Dell Inspiron 7720 SE - Gpu boost is turning off

mine adapter is looking like this:

Well we dont really know that every 7720 owner has the issue (we do know that people here do), which is why Im wondering if it could be related to specific AC adapters and the SMART adapter functions. Perhaps the adapter is not talking to the laptop or battery correctly when its plugged in again.

Your AC adapter is quite different to mine particulary in relation to how many amps it outputs. Perhaps they use different adapters depending on whether its an i5 or i7 etc.

I know for sure that i7 models have 130W adapter and i5 only 90W adapter. People were talking about this on one of my domestic computer forums in relation with possible CPU substitution in future.

Interesting palad1n, this perhaps may narrow the problem to either onboard memory that is main battery backed up, OR some actual memory on the smart battery itself.

However, it could possibly still be related to a smart communication error between the battery and the power adapter so I wouldnt rule either out. Particulary as DELL have told me they are not able to replicate it on their test system so it would seem one of their components on their test machine is perhaps different to ours.

Does anybody have a secondary battery pack, even from a third party that they can test out to see if the problem still persists?

This gpu issue has nothing to do with power adapter... in case the battery is completely removed, gpu boost works well.

GPU boost is disabled only if i have my battery inserted and i accidentaly disconnect the power cable when the laptop is on... ten only reinserting the battery helps to solve this issue at least temporarily. (till the new power disconnect)

Right now I feel any progress is good progress, however I highly doubt there are people out there whom do not have the ''bug'''. I would love to know how DELL replicated the test, since I wouldn't be surprised if they tested whether the boost worked without a battery plugged in. Which as many know would mean the boost always works.

For what its worth I have the 130w type which looks like the one shown by ''revisions''. ill post spec number later the day if there is a use for it.

Hi,

I check check with other battery and still nothing. So its not battery issue.

I reproduce the same bug in four computers, so in my own, this is a factory and massive bug that might be resolved.

How DELL test this laptop? And in addition, the fact that the processor must be set to 99% performance to no overheat the laptop while executing games... mmmm... i consider this a cooling fault or a design fault...

psheemas, was the other battery you checked with an identical battery part or third party compatible model?

@i b ben, I'll check with my contact and see if we can get further info on how DELL tested this bug.

What do you mean by "processor must be set to 99% performance to no overheat the laptop"?

Graham Jupp, checked with oryginal dell battery and from other manufacturer, still same problem.

OK. Thanks for your observation. As for my laptop I can say only that I've got no problem with GPU or CPU throttling due to high temperatures. Firstly I thought that when the GPU reaches some point the boost turns of and it stays off. But after more observations I found out that GPU boost is working correctly until unplugging the power supply - it raises and lowers the frequencies dynamically. For my further observation the GPU stays most of the time on 845 MHz (or 835? don't know exactly right now).

What's your temperature threshold for your GPU to disable boost?

I have mailed my contact to ask how they attempted to reproduce the bug and whether DELL perhaps misunderstood the circumstances under which it occurs. Hopefully he replies soon, will keep you all updated.

@psheemas Thanks for the battery info.