Poor cards, generally GT730 is unprofitable. At a similar price you can buy the GT1030, and this one has slightly lower performance than the GTX750Ti (it is three times faster than the GT730) and gets a modest 35W. Except that for GT1030 it would be good to have a monitor with digital input (HDMI, DP, DVI).
For GT730 (and GT1030) 240W power supply is enough.
qs300 wrote: It depends, if the card requires additional power supply (6 or 8 pin connector), then this power supply may not be able to do it, such cards require a power supply min. 400Watt.
Seriously? Cards requiring about 100W already require 6 pin power. The new generation quad-core processor needs 65W. Here we have an old generation, so let's count 100W. Even adding 50W of supply, 250W is required, not 400W (and even less with the new generation). The power supply requirements are based on the power demand of the individual components, not on the presence of a power outlet.