Are differents the Battery life between 450 and 460?

[Maccotto]

I have 450 15" mbp and i am fine with battery drain (Last night i worked with lightroom 1-2hours and lost only 23% battery). I wanna change this mbp with 460 model because i am happy with 450 but i wanna sleep good for a lot of years.
So i have a doubt:
460 is more powerful graphic card and i think it can take more battery drain= less battery life.

Now do you think that 460 model will have less battery life than 450?

 

[dof250]

Well, if its not in use it won't use any power. If its in use to its full potential the 460 could draw a little bit more power. If running on integrated graphics it won't make any difference

 

[Maccotto]

How many is little bit?
About 30 minutes or 2 hours?

 

[jacg]

I'm getting a replacement, partly due to crappy battery life (4-5 hours). It might be related to the rattle in the chassis. However, I suspect it may be due to apps demanding use of the 460. If I quit all the apps requiring HPGFX then battery estimates improve.

 

[dof250]

Well that depends on the load... When my 450 is on my battery life halves. Maybe with the 460 its even a hour less. Running on dGPU is using much more power so should be avoided when running on battery

 

[Maccotto]

Well that depends on the load... When my 450 is on my battery life halves. Maybe with the 460 its even a hour less. Running on dGPU is using much more power so should be avoided when running on battery

Wow 460 is expensive battery drain.
Can you disable 450/460 when you are in battery mode?

 

[dof250]

I don't know if it will be an hour for sure, maybe its only 10 minutes... You can't disable the dGPU. macOS controls when its on or off. It depends on the workload, however in activity monitor you can see what apps are requiring the dGPU. Just don't use those when running on battery power.