Possible specifications of the GT300?

In order to prevent the possible loss of power, hardspell.com suspects Nvidia to skip the 55 Nanometer chip GT200b and present the GT300 as a direct successor. This chip is supposed to have 384 streaming processors and one GiByte GDDR5 memory, which is connected via a 256 bit interface. The VRAM is supposed to be capable of clock speeds beyond 4,000 MHz - this value is likely to have the value doubling of the Double Data Rate. The chip itself is said to be produced in 45 nanometers structure and have a clock speed of about 850 Megahertz.

Just as all the rumors that haunt the internet this piece of information has to be notices with a lot of skepticism.