Is it possible I need to upgrade the PSU

[Just Another Guy]

I've had my 650W PSU for 6 years and it's still going strong, however I plugged in my brothers GTX 660TI as a dedicated PhysX card earlier today and I'm getting some crashes. It could be bugs with the way it works, but I guess power could also be a culprit. Does anyone have any idea if I have enough?

I'm running an overclocked i7 930 at 3.8ghz, my main GTX 680, and my brothers 660TI (but it's only used for PhysX calculations). Nothing else particularly power hungry comes to mind.

 

[Dark Lord of Tech]

I would say your lacking power for sure.

 

[Just Another Guy]

Alright thanks, how much would you probably recommend that'd keep me above the limit if I was to get a 1070/80 down the line?

Also, are there certain cheap companies to avoid? Had a quick look on ebay and prices seem very hit and miss

 

[Dark Lord of Tech]

A single 1070 OR 1080 I would get a 550w or a single 1080ti get a 650w.

 

[jayambroziak]

Please take into account that cheaper PSU's lose about 10% of power efficiency per year of standard use. Get a nice 750 watt and you won't have to worry about it for a long time.

 

[Just Another Guy]

I also meant if I was to run a second dedicated physx processor haha, it's gonna be a while before I upgrade the gpu anyway. 750w sounds a bit too low considering I've already got a 650w, would that be the kind of minimum that would work but I should aim for higher?

 

[Dark Lord of Tech]

I would go to at least 850w if you plan on doing that , I went to 1000w P2.

 

[Just Another Guy]

Alright thanks, I'll go for that as a minimum if I upgrade. However I managed to fix the problem, my dad mentioned about some PSUs have multiple rails, so I tried switching around two of the pcie connectors and it works fine now