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Choosing 65w-90w ac powered notebooks!

Last response: in Components
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February 12, 2013 8:22:07 AM

Hello,
Guys,need clarification...
There are graphics powered-laptops(notebook) with 45W,65W & 90 W AC power supply...
My Qn is:

1.Reason for difference in power supply variation in models eventhough they have similar config(irrespective of brand)?

2.Does it mean- 90W powered laptop able to satisfy graphics-hungry games than rest?

3.Or-45w and 65w ac powered are more power-efficient than 90W ones??will its battery depreciate faster while playing games longer?

4.What should be done when we upgrade laptop specs-RAM or Graphics..?
(Additional info or opinions are welcome)
Thanks in advance!!
a b ) Power supply
February 12, 2013 11:42:02 PM

(1.-3.) Graphics capabilities depend much more on what graphics chip it has. A 90w notebook from 2006 will probably perform worse graphically than a modern 65w notebook. Do not look to power consumption to try and determine graphics performance.

(4.) You cannot upgrade the graphics chip of a laptop.
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