So I'm going to shortchange you and ask you to look at and try the Geforce 750 that is widely known to not require a replacement PSU. The question of 235/300 is so well done that again I'll just end with a link. Bob
http://www.tomshardware.com/answers/id-2125599/300w-power-supply-evga-geforce-gtx-750-superclocked-2gb.html is one of a thousand posts about this.
And no, it may not deliver what you asked but it's the best I know of without changing case, power supply and wallets.
Hi guys, I want to upgrade the graphics card on my Dell Optiplex 780 SFF with something decent for gaming, such as NBA 2k15 and have it run smoothly on medium settings, but the only cards I am able to find require atleast a 300w power supply or larger. I've been looking around for a power supply to upgrade to, but can't seem to find anything bigger than my current power supply which is 235w. Do I still have any options left, or is it time for a new pc?
Dell OptiPlex 780 SFF
Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
Chipset: Intel Eaglelake Q45
Physical Memory: 8062 MB DDR3 SDRAM
GPU: nVIDIA GeForce 210
235w Power Supply
P1 - 24-Pin Mini ATX Power
P2 - 4-Pin ATX Power
P3 - Sata Power
P6 - P6 Connector