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Thread: dell optiplex sx280

  1. #1
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    Question dell optiplex sx280

    Hi

    I currently got my hands on a sx280 , they are pretty compact computers, and they have an external power supply which converts from 240V to 12V 18Amps with an average of 220 watts.

    I have upgraded it to a 200 gig HDD and 1 gig DDram it already has a P4 somethingMHz, which will be great to run the programs i am planning to use.

    I would like to put that in my car, however I am having big problems trying to find a power supply replacement .
    I thought of the M2-ATx however it only supplies 160 watts or so from memory.

    I prefer not to use an inverter , however it seems to be the only option.

    Any ideas please ? It's the last piece of my setup until i can install the system.

  2. #2
    Maximum Bitrate DaveDog's Avatar
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    Carnetix 2140 is your friend. You will have to hack up your current brick power supply for the connector, or add another connector to the SX280.

    http://www.carnetix.com/P2140/CNXP2140.htm
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  3. #3
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    12V @ 18A, wow, I haven't see any 12V DC-DC regulator that can push out that much.
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  4. #4
    One Sharp Cheddar ThunderStick's Avatar
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    Chances are you will not need that much power. The power supplies that came with the sx series computers are way over kill. I have an SX 260 hooked up in my car and it works great. The average draw on the power supply is only about 3-4 amps.
    There is a few threads related to hooking these up and I am pretty sure it is the same with hooking up an SX280.
    Do a search for "SX260 P2140"
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  5. #5
    One Sharp Cheddar ThunderStick's Avatar
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    Carnetix p2140 Installation Question
    Here is the link to the thread you need to read.
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    "12V @ 18A, wow, I haven't see any 12V DC-DC regulator that can push out that much."

    According to the external power supply, the output is 12 V@18A, which was my problem from day1 lol


    The Carnetix 2140 is an option i looked into, but the problem is the price, however if it does come to the last option, i will have no choice but to buy it, otherwise i won't be able to install it.

    I have seen high wattage PSU's around, however i have not seen anyone using it, hence i wasn't willing to use it.

  7. #7
    One Sharp Cheddar ThunderStick's Avatar
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    THe problem when using the SX260/270/280 computers is that they are 12v systems. A standard ATX PSU will not work with these. You need a 12v regulator. There are two that work well with the dells, The p2140 and the DSX12VD. THe DSX12VD is about $85 and the P2140 is About $135. Both worth it. As far as your computer needing the full 18amps I hardly doubt it. They allways make the Powersupply bigger than what the computer needs to ensure it doesnt get toasted. SX260/270/280 all come with an 18amp 12v Power Brick. My SX260 only draws a little over 3 amps when in normal use. While playing a DVD it may draw up to 7 amps. But still I am well with in the limits of my power supply being the P2140. Lot's of people are now using these dells as carputers and they are using the carnetix and the DSX power supplies so fear not, it has been tried and tested before.
    I say give one of them a try and good luck with your install.
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    Quote Originally Posted by ThunderStick View Post
    THe problem when using the SX260/270/280 computers is that they are 12v systems. A standard ATX PSU will not work with these. You need a 12v regulator. There are two that work well with the dells, The p2140 and the DSX12VD. THe DSX12VD is about $85 and the P2140 is About $135. Both worth it. As far as your computer needing the full 18amps I hardly doubt it. They allways make the Powersupply bigger than what the computer needs to ensure it doesnt get toasted. SX260/270/280 all come with an 18amp 12v Power Brick. My SX260 only draws a little over 3 amps when in normal use. While playing a DVD it may draw up to 7 amps. But still I am well with in the limits of my power supply being the P2140. Lot's of people are now using these dells as carputers and they are using the carnetix and the DSX power supplies so fear not, it has been tried and tested before.
    I say give one of them a try and good luck with your install.



    Thanks a lot for that, I am more keen to get the Carnetix one, i guess if u want something good and reliable you pay for what you get.
    I will be looking to connect the system to my power windows
    three words : voice activate windows

    Thank you for your advice, I will set up a new thread soon with my project's updates.

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    I have both the P2140 and the DSX12VD. I have also ran my Dell on both without any issues. Just for clarity They are both very good peices of hardware.

    So I wouldn't down the DSX12VD by any means. It has been stable for the past 3 or 4 months in my car. The P2140 worked just as well..

  10. #10
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    well i have found a very important piece of information
    the Dell's environmental data sheet which states the power consumption of their hardware. in my case the sx280
    available here :
    http://www.dell.com/content/topics/g...p&~section=015

    so according to their testing the dell consumes 139 watts MAX which is just great news.
    however i have upgraded it to a 200 gig sata hdd, but don't expect it to take out much more.

    ok time to shop for an LCD

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