Graphics card help

I am looking at radeon 7950 for my first build. 

Do you guys know the difference between the XFX FX-795A-TDJC and the XFX FX-795A-TNFC if any :P

Not sure what the TDJC and TNFC mean.


double dissipation has a better cooler, and will allow for better overclocking

oh I see :) Thanks, suprised I didn't notcie that.