|Your unit: http://www.coolermaster.com/product...|
Not a very good one, 70% efficient at typical loading (look for 80% or more), two 12 Volt rails (a single 12 Volt rail is better), 25Amps on the 5Volt and 3.3Volt rails that you cannot use most of, no mention of active PFC, and the length of the warranty is not mentioned on their website, are all signs of an inexpensive model.
If your graphics card requires 32Amps and assuming for the moment that it can draw evenly from both rails and the power supply can actually consistently deliver the full power (I have doubts about both), that does not leave you any remaining amperage for your CPU or other high draw components. So the answer in short, is that no, I would not recommend that you use that power supply when you upgrade your video card, but purchase a better one. If it worked, it would have problems whenever you were using it under high stress like gaming or other serious graphics programs. You would likely get freezing when your graphics fought your CPU for sufficient power when you needed them both the most.
You have to be a little bit crazy to keep you from going insane.