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Thread: CarPC; Few thoughts.

  1. #1
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    CarPC; Few thoughts.

    hey; i've been looking around for a Sutiable car PC and i came accross this.

    Trying to get thoughts.
    http://cgi.ebay.com.au/New-MOTHERBOA...QQcmdZViewItem
    Intel Celeron D 346 Socket 775 with a
    MOTHERBOARD FOXCONN 661FX7MI-RS MOTHERBOARD


    Only real problems i can forsea;
    possibly too high a cpu, thers no real need, and i think the cooling might be a factor
    and it draws too much current. a whoping 80w, which with my other perifials brings it up to 250w; and i cant seem to fnd a power supply that would meet its need.

    The one thought i had was underclocking the processor. lol, never really heard of ths before, sure everyone can over clock, but who underclocks :P.
    but even still, i dunno if will be enough. i dont really wanna have to run an inverter if i dont have to; but i may modify a 12v PSU.
    what do i need; undervoltage alarm, auto shutdown, undervoltage and over voltage protection.

  2. #2
    Variable Bitrate
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    Like you said dont get it for the speed, you will never need it in a car. I have never needed more processing from my via 1.2gh. I run A/V, GPS routing, data logging and lan synchronizing. IT is however very cheap, microatx board with a chip for $170 delivered. Also I under clock my daily computer. To deal with heat mainly, but also to prolong life.
    Continued Worklog... Upgrades in progress:
    *15.4" WXGA LED backlight touchscreen upgrade
    *Custom fiberglass dash bezel

  3. #3
    Constant Bitrate rxh81's Avatar
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    What peripherals will need 250-80W=170W ??? 10 HDDs & Geforce 7900 GTX??
    The Via Boards are quite cheap, also the miniITX and needs about 15Watts I guess.
    But as I know they don't support Standby (S3) mode... was the ko for me...

  4. #4
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    i dunno
    i just shoved all the stuff into the power calculator and it told me 250w
    i thought it was crazy, as i would only be running a vid card; a 160-250G sata HD, some ram and the Touchscreen.
    basically everything else was going to run off a Powered USB Hub.
    i couldnt work out where all the power was going.

  5. #5
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    but if anyone else wants to calculate the power requirement for me, please. go ahead.
    the other option is to go for this board

    http://cgi.ebay.com.au/New-MOTHERBOA...QQcmdZViewItem


    Sempron 64 3000+ AM2 processor.

    more thoughts.
    btw. if anyone wishes to calculate the power required for this mobo and processor (and low end PCI-e vid for rear screens) and 1gb ram. feel free.

  6. #6
    FLAC W3bMa5t3r's Avatar
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    Not sure if this will help ya out... but it seems to have more info than other calculators...

    http://www.extreme.outervision.com/p...ulatorlite.jsp

  7. #7
    Constant Bitrate rxh81's Avatar
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    Most likely a M2 ATX with 160 Watt will be enought.
    This Calculator is really on the very safe side.
    E.g. a desktop HDD needs about 10W, but it calculates 23W...
    And 38W for the mainboard alone...??? never..

    CPU 60W + MB 20W + HDD 10W + RAM 5W+ DVD 20W + graphic 20W = 135W


    My system incl. TFT needs under load (measured): 43 Watt

    - Intel miniITX with Intel 950GMA graphics
    - Celeron M 1,7GHz (tdp 27W)
    - 1x 512MB RAM
    - 2,5" HDD (2,5W)
    - 7" TFT display
    - Touchscreen
    - 3 Fans (4W)
    - power loss of PSU (M2 ATX)

    And in Standby 2W - Very important - pc is always in standby and in 3sec ready

    (Switched off 1,3W)

  8. #8
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    well get rid of the dvd as i'llbe running it off a powered hub;
    so thats like minus 20w
    110w
    peak; a 160-200 would be right

  9. #9
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    oh
    and i was gonna underclock (have already asked questions on over clockers forum) they said its a first for them :P.
    and i should be able to loose approx 40w of power from the processor (down to 23w i think).
    so should be fine.

  10. #10
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    Quote Originally Posted by rxh81 View Post
    And in Standby 2W - Very important - pc is always in standby and in 3sec ready

    (Switched off 1,3W)
    wow. only 2w; thats crazy, that woud be nice. only 2 seconds.
    how would i work out what these would draw in standby, without actually measuring them?
    i always thought they drew alot more then that, henc why you have to shut them down, else dead battery.
    and 1.3 for off; i didnt think these things drew anything in their off state.
    what happens if you left it for a week or something, your battery would be dead.

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