Raspberry Pi: Difference between revisions

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In the UK enquiries about the board have been received from schools in both the [[state school|state]] and [[independent school|independent]] sectors, with around five times as much interest from the latter (January 2012). It is hoped that businesses will sponsor purchases for less advantaged schools.<ref name="guardian reboot computing" />
 
Many potential customers have voiced concern over the relatively small amount of memory (256&nbsp;MiB), which limits the usefulness for its intended purpose of teaching programming, due to the memory needs of modern compilers and interactive development environments.<ref>[http://www.raspberrypi.org/forum/general-discussion/design-choices-behind-the-rpi design choices behind the rpi affecting C++ and Python]</ref> Swapping is an unattractive option, due to the lack of a high-speed swap device. In the same thread, JamesH reported "it took ages" to build the Stellarium app in C/C++ (5 hours on an alpha board, compared to 10 minutes on an AMD Athlon PC with 2GiB). The memory is not user-upgradable, because it uses [[package on package]] memory rather than a memory socket. The Model B uses a Hynix H9TKNNN2GDMPLR memory chip, which however is factory upgradeable to the H9TKNNN4GDMPLR with 512&nbsp;MiB (in sampling status).<ref> [http://www.hynix.com/products/mobile/mobile.jsp?info.ramCategory=&info.ramKind=28&info.eol=NOT&posMap=MobileDDR2 Hynix mobile ddr2]</ref> The difference in contract pricing between LPDDR 2&nbsp;Gb and LPDDR 4&nbsp;Gb is about $5.<ref>[http://www.dramexchange.com Mobile Dram Contract Price Q4'11]</ref>
 
==Similar products==