Well it looks as though we may have won this battle! PeterS from Nvidia has just posted the following: As you know, we are constantly tuning and optimizing the performance of your GeForce PC. We obsess over every possible optimization so that you can enjoy a perfectly stable machine that balances game, thermal, power, and acoustic performance. Still, many of you enjoy pushing the system even further with overclocking. Our recent driver update disabled overclocking on some GTX notebooks. We heard from many of you that you would like this feature enabled again. So, we will again be enabling overclocking in our upcoming driver release next month for those affected notebooks. If you are eager to regain this capability right away, you can also revert back to 344.75. http://i.imgur.com/cRY0T2G.png Source: https://forums.geforce.com/default/topic/805791/geforce-drivers/gtx-900m-overclocking-with-347-09-347-25/post/4466443/#4466443 While it is fantastic that Nvidia has potentially reversed their decision, it is important that we continue to highlight the issue until the updated overclockable driver is released.