom" section there's an id method for SDRAM DIMMs. I don't know what would be analogous for DDR.

[Ritchie]

Thanks I will take a look.

[edwin]

I know when double sided is required, and I know that while double sided means chips on both sides of the module

nope. a logically single-sided module can physically have chips on both sides of the module. single-sided/double-sided is about the logical organization of the memory not the physical chips.

Some boards have three slots and only room for 5 banks. You can thus fit 2 double-sided and one single-sided module at a maximum. memory slot count doesn't say anything about the actual amount of memory that can be fitted and I'm talking about modules with the same density chips.

[sulbert]

side=bank=row?