Hi, > My question is, am I expecting too much from 64 bit? Does the C > code actually have to change to get the benefit from 64 bit? Is this Sorry, youre expecting too much for an application like "The GIMP" to benefit from 64 bit. I'd say look for pure CPU speed and memory bandwidth, or SIMD/vector instructions if the code is optimized for it. 64 bit gives most for applications that handle giant amounts of data or very high precision. Jens
