woah I haven't replied in a long time. If this thread is still alive, you can get a Inno3D GTX 660 Ti for PHP16,000 (which is actually a good price considering the performance you'll get). Though I'm not sure if the offer is still up but considering it's normal clocked then you can get that card for about PHP 15,000 to PHP18,000 price range.
EDIT: okay so I saw PCX again and looks like they're selling a Inno3D GTX 560 Ti for only PHP 7,100 (I recommend you instantly GET IT)
Oh and here's an MSI GTX 660 Ti POWER EDITION for only PHP 16,200. Great bang per buck tbh
have fun with your new build!