External GPU power usage

tap1or

Honorable
Nov 1, 2013
9
0
10,510
How big of a PSU do I need to run MSI GTX970 with my laptop. Currently looking at a 350w PSU. The Nvida site specifications read a 500w system recommendation, but if i'm running it on the external adapter is the 350w enough?
 

Ra_V_en

Honorable
Jan 17, 2014
1,296
0
11,960
I've heard about some external GPU on Alienwere laptops but not for any other. Thunderbolt as any other similar connectivity interface is to attach peripherals and GPU as far as i know is not one of them yet.
The only way i know to upgrade GPU on laptops is MXM module which certainly is not so common at all and certainly isn't an external one. Other then that dGPUs has some specific connections with specific laptop mobos, sometimes even hard soldered.