Details on Nvidia 640M, 650M, 660M and 680M leak
While Nvidia has already announced the bottom half of the of upcoming GeForce 600M series, the high-end notebook cards have yet to be officially announced. Users have been very curious about the rest of the lineup -- Will Nvidia be using its next generation Kepler architecture for the mobile series? Or will they simply rebrand the lineup as another family of Fermi-based chips?
Fortunately, the latest rumor has been getting everyone excited about the 600M series again. According to a forum poster on NotebookReview, his sources claim that certain mid- to high-end GPUs on the 600M series may indeed be based off of the Kepler architecture. More specifically, the 640M, 650M, 660M and 680M could be the "true" next generation mobile GPUs from Nvidia, while others such as the 670M are expected to still be based on the Fermi architecture. Whether or not the supposed Kepler chips will all be based off of the GK104 or a downgraded GK10x architecture remains to be seen.
As usual, rumors from unspecified sources should always be taken with a grain of salt. While we wish for these mobile Kepler chips to be true, both Nvidia and AMD are no strangers to rebranding entire lineups much to chagrin of enthusiasts.
The GeForce 600 series is expected to launch in the coming months, coinciding with the launch of the Intel Ivy Bridge CPUs.
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