diference between these gpu-s

[leochief998]

what the difference between GTX750TI-OC-2GD5 and GTX750TI-PH-2GD5
oc=overclocked but ph???

 

[Eduello]

I don't know what PH stands for, but it has only one fan and it's not clocked as high as the OC version:
http://www.asus.com/Graphics_Cards/GTX750TIOC2GD5/specifications/
http://www.asus.com/Graphics_Cards/GTX750TIPH2GD5/specifications/
Also, the PH doesn't require a 6-pin power connector whereas the OC needs one.