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Can i run gtx 750 ti on a 400 watt psu

I bought a Pre-built pc about one year ago and it's working great but a little behind on graphics power. So, i bought a gtx 750 ti and it's amazing for it's price range. I don't have any problems so far but a friend told me that my power supply is not a very good one. As i dont know much about psu quality and all that, i wanted to know if i should get a new psu or not

My specs
Core i3 6100 @ 3.7 MHz
2x250GB Hard disk
2x4gb ddr3 Ram
Galaxy Geforce 750 ti OC edition 2gb
ATX 400w psu

Here is a picture of my psu
https://imgur.com/bNewJKK
Is this psu enough for my gpu? And also can i overclock my gpu?
6 answers Last reply Best Answer
More about run gtx 750 400 watt psu
  1. That card should work with your current supply (no link to picture?) and already comes over clocked from the factory.
    More than likely, without the ability to add additional power to that card, you will not be able to over clock it much further than it already is.
    If you do want to try, then I'd suggest a bigger supply, 500W at least.
  2. Petrossa said:
    That card should work with your current supply (no link to picture?) and already comes over clocked from the factory.
    More than likely, without the ability to add additional power to that card, you will not be able to over clock it much further than it already is.
    If you do want to try, then I'd suggest a bigger supply, 500W at least.


    I tried overclocking and so far it's stable at +200 core clock and +300 memory clock. (Fixed the link)
  3. Best answer
    If I'm reading that correctly, that supply only gives you 144W on the +12V rail, which is not enough for a modern system (It is enough for the GPU, in this case).
    It looks like a very old supply as there are plenty of A going to the 3.3V and 5V rails.
  4. Petrossa said:
    If I'm reading that correctly, that supply only gives you 144W on the +12V rail, which is not enough for a modern system (It is enough for the GPU, in this case).
    It looks like a very old supply as there are plenty of A going to the 3.3V and 5V rails.


    So should i get a new supply or continue using this one? I'm on a budget right now so I'd rather avoid getting a new one. Also note that i have been using this setup for about a month now (with overclock) and it's working fine but can it damage my system in the longer run?
  5. If it seems to be stable, then you're good.
    In the long term though, consider replacing that supply (next few months, if you can)
  6. Its up to you if you wish to take the risk, but that is a junk PSU and it could blow and kill some/all of your components.
    You dont need a high wattage PSU with your setup, it just needs to be good quality. A good quality 350w would be plenty, but if you plan to upgrade in the future then a good quality 450/500w would be good.
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