Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon G9 X and Nikon P310 side-by-side from the front, back and top in their relative dimensions. Canon G9 X has external dimensions of 98 x 58 x 31 mm (3.86 x 2.28 x 1.21″) and weighs 209 g (0.46 lb / 7.37 oz) (including batteries). Nikon P310 has external dimensions of 103 x 58 x 32 mm (4.06 x 2.28 x 1.26″) and weighs 194 g (0.43 lb / 6.84 oz) (including batteries).
Below you can see the front view size comparison of Canon G9 X and Nikon P310. Canon G9 X is 5mm narrower and 1mm thinner than Canon G9 X but they have the same height of 58mm.
Here is the back view size comparison of Canon G9 X and Nikon P310.
Now lets look at the top view comparison of Canon G9 X and Nikon P310.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon P310 is 15g lighter than the Canon G9 X but we don't think this will make a significant difference.
Unfortunately neither Canon PowerShot G9 X nor Nikon Coolpix P310 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon G9 X and Nikon P310's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.