Do these stats take into account device density? I wonder if the higher density flash chips are more expensive.
About a year ago 4GB DDR3 SODIMM's were about $50/each but 8GB versions which required twice as dense chips were around $500/each - there was a huge premium on the dense chips.
Now the prices have dropped to roughly $30 and $70 respectively, which is much closer to a linear price/size curve.
Does anyone know if flash pricing follows a similar curve?
Usually you leave an empty space on the board to be filled with extra memory for the higher version. (And for some devices there are services that will solder in a chip for you in that spot.)
It's not typical to use different density chips since then you have to tune the rest of the system to match, and that's more complicated.
If SSD logic boards are any indication, devices with fewer chips frequently have lower read/write speeds, as they're not using all the lanes on the controller.
I'm thinking this would be the case as well on a tablet, unless the flash is in a bus topology already.
> I'm thinking this would be the case as well on a tablet, unless the flash is in a bus topology already.
There is no speed difference between 1 or 2 chips in this context, they are just treated as separate banks and mapped to different memory addresses controlled by the flash memory controller in the SoC.
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Do these stats take into account device density? I wonder if the higher density flash chips are more expensive.
About a year ago 4GB DDR3 SODIMM's were about $50/each but 8GB versions which required twice as dense chips were around $500/each - there was a huge premium on the dense chips.
Now the prices have dropped to roughly $30 and $70 respectively, which is much closer to a linear price/size curve.
Does anyone know if flash pricing follows a similar curve?
Usually you leave an empty space on the board to be filled with extra memory for the higher version. (And for some devices there are services that will solder in a chip for you in that spot.)
It's not typical to use different density chips since then you have to tune the rest of the system to match, and that's more complicated.
If SSD logic boards are any indication, devices with fewer chips frequently have lower read/write speeds, as they're not using all the lanes on the controller.
I'm thinking this would be the case as well on a tablet, unless the flash is in a bus topology already.
> I'm thinking this would be the case as well on a tablet, unless the flash is in a bus topology already.
There is no speed difference between 1 or 2 chips in this context, they are just treated as separate banks and mapped to different memory addresses controlled by the flash memory controller in the SoC.