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Need some help replacing PSU

Hey guys. Im in need of some help. I have looked around here and haven't found any conclusions. Everyone who has asked this question ends up buying a new case for the computer.

I am looking to replace my PSU for my Acer AX3400-e3212 pc. This is a small pc and I am having some trouble finding a PSU that fits.

Here are the dimensions of the stock PSU = height - 5.1cm width - 9cm and length - 19.6cm.

Im looking for something in the 300w range.

I asked the guys at tigerdirect and they showed me this one -

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=7220648&CatId=1077

but I does not look like it will fit.

This one looks a bit too tall - http://www.newegg.ca/Product/Product.aspx?Item=N82E16817151090&Tpk=SeaSonic%20SS-300TFX

I really need some help guys, its driving me mad!
16 answers Last reply Best Answer
More about need replacing
  1. I would have suggested the Seasonic in your 2nd link. The Coolmax won't fit that case, so that's out. You would have to get a TFX size PSU. Here are some more that fit your case: http://www.newegg.ca/Product/ProductList.aspx?Submit=ENE&N=100007656%20600014004&IsNodeId=1&name=TFX12V
  2. Stock replacement. Wasn't sure if you needed one because yours was dead or not.

    http://www.acerparts.ca/acer-aspire-x3400-series-220w-power-supply.html?gclid=CMDwg4_S3LUCFQWxnQodKVAADg
  3. clutchc said:
    I would have suggested the Seasonic in your 2nd link. The Coolmax won't fit that case, so that's out. You would have to get a TFX size PSU. Here are some more that fit your case: http://www.newegg.ca/Product/ProductList.aspx?Submit=ENE&N=100007656%20600014004&IsNodeId=1&name=TFX12V


    Ok thanks for the reply.

    I had a look through the list you gave me (thanks for that). The seasonic looks best out of em all (the one I had posted in my op) but it has a height or 7.1 cm. Not sure if that will fit...

    This other seasonc that was in your list is only 6.3cm tall. http://www.newegg.ca/Product/Product.aspx?Item=N82E16817151113

    Do you think I can somehow sneak this thing in there? I mesured like 10 times and the max hieght I can prolly put and its 5.3cm..

    Also do you know if the cables on the psu will work with the acer? Does the acer have some sort of proprietary cable or something?
  4. logainofhades said:
    Stock replacement. Wasn't sure if you needed one because yours was dead or not.

    http://www.acerparts.ca/acer-aspire-x3400-series-220w-power-supply.html?gclid=CMDwg4_S3LUCFQWxnQodKVAADg


    Nope Im looking to upgrade. Thanks for the link though
  5. I can't really find a good link to your Acer PC. Is this like yours? http://www.computershopper.com/desktops/reviews/acer-aspire-ax3400-u2012
    If so, that is a std. TFX PSU. Its dimensions are no bigger than the ones in the Newegg listing for TFX. That is a standard.
  6. clutchc said:
    I can't really find a good link to your Acer PC. Is this like yours? http://www.computershopper.com/desktops/reviews/acer-aspire-ax3400-u2012
    If so, that is a std. TFX PSU. Its dimensions are no bigger than the ones in the Newegg listing for TFX. That is a standard.


    yes thats the same style as my computer. Its wierd though, I looked at the dimensions in the specs page on newegg and alot of those psu's have different heights. And im sure a 7 cm tall PSU wont fit.

    Ahh man this is frustrating..

    Anyway the reason that I want to upgrade the PSU is because im throwing in a new GPU. The Ati 5550 (ddr2). I chose this card because it supposedly doesnt draw to much power and I saw people on here sugesting it to others with this type of PC. The graphics card manufacturer recommends 300w PSU though. I still want this comp to survive another 2 years before I upgrade so I dont want to risk problems.

    Do you think even if I dont replace the PSU I wont have any issues?

    Here are some specs on the computer http://www.shoptoit.ca/acer-amd-athlon-ii-x4/15110415/
  7. PapaShteve said:
    yes thats the same style as my computer. Its wierd though, I looked at the dimensions in the specs page on newegg and alot of those psu's have different heights. And im sure a 7 cm tall PSU wont fit.

    Ahh man this is frustrating..

    Anyway the reason that I want to upgrade the PSU is because im throwing in a new GPU. The Ati 5550 (ddr2). I chose this card because it supposedly doesnt draw to much power and I saw people on here sugesting it to others with this type of PC. The graphics card manufacturer recommends 300w PSU though. I still want this comp to survive another 2 years before I upgrade so I dont want to risk problems.

    Do you think even if I dont replace the PSU I wont have any issues?

    Here are some specs on the computer http://www.shoptoit.ca/acer-amd-athlon-ii-x4/15110415/

    The HD 5550 DDR2 is so mild of a card, I truly believe the 220W PSU you have now would have no problem with it. Just don't expect too much from that card for gaming. It is really a week sister. Can you tell me the +12V rating of your present PSU?
  8. Forgot to add...
    You are aware that you are limited to half height cards (low profile), right?
  9. clutchc said:
    The HD 5550 DDR2 is so mild of a card, I truly believe the 220W PSU you have now would have no problem with it. Just don't expect too much from that card for gaming. It is really a week sister. Can you tell me the +12V rating of your present PSU?


    Yeah I know, im only looking to do some mild gaming nothing to heavy/crazy and also some video editing/rendering. This card is a good step up from the stock GeForce 9200 though.

    Sorry, but where can I find the +12V rating?

    Im running a AMD Athlon ii X4 640 cpu (stock) and 8gig ddr3 ram. will this be using up more of the 220w? I mean could I be pushing the psu?
  10. clutchc said:
    Forgot to add...
    You are aware that you are limited to half height cards (low profile), right?

    yeah I am aware. Thats why I also bought this for it (the GPU and this is on order)

    http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2530001&CatId=1558
  11. PapaShteve said:
    Yeah I know, im only looking to do some mild gaming nothing to heavy/crazy and also some video editing/rendering. This card is a good step up from the stock GeForce 9200 though.

    Sorry, but where can I find the +12V rating?

    Im running a AMD Athlon ii X4 640 cpu (stock) and 8gig ddr3 ram. will this be using up more of the 220w? I mean could I be pushing the psu?

    Run your PC's specs thru this PSU calculator: http://www.thermaltake.outervision.com/Power
  12. PapaShteve said:
    yeah I am aware. Thats why I also bought this for it (the GPU and this is on order)

    http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2530001&CatId=1558

    Do you have the make/model of the card? A pic? Those low profile adapters will only work if the card's PCB is low profile.
  13. clutchc said:
    Run your PC's specs thru this PSU calculator: http://www.thermaltake.outervision.com/Power


    ok my specs on there says im at 259w (they dont have the Geforce 9200 so i put Geforce 9400gt) CPU Utilization 85% and System Load 90%

    with the Ati 5550 GPU im at 269w

    so it says im above my 220w even stock?? lol

    heres the GPU I ordered http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=419883

    Pretty sure it will fit with the low profile adapter.
  14. Best answer
    Yeah, those are suggested wattage sizes leaving a little room for surprises. The 10W difference will not be an issue. Even if the card is too much for the PSU, all that will happen is the system will re-boot or shut down because the voltage drops below what is required. And you will only max out that card at heavy gaming. Personally I think it will be fine. The HD 5550 DDR2 is only a 39W card at max.

    Yes, that card is a true low profile. So, assuming you can swap brackets, you should be fine.
  15. clutchc said:
    Yeah, those are suggested wattage sizes leaving a little room for surprises. The 10W difference will not be an issue. Even if the card is too much for the PSU, all that will happen is the system will re-boot or shut down because the voltage drops below what is required. And you will only max out that card at heavy gaming. Personally I think it will be fine. The HD 5550 DDR2 is only a 39W card at max.

    Yes, that card is a true low profile. So, assuming you can swap brackets, you should be fine.


    Ok. Thanks alot for your help! I guess I will back off the idea of swapping PSU unless something crazy happens. The acer x3400 PSU swap still remains a mystery...... lmao
  16. Best answer selected by PapaShteve.
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