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Thread: Best PSU for Intel D945GCLF2 Dual-core Atom

  1. #1
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    Best PSU for Intel D945GCLF2 Dual-core Atom

    I am thinking of building my first CarPC and I am looking at the Intel D945GCLF2 board. What PSU would be the best for this motherboard plus a bunch of devices?

    I am thinking of having:

    USB Wifi
    USB Bluetooth
    USB TouchScreen
    USB GPS
    USB TV Tuner
    USB BrainFusion

    Slim DVD Burner - Might be SATA or USB
    One or Two 3.5" Hard Drives

    I don't want to have to buy a new PSU down the road when I finally get all the devices hooked up.

    I am thinking the M4-ATX 250 watt because it seems it has more features than the M2-ATX 160 watt. Is this true?

    Thanks!

  2. #2
    VENDOR - ITuner/MiniBox
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    You don't need M4-ATX. you should be fine with M1-ATX (90watt) or m2-atx (160watts).
    D94GCLF2 is a nice, low power consumption board, it even works with picoPSU-90, see this URL: http://www.mini-box.com/Intel-D945GC...TX-Motherboard (see recommended PSU), however this is for 12V only.

    Bottom line: M4-ATX will work OK for you for M1-ATX should so the same job as this board consumes about 25watts only.

    -Andrei

    Quote Originally Posted by kevint11 View Post
    I am thinking of building my first CarPC and I am looking at the Intel D945GCLF2 board. What PSU would be the best for this motherboard plus a bunch of devices?

    I am thinking of having:

    USB Wifi
    USB Bluetooth
    USB TouchScreen
    USB GPS
    USB TV Tuner
    USB BrainFusion

    Slim DVD Burner - Might be SATA or USB
    One or Two 3.5" Hard Drives

    I don't want to have to buy a new PSU down the road when I finally get all the devices hooked up.

    I am thinking the M4-ATX 250 watt because it seems it has more features than the M2-ATX 160 watt. Is this true?

    Thanks!

  3. #3
    VENDOR - ITuner/MiniBox
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    for your information, here are the power consumption measuremets for D945GCLF2:

    3.3V rail < 1A
    5V rail < 3A (this is the D945GC draining most of the power)
    12V rail < 0.5A (most of the time at 200mA, this is the ATOM CPU)
    -5V rail: not used
    -12V rail 25mA

    Enjoy,
    -A

    Quote Originally Posted by andrewb View Post
    You don't need M4-ATX. you should be fine with M1-ATX (90watt) or m2-atx (160watts).
    D94GCLF2 is a nice, low power consumption board, it even works with picoPSU-90, see this URL: http://www.mini-box.com/Intel-D945GC...TX-Motherboard (see recommended PSU), however this is for 12V only.

    Bottom line: M4-ATX will work OK for you for M1-ATX should so the same job as this board consumes about 25watts only.

    -Andrei

  4. #4
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    Thanks! I ended up ordering the M4-ATX ... I know it was way overkill but I liked the 'autolatch' feature it has. Also if I ever want to upgrade to something more powerful I can down the road.

  5. #5
    Maximum Bitrate PORTUGAL's Avatar
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    Does anyone uses OPUS 150 with this board.

    I having problems with mine
    Here in Portugal we have great weather, lots of brunnets, party a lot,drink a lot....
    http://img138.echo.cx/img138/896/bannerjoshua5dy.jpg

  6. #6
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    I disagee that the PicoPSU90 is a good match despite the link above. The challenge with this motherboard is all about 5volts due to the power hungry chipset, unlike its imediate predeccessor the D201GLY2 which had a frugal chipset but hungry CPU. I think folks are making the mistake of saying because the D201GLY2 could run on PICO90 and D945GCLF2 uses less power, that therefore PICO90 is OK.

    D201GLY2 used quite a bit of 12V for the celeron 220, and that made many mini itx psus unusable with the baord.

    D945GCLF2 uses hardly any 12V, but a good deal of 5V. So you need a PSU that can do at better than 7 - 8 amps sustained on 5V.

    PICOPSU-90
    "
    Specifications, picoPSU-90, 90Watts DC-DC ATX Power Supply

    Power Ratings
    Volts (V) Max Load (A) Peak Load (A) Regulation %
    5V 6A 7A +/- 1.5%
    5VSB 1.5A 2A +/- 1.5%
    3.3V 5A 7A +/- 1.5%
    -12V 0.05A 0.1A +/- 5%
    12V 5A 7A Switched input
    At max load, forced air ventilation is required. For fanless operation de-rate the output of the 3.3
    and 5V rails by ~25%. Peak load should not exceed 120 seconds. Combined power output
    should not exceed more than 90watts. "

    Translated, means 6A if fan cooled, 4 amps otherwise. Given the the powewr connnector of D201GLY2 was right next to the NB and CPU there was a good chance of it getting some air from the cooling solution in place there. With D945GCLF2 the power connnector is tucked right away from any likeyl airflow, and hence, 4A is the pico90s limit.

    Ive just blown a PSU that had a 5A limit on 5volts with this board.

    Now as for M1-ATX this was no good for D201GLY2 owing to its 12V needs. but taking another look at it for the atom baord its perfect!

    "Maximum Power Charact
    Output Rail Current (Max) Current Peak
    (<60 seconds)
    5V 10A 15A
    3.3V 10A 15A
    5VSB 1.5A 2A
    -12V 0.15A 0.2A
    12V 2A 2.5A"

    So M1-ATX is fine.

  7. #7
    Variable Bitrate Jistari's Avatar
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    How would an M3 atx be (thats the psu I have and Im switching to this mb)?
    PDP1170/TRS80/Atari800XL/Amiga500/286/486/P2/P4/C2D/i7 still a newb (but an old newb, been doing this a while) working my way up to "Complete Newb"

  8. #8
    Constant Bitrate txspazz's Avatar
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    Quote Originally Posted by Jistari View Post
    How would an M3 atx be (thats the psu I have and Im switching to this mb)?
    So far the M3 is working fine for me with this board. That said, this is on a bench setup for a couple days using only touch screen, wifi, and GPS on the USB and a single hard drive with no optical drive.

  9. #9
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    Quote Originally Posted by txspazz View Post
    So far the M3 is working fine for me with this board. That said, this is on a bench setup for a couple days using only touch screen, wifi, and GPS on the USB and a single hard drive with no optical drive.
    I got the board but dont know if I should get the "DSATX" or "M3-ATX".

  10. #10
    Constant Bitrate txspazz's Avatar
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    I can't recommend the M3-ATX at this point.

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