new 750M mbp - gaming drains the battery

[Freyqq]

Yes I understand it doesn't offer graphics switching. I guess that I just didn't understand that it doesn't see the iGPU at all. If that was the case then notebooks without a dGPU wouldn't run in bootcamp at all. Maybe I caught something that you said to explain that though... "uses most powerful GPU in the list. That makes more sense then "doesn't see it at all"

I will qualify my statement. In laptops that have a dGPU and an iGPU, only the dGPU is visible in any OS that is not OSX. That includes windows and linux.

In laptops that just have an iGPU, the iGPU is visible.

 

[Freyqq]

It's normal for your MBP to draw power from both AC and battery during periods of extreme demand, such as gaming or other multimedia operations. This can cause your battery to stop charging or even drain, even though it's plugged in. Read the AC POWER section of the following link.

​

The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

Apple Notebook Battery FAQ​

Thanks, but I know about that issue already. My question is more about the amount of drainage over time. ~20% in an hour seems a bit high. If the % is constant, that means that one cannot use the laptop at max for over 5 hours at a time.

For instance, one could not have a long gaming session or render overnight.

It also puts extra stress on the battery, adding battery cycles.

 

[johnnnw]

LOL that's good...

Are you kidding me?

You were gaming on battery with a dedicated gpu.

If that was an Alienware you'd be at 50%.

Only being a 82% is awesome after an hour of gaming.

----------

Thanks, but I know about that issue already. My question is more about the amount of drainage over time. ~20% in an hour seems a bit high. If the % is constant, that means that one cannot use the laptop at max for over 5 hours at a time.

For instance, one could not have a long gaming session or render overnight.

You were gaming. Not typing a document.

5 hours on gaming is not bad in it's self, assuming constant draining rate. Which who even knows if that would happen.

 

[Freyqq]

LOL that's good...

Are you kidding me?

You were gaming on battery with a dedicated gpu.

If that was an Alienware you'd be at 50%.

Only being a 82% is awesome after an hour of gaming.

You misunderstand. This occurred while plugged in.

 

[johnnnw]

You misunderstand. This occurred while plugged in.

Wow, oops. Sorry. I didn't bother reading that closely. I saw drain and immediately assumed it was on battery.

My mistake.

*leaves with tail between legs*

 

[ckeck]

I'll try it here shortly but I'm pretty sure you can have Windows see the iGPU even with discrete graphics by simply disabling the 750M in the device manager and rebooting.

Will follow-up once I finish getting Boot Camp set up.

 

[priitv8]

Also, consider that on MBPs wirh dual GPUs only the dGPU can drive the external monitors (TB, HDMI). So besides plain GPU switching under Bootcamp you'd need the port triggering driver as well. Dunno, if Apple's being just lazy to work through all the HW support for Windows.

 

[helloes]

Not to pull this thread completely offtopic, but how did your MBP fare in gaming? which games did you play?

I'm getting a rMBP with dedicated GPU which will primarily be used for work-stuff, but also gaming. My main games are SC2, some CS:GO and other low req. indie games

 

[Freyqq]

I'll try it here shortly but I'm pretty sure you can have Windows see the iGPU even with discrete graphics by simply disabling the 750M in the device manager and rebooting.

Will follow-up once I finish getting Boot Camp set up.

in device manager, only the nvidia card is visible.

----------

Not to pull this thread completely offtopic, but how did your MBP fare in gaming? which games did you play?

I'm getting a rMBP with dedicated GPU which will primarily be used for work-stuff, but also gaming. My main games are SC2, some CS:GO and other low req. indie games

Pretty much identical to the 650M, based on my testing and looking at benchmarks. For instance, anandtech did this benchmark here: http://images.anandtech.com/graphs/graph6993/55282.png

I did the same benchmark with the same settings in bootcamp. I got 36.06 fps. Note that I am using the drivers provided by bootcamp, which are Nvidia's drivers from October 2013.

Still, from what I was coming from, this is an incredible improvement.

 

[ckeck]

I'm getting a rMBP with dedicated GPU which will primarily be used for work-stuff, but also gaming. My main games are SC2, some CS:GO and other low req. indie games

The 750M should handle the games you listed here fairly well. They are not pushing the boundaries of current-gen silicon in any way.

 

[thekev]

Yes I understand it doesn't offer graphics switching. I guess that I just didn't understand that it doesn't see the iGPU at all. If that was the case then notebooks without a dGPU wouldn't run in bootcamp at all. Maybe I caught something that you said to explain that though... "uses most powerful GPU in the list. That makes more sense then "doesn't see it at all"

I'm not sure how it loads the driver list, but when you install bootcamp I would assume it installs drivers for one gpu. When I said the most powerful one, I just meant a discrete chip if one is available, otherwise the integrated graphics. These things are likely set up when you install bootcamp on a given machine. I didn't mean to suggest that bootcamp runs benchmarks to see which is faster.

 

[Freyqq]

I'm not sure how it loads the driver list, but when you install bootcamp I would assume it installs drivers for one gpu. When I said the most powerful one, I just meant a discrete chip if one is available, otherwise the integrated graphics. These things are likely set up when you install bootcamp on a given machine. I didn't mean to suggest that bootcamp runs benchmarks to see which is faster.

Device manager in windows control panel shows all hardware it can detect.

----------

The 750M should handle the games you listed here fairly well. They are not pushing the boundaries of current-gen silicon in any way.

SC2 plays very well at 1920x1200

 

[thekev]

Device manager in windows control panel shows all hardware it can detect.

I forgot about that. I almost never use Windows anymore.

 

[Giuly]

The problem is your in Bootcamp running Windows. The hardware isn't optimized for that software and vice-versa. If you were playing a game specifically designed for OSX you'd have a difference experience. A great comparison would be Diablo 3. I learned this from experience.

If Windows isn't optimized to run on an Intel platform, blame Microsoft. If the game isn't optimized to run on an Intel platform with nVidia graphics, blame <insert game developer here>.

OP: https://discussions.apple.com/thread/3810789?start=0&tstart=0

On the iPad, the power adapter was bumped from 10W to 12W. Maybe we'll see a MagSafe II with a higher wattage if this gets confirmed to actually have happened.