Nope, not at all
In fact, I already did what you said. But im just concerned about what happened in the gpu upgrading process and whether the blown chip will affect anything else.
The brand of my current psu is the standard one that came with my hp, but the one i upgraded to was a GX Series Coolmaster - bought it from newegg. and yes, the 8800 gts needs a connection to the psu.