Nvidia’s former low-end graphic cards, GT510 and GT520 have gotten a new name and new wrapping. and returns in the 6xx series.
Nvidia has recycled their low-end GPUs and used the same Fermi chips in their new low-end series of GPUs. GT510 has been renamed GeForce 605 and GT520 has been renamed GeForce 620. Both cards come with half the memory of their predecessors, either 512 MB or 1024 MB. Even though GeForce 605 is a rebrand of GT510, there are a few key changes, which for some, does not seem any better. The graphics clock speed is reduced from 810 to 523 MHz and the processor clock speed from 1620 to 1026 MHz.
GT605 is not branded as a gaming GPU, so that the reduction in clock speeds should not harm anybody, if it is used for basic office work, which does not require too much power.
Both of the new low-end GPUs from Nvidia are OEM cards, which makes them unavailable for purchase as retail.
Read more at TomsHardware.com