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Thread: PSU upgrade for dell optiplex 7040 mini tower

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    Default PSU upgrade for dell optiplex 7040 mini tower

    Hi,
    I have a new dell optiplex 7040 mini tower, and it has a 240 watt 80 plus bronze PSU.

    I have removed that PSU and currently I am running it with my Cooler Master Extreme Power Plus 600watt PSU by using a 24 pin to 8 pin adapter cable.

    I am using a discrete GPU (palit gtx 560 1gb) and I plan to replace it with a zotac gtx 1060 mini.

    I would like to know if the seasonic TFX-350 would fit in there or not.

    Also, any better power tfx PSU suggestions would be welcome.

    I measured the dell PSU and it is 200mm x 83mm x 63mm and has a 80mm fan at the end (not top or bottom) and it is without any pcie connector.

    My PC is i7 6700, 16gb ddr4, 512gb Toshiba xg3 nvme m.2 ssd, win 10, gtx 1060.

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    We need more informations.

    It's best you make a photo of the mainboard, especially the place where the PSU connects to the board and upload it.

    As well as a picture of the PSU itself and the specifications label.

    Without this stuff, I'm afraid we can't really help you.
    Because there are some +12V Only Power Supplys out there. Without knowing what you have or need, nothing can be done.

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    I don't think we need more information.

    The Cooler Master PSU works with an adapter and he knows the dimensions of the PSU.

    So we know the Dell PSU uses the funky Dell pin-out and the dimensions aren't standard.

    Sooo.... I'm out. Can't help you.

    A 7040 is pretty new. Shouldn't it still be under warranty?

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    Yes, the desktop is new. It arrived on 19th august 2016.


    Here is the link to the adapter that I am using:

    http://www.amazon.in/Eyeboot-8-Pin-S...ilpage_o07_s00

    So far the computer works fine with the adapter under gaming load using the GTX 560.

    I only need information regarding tfx power supplies from trusted brands, since I searched a lot and could find only a couple:

    Seasonic tfx-350 or its OEM counterpart;
    Be Quiet tfx 2 ;

    However I assume I need ~280 watts of power under gaming load (considering gtx 1060 mini, and not gtx 560) so Be Quiet psu would be insufficient...

    Aren't there any more such tfx psu?

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    Quote Originally Posted by iamprateekprakash View Post
    However I assume I need ~280 watts of power under gaming load (considering gtx 1060 mini, and not gtx 560)
    No, with the GTX 1060 you need no more than 150W under gaming load (likely a smidge less).
    Best, Luca

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    Quote Originally Posted by quest for silence View Post
    No, with the GTX 1060 you need no more than 150W under gaming load (likely a smidge less).
    Ok, so i7= 65w
    gtx 1060= 150w
    2 ram = 20w
    1 3.5 hdd = 30w
    1 m.2 ssd= 10w

    total= 275w

    at max i may assume 300 watts.

    Any suggestions for a tfx psu?

    (I searched Athena Power: they are not available in India
    I have mailed tirupati enterprises regarding seasonic tf-350, they are the sole distributors in India for Seasonic products, and awaiting their reply)

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    Quote Originally Posted by iamprateekprakash View Post
    Ok, so i7= 65w
    gtx 1060= 150w
    2 ram = 20w
    1 3.5 hdd = 30w
    1 m.2 ssd= 10w
    I hope your have some fans right on the SSD, HDD and memory then, because with a power consumption like that it's gonna be very hot.

    Gaming DC load of 150W average should be possible btw, it's probably around 150/175W, with a max power consumption of 200W DC.

    Any suggestions for a tfx psu?
    The standard PSU? Which is that exactly?

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    Quote Originally Posted by iamprateekprakash View Post
    Ok, so i7= 65w
    gtx 1060= 150w
    2 ram = 20w
    1 3.5 hdd = 30w
    1 m.2 ssd= 10w

    total= 275w

    at max i may assume 300 watts.
    Again, NO: whether it had enough PEG connectors, a 350W PSU would be plenty even for a Core i7 + GTX 1080 rig.

    As a matter of fact, in real life scenarios (i.e. while gaming) you CAN NOT draw the max power from each part AT THE SAME TIME (but feel free to check some serious GTX 1060 review, if you're not used to ACTUAL gaming power draw figures).

    Your best bet is the Seasonic SS-350 TGM (or the retail sibling TFX-350) providing it actually fits (it's about 2mm larger, >1mm taller than the DELL PSU's dimensions you reported, as ANY TFX unit: you know the case clearance, if any).
    Last edited by quest for silence; 09-02-2016 at 03:42 AM.
    Best, Luca

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    Doesn't seem it has any PCIe connectors.
    And working with adaptors is a very very very bad idea in this case.

    BUT: You should use a modern PSU with intependent voltage regulation due to very very low load @ +5V and +3V3...

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    Guys,
    I got reply from Tirupati Enterprises, they dont have seasonic TX-350 with them. So I guess I am stuck with the ghetto arrangement of an ATX psu sitting just outside the case.

    Thanks a ton anyways for your valuable suggestions!

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