These two slides show the changes in the new card in more detail with the new 256MB model on the bottom.  They have the same number of stream processors as well as the same core and shader clock speeds.  The memory system is still a 256-bit memory bus, though the new 256MB model obviously has half the memory and a range of frequencies from 700 MHz to 900 MHz depending on the board vendors' preferences.  The speed of the memory will also affect the price of the card as you can get 800 MHz modules much cheaper than 900 MHz, etc.

There is another change that came with the new 256MB 8800 GT card: a new cooler.  It's still a single-slot cooler and looks nearly the same, but the card has a bigger fan and a new speed-up table in the BIOS that affects when the fan actually turns on to higher speeds.  We'll look at that more on the next page, as it is pretty interesting to see what kind of performance changes that offers in terms of temperatures.