Is 750 ti good option?

Solution
Your PSU is 300 watts which is the minimum requirement for a 750Ti so you should be okay. I would recommend getting one that is powered via the PCIe slot only (so no seperate power connector required). Then you know it'll never draw too much power.

Check this one out: -

http://www.amazon.com/MSI-OC-PCI-Express-N750TI-2GD5/dp/B00I602S92

I've got this model and it has been great. Overclocks well and stays cool and quiet.

It will let you play at 1080P although you might need to optimise graphics settings for more demanding games (but just use Nvidea's Geoforce Experience as it is automatic, quick and simple).
Your PSU is 300 watts which is the minimum requirement for a 750Ti so you should be okay. I would recommend getting one that is powered via the PCIe slot only (so no seperate power connector required). Then you know it'll never draw too much power.

Check this one out: -

http://www.amazon.com/MSI-OC-PCI-Express-N750TI-2GD5/dp/B00I602S92

I've got this model and it has been great. Overclocks well and stays cool and quiet.

It will let you play at 1080P although you might need to optimise graphics settings for more demanding games (but just use Nvidea's Geoforce Experience as it is automatic, quick and simple).
 
Solution