Dell Addresses Throttling for Studio XPS 1647 Customers

A few weeks ago, I blogged about our fix for throttling issues that some of our Studio XPS 1645 customers had experienced.  In that post, I mentioned that there would be more information coming for customers with other systems. This post focuses on how we're addressing throttling for Studio XPS 1647 customers.

Recently, we released a new BIOS update (revision A04) to correct throttling issues on our Studio XPS 1647 line. In the case of the Studio XPS 1647, a 90-watt AC adapter is sufficient to run the CPU and the GPU at full performance. With the older BIOS versions for the 1647 the amount of power that the system could draw from the adapter was limited, and in some cases that limitation caused slower performance. Version A04 raises that limit which allows the system to operate at full performance.

 With the new A04 BIOS, based on testing completed by our engineering teams, we're confident that customers will be able to push their Studio XPS 1647 laptops to performance levels they expect with a 90-watt adapter.

So, why is the 130-watt adapter suggested for some Studio XPS 1645 users, but not for Studio XPS 1647 users? The Studio XPS 1647 uses the newer Intel Arrendale processors which require less power to run efficiently.    Because of this, the Studio XPS 1647 does not require the same level of power that some 1645 configurations do.

We do understand that some customers have reported that their 90-watt adapters get hot while powering their systems.   In this case, you can contact Dell's Technical Support to request a replacement 130-watt adapter.  Please note that if you use your Studio XPS 1647 with a 130-watt adapter, it will not deliver any more power to your system than the 90-watt adapter.

Contacting Technical Support

In the United States, use phone numbers on this page to contact Dell Technical Support.

Outside of the United States:

  • Go to
  • At the very bottom of the page, select your country in the Choose a Country/Region field
  • Choose Contact Us on the left hand side
  • Click on the More Details link in the Contact Tech Support section
  • Click on the green Telephone button under the Call Tech Support section

About the Author: Todd Smart