What PSU do i need

davs8

Reputable
Jun 30, 2014
6
0
4,520
Current Build
Intel i3, GTX550Ti, 2 IDE HDD's, 2 SATA HDD's 1 SATA SSD.
Im running all this with a 300W generic PSU. Is this a miracle? Been 2 long years without psu issues...

Future build
I will replace my gtx550 for a GTX760. Im thinking on a corsair 450 or 550 PSU (corsair because they say is good quality and active pfc) Do i need 550W?? Do i need some more??

Please help, internet is full of people saying that any gaming build require 750 or 850W but i cant believe it when i run gtx550 with 300W. Just changinh it to gtx760 would mean i need 750W???
 
Solution
gtx 550 recommends a minimum 400W PSU and the 770 recommends 500w

If you want more detail according to how much your current setup uses, use a PSU calculator. They will tell you how much your system needs overall.

Your power supply is probably too small currently. Being corsair is probably just fine, but I mean just. Its worth getting a higher wattage supply, such as a 750w from corsair, because if you chose to upgrade parts in the future, you dont have to dish out on a new power supply.

750w form corsair is great: especially if moduar. If you cant afford them, try cooler master who are usually a bit cheaper but great quality.

Tom

iliketrainz98

Honorable
Jul 24, 2013
43
0
10,540
gtx 550 recommends a minimum 400W PSU and the 770 recommends 500w

If you want more detail according to how much your current setup uses, use a PSU calculator. They will tell you how much your system needs overall.

Your power supply is probably too small currently. Being corsair is probably just fine, but I mean just. Its worth getting a higher wattage supply, such as a 750w from corsair, because if you chose to upgrade parts in the future, you dont have to dish out on a new power supply.

750w form corsair is great: especially if moduar. If you cant afford them, try cooler master who are usually a bit cheaper but great quality.

Tom
 
Solution
It is possible.
The pcie slot can deliver 75w, the aux 6 pin connector can also deliver 75w.
That is 150w for the graphics card, leaving 150w for the rest of the pc which is doable.
One problem with a cheap generic psu is that it will not have the protective circuitry to protect your parts if it should fail under overload.

A GTX760 will need 2 6 pin connectors. If you had a good quality psu, 400w might actually do it.

I have no problem overprovisioning a PSU a bit. Say 20%.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.
And, usually it costs little more if you are looking in the 450-650w range.
Corsair can be good, depending on the model. The cheaper CX versions are only middling quality.
Check this list:
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true
I would look for Seasonic or xfx. 650w if you can, that will allow you a future upgrade to a titan class card.