On Jan 5, 2018, at 23:49, Luke Kenneth Casson Leighton <[email protected]> wrote: > > On Sat, Jan 6, 2018 at 6:35 AM, Richard Wilbur <[email protected]> > wrote: >> So the trick is how to choose a faster chip and integrate successfully into >> a system running at lower speed than it is specified for? > > yyup. have to use the 1800mhz 1.5v x8 DDR3 IC, which fortunately > happens to be down-compatible with 667mhz. the 1.35v DDR3L variant of > the same chip is *not*.
Your changes to the power supply capacitors and vias should help accommodate faster edges, etc. from the faster chips. > still, i cannot risk just relying on one possible DDR3 IC, so i will > have to source 1600mhz as well... and also last resort a 2gigabit IC > which will total, qty 4, only 1GBYTE of RAM. > > the budget's fixed... it's just the way it's going to have to be. > make adjustments that fit within the budget, end of story. Here's hoping the faster ones fit the budget and the circuit as I'm a big fan of providing as much RAM as possible! _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
