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# On the older beta model B boards, 128 MB was allocated by default to the GPU, leaving 128 MB for the CPU.<ref>{{cite web|url=http://www.reddit.com/r/raspberry_pi/comments/oicyr/i_have_a_raspberry_pi_beta_board_ama/c3hj3n0 |title=I have a raspberry pi beta board ama |publisher=Reddit.com |date=15 January 2012 |accessdate=6 May 2012}}</ref> On the first 256 MB release model B (and Model A), three different splits were possible. The default split was 192 MB (CPU RAM), which should be sufficient for standalone 1080p video decoding, or for simple 3D, but probably not for both together. 224 MB was for Linux only, with just a 1080p [[framebuffer]], and was likely to fail for any video or 3D. 128 MB was for heavy 3D, possibly also with video decoding (e.g. XBMC).<ref>[http://www.raspberrypi.org/forum/general-discussion/config-txt/page-3 Raspberry Pi boot configuration text file]</ref> Comparatively the Nokia 701 uses 128 MB for the Broadcom VideoCore IV.<ref>{{cite web|url=http://www.raspberrypi.org/forum/general-discussion/nokia-701-has-a-similar-broadcom-gpu |title=Nokia 701 has a similar Broadcom GPU |publisher=Raspberrypi.org |date=2012-02-02 |accessdate=2012-06-22}}</ref> For the new model B with 512MB RAM initially there were new standard memory split files released( arm256_start.elf, arm384_start.elf, arm496_start.elf) for 256MB, 384MB and 496MB CPU RAM (and 256MB, 128MB and 16MB video RAM). But a week or so later the RPF released a new version of start.elf that could read a new entry in config.txt (gpu_mem=xx) and could dynamically assign an amount of RAM (from 16 to 256MB in 8MB steps) to the GPU, so the older method of memory splits became obsolete, and a single start.elf worked the same for 256 and 512 MB Pis.<ref>[http://www.raspberrypi.org/archives/2296 introducing new firmware for the 512MB Pi]</ref>
# Level 2 Cache is {{nowrap|128 kB}}, used primarily by the GPU, not the CPU.
# The [[ARM11]] is based on version 6 of the [[ARM architecture]] (ARMv6), which due to its age is no longer supported by several popular versions of Linux, including [[Ubuntu (operating system)|Ubuntu]] which dropped support for processors below ARMv7 in 2009.<ref>http://www.linuxuser.co.uk/features/raspberry-pi-interview-eban-upton-reveals-all</ref>
# The Raspberry Pi (model B) also contains a 15-pin [[Mobile Industry Processor Interface|MIPI]] [[camera interface]] (CSI) connector, which at the moment is unsupported, but the foundation is planning to release a camera module for it, sometime in the near future.<ref>{{cite web|url=http://www.raspberrypi.org/forum/features-and-requests/camera-for-the-csi-2-port |title=camera for the CSI-2 port |publisher=Raspberrypi.org |date= |accessdate=2012-06-22}}</ref><ref>{{cite web|url=http://elinux.org/File:Raspi-Model-AB-Mono-2-699x1024.png |title=diagram of Raspberry Pi with CSI camera connector |publisher=Elinux.org |date=2012-03-02 |accessdate=2012-06-22}}</ref>
# Support for raw [[liquid crystal display|LCD]] panels is available in hardware through the available [[Display Serial Interface|DSI]] connector from the [[Mobile Industry Processor Interface]] (MIPI) Alliance.<ref name="DSI" /> Software support is being planned.
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