Nikon S8000 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Expeed C2 processor. On the other hand, Sony TX200V has a
18.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features BIONZ processor.
Below you can see the S8000 and TX200V sensor size comparison.
Nikon S8000 and Sony TX200V have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Nikon S8000 has 28% larger pixel area compared to Sony TX200V, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.