Page 4 of 7 FirstFirst 1234567 LastLast
Results 31 to 40 of 68

Thread: Raspberry Pi is a Low-Power, Credit-Card Sized Computer

  1. #31
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    I guess you answered the Odroid posting on the wrong (Raspberry Pi) page

    Nice pictures though, I'll ask the wife to take a snapshot of my 'Pile of Pies' -actually more of a Row of Raspberries, and including the BeagleBone and the still inactive Banana Pro- with her iPad.
    Last edited by Dirk Broer; 03-02-2016 at 02:03 PM.


  2. #32
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    New Raspberry Pi family picture from RasPi.TV (clickable for yet even more detail):


    Rumour has it that there is a Model 3A+ in the pipeline, as well as a Compute Module 3...
    Last edited by Dirk Broer; 06-17-2016 at 12:30 AM.


  3. #33
    Join Date
    Nov 2005
    Location
    Central Pennsylvania
    Posts
    4,333
    I just found this in my in box, and I thought I better post it for Dirk to review:





    Challenge me, or correct me, but don't ask me to die quietly.

    …Pursuit is always hard, capturing is really not the focus, it’s the hunt ...

  4. #34
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    It's small, very small:

    Specs:
    • Dimensions: 0.98"L x 0.98"W
    • Operating system: OpenWrt
    • System Memory: 32 MB RAM
    • Storage: 8MB SPI Flash (for firmware)
    • In-out voltage range: 3.3V to 6V
    • Power consumption: 200-220mA
    • Processor: Ralink/Mediatek 360 MHz RT5350 MIPS
    • Data rate: Up to 150Mbps
    • Dual band 802.11n Wi-Fi
    • Interfaces include:
      • 5-port 10/100M Ethernet switch
      • USB
      • UART
      • Software I2C
      • Hardware SPI
      • I2S, PCM
      • JTAG
      • Over 20 GPIO links


    But a 360 MHz CPU with 32 MB RAM looks to me only useful as an add-on board to e.g. a Raspberry Pi A+, Pi Zero, BeagleBone Black or Green to expand the limited I/O possibilities of those boards.
    Last edited by Dirk Broer; 03-28-2016 at 10:57 PM.


  5. #35
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    Should you buy a Raspberry Pi 3?

    The main advantages of the Pi 3 are the build-in WiFi and Bluetooth and the higher Clock- and RAM speed.
    The lesser advantages are the 64-bit ARMv8 architecture and instruction set, that unfortunately aren't being used in the present Raspbian builds, partly because the Pi 3 is presently limited to 1GB of RAM because of the used Video Core IV GPU (why don't they give each CPU core its own GPU?).
    Basically you have a 64-bit capable CPU on a 32-bit system with 1 GB of DDR2 RAM, like in the olden Athlon 64 days (even with comparable MHz...)

    BOINC-wise the Whetstone and Dhrystone MIPS are roughly the same as with the Pi 2, just slightly higher because of the 1200 MHz of the Pi 3 vs 900 MHz of the Pi 2 (1000 MHz when OC-ed). As the Pi 3 downloaded four Asteroids WUs, taking 85+ hours (!) each, I can't go into further detail yet. I've set Asteroids to 'No New Tasks', so in a day or three I can compare the Enigma scores as compared to my Pi 2s. The sole Enigma WU that managed to slip through was finished in a little over 9 hours, comparable to my augmented Pi 2, the one with the extra Hardware Floating Point and Integer libraries.

    2nd Enigma Wu went in 5.36 hours, a Raspberry record with me (previously stood at 6 hours).

    EDIT: By now the Pi 3 has all the scores in my top-10 of fastest Enigma WUs, so it is safe to say that on average the Pi 3 is the better Pi for Enigma.

    EDIT2: It seems that the Pi3 is somewhat more power-hungry than its older brothers. When you've enabled the internal WiFi -one of the boards USPs- it definitely needs 2.5A, preferably 3A or even 3.5A (A as in Ampere). You might see BOINC benchmark MIPs that have a twice as high value when connecting the Pi 3 to a 3A PSU as compared to a 2A PSU:

    • 375 vs 711 BOINC Floating Point MIPS (Whetstone) per core
    • 1240 vs 2469 BOINC Integer MIPS (Dhrystone) per core
    Last edited by Dirk Broer; 07-03-2016 at 12:11 AM. Reason: See those MIPS!


  6. #36
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    I saw to my astonishment that it was running six different QCN WUs, two Goofyx, a WuProp and an Enigma WU!
    That's 10 WUs on a single-core ARM-11 SOC, try and better that! It is a pity the Mexicans have opted out of QCN, otherwise I'd be running twelve WUs now on that poor Pi B+...
    With the new two Goofyx sub-projects that is 12 WUs on a single-core Raspberry, simultaneously


  7. #37
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    February 2017 family picture from RasPi.TV:


  8. #38
    NeoGen's Avatar
    NeoGen is offline AMD Users Alchemist Moderator
    Site Admin
    Join Date
    Oct 2003
    Location
    North Little Rock, AR (USA)
    Posts
    8,451
    That's a beautiful family photo

    By the way, there' a new VoCore2... still very very small.
    Last edited by NeoGen; 06-13-2017 at 11:25 PM.

  9. #39
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    4,372
    Quote Originally Posted by NeoGen View Post
    That's a beautiful family photo

    By the way, there' a new VoCore2... still very very small.
    New family members caused a new family photo:


  10. #40
    NeoGen's Avatar
    NeoGen is offline AMD Users Alchemist Moderator
    Site Admin
    Join Date
    Oct 2003
    Location
    North Little Rock, AR (USA)
    Posts
    8,451
    And the family keeps growing... can it be arranged in a sort of family tree to see each generation and its descendants?

Page 4 of 7 FirstFirst 1234567 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •