Dell XPS 13: 5 hour battery life difference between i5 and i7?

Antrim

Distinguished
Aug 30, 2011
2
0
18,510
Hi. After doing some research looking for a laptop that I can use for work, I've decided to go with the Dell XPS 13 because of the great reviews and price.

I want to use the laptop mainly for development using the latest version of Visual Studio, so although at first I thought of getting the cheaper version with an i5, I started to debate if I should instead get the a little more expensive i7 version in order to speed up those compiling times.

However, to my surprise I found that Microsoft Store gives the i5 an up to 11 hours battery life (http://www.microsoftstore.com/store/msusa/en_US/pdp/Dell-XPS-13-4289-Signature-Edition-Laptop/productID.306275600) and the i7 an up to 6 hours batter life (http://www.microsoftstore.com/store/msusa/en_US/pdp/Dell-XPS-13-7144sLV-Signature-Edition-Laptop/productID.306260800).

Although I'd like to have a little more power, that seems an extreme difference. I plan on travelling a lot and taking my laptop with me, so battery life is also very important.

I just wanted to confirm that this indeed makes sense, and that it's not simply a mistake made by whoever put the specifications in Microsoft Store.

Thanks.
 
Solution
I don't think there will be that much of a difference between the i5-4210U and the i7-4510U. If you look on ark.intel.com, both have a TDP of 15W. The XPS's battery is a 55Wh.

If you are gaming at 1080p then the battery will last about 3 hours. For normal tasks at 50% brightness, it will easily do 7 hours. Light, offline work (like writing in MS Word) at 25% brightness, it could get up to 9 hours. The 11 hours does seem far-fetched though.

Nicholas Fu

Estimable
Oct 17, 2014
8
0
4,520
I don't think there will be that much of a difference between the i5-4210U and the i7-4510U. If you look on ark.intel.com, both have a TDP of 15W. The XPS's battery is a 55Wh.

If you are gaming at 1080p then the battery will last about 3 hours. For normal tasks at 50% brightness, it will easily do 7 hours. Light, offline work (like writing in MS Word) at 25% brightness, it could get up to 9 hours. The 11 hours does seem far-fetched though.
 
Solution