[Arm-netbook] EOMA/CF idea

[Baybal Ni]

moreover, I doubt that there are POPs for allwinner already.

On 3 January 2012 09:02, Vladimir Pantelic <vladoman at gmail.com> wrote:
> Gordan Bobic wrote:
>>   On Tue, 03 Jan 2012 17:45:15 +0100, Vladimir Pantelic
>>   <vladoman at gmail.com>  wrote:
>>>  lkcl luke wrote:
>>>>  On Tue, Jan 3, 2012 at 3:13 PM, Vladimir
>>>>  Pantelic<vladoman at gmail.com>   wrote:
>>>>>   lkcl luke wrote:
>>>>>
>>>>>>      hardkernel got away with 42x25mm for goodness sake, and that
>>>>>>  was
>>>>>>   mostly single-sided!  B2B connectors on the other side.
>>>>>>
>>>>>>  http://www.hardkernel.com/renewal_2011/products/prdt_info.php?g_code=G129705564426
>>>>>>
>>>>>>      but, they had to do a 10 (possibly 12-layer) board to get
>>>>>>  everything
>>>>>>   into that space.
>>>>>
>>>>>   and POP, so no SDRAM routing....
>>>>
>>>>    good point! hmmm.... maybe there's an advantage to POP after
>>>>  all...
>>>
>>>  in saving board space, there is. But I don't think there is non-LPDDR
>>>  POP
>>>  anyway...
>>
>>   I don't really see a problem with POP, given that the RAM is soldered
>>   on anyway. If you can max out the capability of the SoC in terms of RAM
>>   it can handle, and you can do it using a POP arrangement, then it's a
>>   great idea. Sure, the ICs might be a bit more expensive, but it removes
>>   a lot of scope for mistakes in terms of trace lengths and timing issues,
>>   so it is probably worth it - not to mention that it makes things much
>>   more compact.
>>
>>   The only case where it's an issue is where it isn't possible to get a
>>   big enough RAM chip. But if your SoC can only handle a gig and you can
>>   get a gig POP chip, go for it. :)
>
> I don't see a problem with POP either, except for the fact that I know
> only LPDDR POP and not ordinary DDR3 POP.... And you surely don't want
> LPDDR due to the extremely high price...
>
>
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