As a general rule of thumb the better the lighting, the better the performance of the chip. Thus your 14n at 80 in good lighting should perform well. This is true with any digital, I have shot with, D1, D1x S2, 660 and now 1ds.
This is also true on the higher ISO's. You can get some amazingly detailed higher ISO shots from some of the Digitals out there in good light. I used to be amazed at how good my old D1 was at 800 in good light, however when shooting in low or non optimum, lighting, then things went south fast.
Where all the software comes into play is helping the camera deal with the signal to noise ratios in low light All chipsets have this problem, however CMOS tends to be worse since it is doing more processing on the acutal chip and thus will also tend to add to the noise.
Thus the 14n at ISO 80 should be a champ in good light, boy if it wasn't then there would be real trouble as thats the cameras baseline of operations.