Acer M3985 psu

c300g97

Hi everybody i have an acer m3985 with intel core i5 3330, 8gb ram, nvidia gt 630 2gb and windows 8.1 with 1tb hdd.

I want to know if i can put in my computer an amd radeon hd 7750, but since i don't know how many watts has the psu i can't buy a new gpu,so i need a bit of help here D

finlux

Hi c300g97!

 

The Radeon HD7750 needs a minimum of a 400 watt power supply - I would recommend about 500-600 watts. The current power supply in your M3985 will not be any more than around 250-300 watt, so as you correctly assume, will need replacing.

c300g97

Yes but that's the recommended watt, i see that in full load needs only 130w,wich with all the pc should be everything at 250w,but i don't know how many watts my psu does..

finlux

You could open it up and have a look. It will state the wattage of your power supply.

You really should not use a low wattage power supply. The manufacturer's recommendation should be accepted, otherwise you'll be creating a whole lot of problems for yourself

sk8ter88

See for your self ! it supports 300 watts .

finlux

Great, but I stand by my original comments, that it would be too low for a graphics card that needs a minimum of 400 watts.

Alan-London

c300g97,

Despite your link to the Acer datasheet, be aware that your model was supplied with one of two possible PSUs - 300W and 500W. Regardless of version, the PSU Acer have chosen will be sufficient to provide the PC needs plus, I suspect, a reasonable overhead.
If you have a 300W then you will need to replace it in my opinion (or risk frequent crashes and possible PSU failure).
If you have a 500W then it is clear that your PC, as supplied, could not operate at 300W. For arguments sake, let's assume it draws ~320W. So, it follows that you require greater than 450W (320 + 130). It's only my opinion but I would not consider running at such close margins and I would change it - 50W overhead is cutting things too fine for me. Finlux has offered sound advice - I would take it!