On 05/03/2017 06:38 AM, Luke Kenneth Casson Leighton wrote: > On Wed, May 3, 2017 at 11:28 AM, zap <[email protected]> wrote: >> >> On 05/03/2017 01:01 AM, Luke Kenneth Casson Leighton wrote: >>> --- >>> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 >>> >>> >>> On Tue, May 2, 2017 at 10:50 PM, zap <[email protected]> wrote: >>>> I assume that's going to be the third series of libre cards right? you >>>> making a lowrisc based processor and graphics, etc, >>> more likely the fourth or fifth. all these things happen in >>> parallel. the one after the RK3288 to investigate is the RK3399 >>> (6-core). also i've heard that the iMX7 is out so am having a look at >>> that. >> RK3399... 11.0 ghz speed if you count all the four cores which are 2 ghz >> each and 1.5 for the other ones... >> >> wow... >> >> I wonder how much watts that processor uses... >> >> that is crazy fast. I mean really... 4GB ram too I see as the norm. which is >> good. >> >> on a different note though, perchance will the fourth or fifth series of >> libre cards support 8gb of ram or more? >> >> I bet you could even get it to 16gb if you wanted... though that wouldn't be >> needed. heh. > the cost of the RAM ICs to do that are insane. the 1GB DDR3x16 ICs > are already $10 **EACH**. > > normally a DIMM would have 8 or 16 RAM ICs, meaning that for a 4GB > DIMM you need 8x 512mb ICs, or you could do 8GB by using 16 of them. > > normally you get 2 (matched) DIMMS totalling 8GB. > > if you want *32* GB you get 2 matched DIMMs, but nobody in > "mass-production" is shipping windows PCs or laptops with 32GB of RAM > (and if they are it's DDR4) > > additionally, it would need either 2 pairs of x32 DDR RAM > controllers, or it would be necessary to do a cascade layout: a > daisy-chain of RAM ICs.... and i'm not sure it would be possible to > fit 8 RAM ICs onto the 43x78mm PCB anyway. > > bottom line it's far too expensive and quite impractical. 4GB is the > practical limit at the moment and even that's stupidly expensive > relatively speaking. > > l.
Ah... okay I had no idea it would be that expensive if you made it from scratch. my bad. I will add that 32gb is absolutely insane and even 16gb is. I wouldn't need that :) 8 would be my limit and even that is a want per-say... :) but if it would be impractical then screw it I say. :) > _______________________________________________ > arm-netbook mailing list [email protected] > http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > Send large attachments to [email protected] _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
