Nvidia “clock-blocks” Geforce GTX 900M series – again

As recently as February, Nvidia decided, after harsh criticism from users, to remove the overclocking latch in the drivers of the Geforce GTX 900M series, a limitation that opponents jokingly called “clock-block”. In practice, it is about Nvidia wanting to let computer manufacturers decide whether it should be allowed to overclock the graphics parts in laptops – or not.

Now it appears that the lock is back again. Geforce Drivers 350.12 and 352.86 once again stop all overclocking if the computer manufacturer has activated a so-called lock bit in the firmware, ie a setting beyond the user’s reach. This makes it impossible to use standard overclocking tools to manually raise the graphics processor’s clock frequencies.

The latest discovery rhymes badly with Nvidia’s previous announcement that new drivers should not stop overclockers but let the user decide if there is room to increase the clock frequencies and squeeze out more performance.

Source: Notebookreview, Techpowerup.