P370EM power settings for travelling (downclocking 7970m & a smaller PSU)

As Im waiting for the guys at MySN to get their hands on the 7970m version of Clevo P370EM, Id like to know a few things about the possibilities for battery power saving.
I'd like to do the following:
1.) Downclock the 7970m to about 50% of its standart clocks (Im NOT going to get Crossfire, just one 7970m)
2.) Set up the CPU usage to be minimal (thus disabling Turbo Boost)
3.) Buy a separate small PSU like 90W or 120W, for travelling

I like the idea of having strong hardware power when I need it (games, etc.) and longer battery life while travelling.
Also, the electricity in the place where I live tends to go out often, so I have a UPS system. I'd like to be able to downclock my GPU & CPU when the power goes out, so I can get more life out of the UPS before its battery runs out.
So, what do you guys think? Anyone done this yet? What software can be used to downclock GPU's and save the power profiles?
Is there software to control the CPU speed too (besides windows power options)?

 

I was literally about to get on here and make a topic about the same three things. I to would like to know how to save the power for school along with bringing a smaller psu to school.

 

You should be able to apply over/under clocks using Afterburner for the GPU. CPU can be set to minimal power usage in the power settings within Windows. Should be able to do what you're doing with minimal effort.

 

Is there something special to know about PSU's?
If I downclock properly, is it safe to use a 90W PSU?

 

I wouldn't recommend going for too small of an adapter. Not having done something like this previously, I'm not sure how much that will ramp down the power requirements. If you have a wattage reader, you can plug it in to the wall and see what the laptop is sucking up after doing the clocking.

 

downclocking GPU is not really necessary cause it will come down to p2 when it is idle, if you downclock too much, you may experience graphic lag on normal use. (and the power difference is not much irrc, because dropping to p2 usually undervolt the gpu at same time)

CPU wise, you can limit the max multiplier it go in windows power profile, setting 99% disable turbo, lower will reduce the max multiplier. But again, CPU downclock themselves when idle. You can get throttlestop to throttle your computer if needed.

Conclusion, the computer downclock itself when idle/underload, just pick the powersaving or balance profile in windows and pretty much good to go. You can tweak here and there to disable some components but it not going to make a dramatic difference.

PSU wise, it is different across brand and board, so I am not sure.

 

ive tried downclocking the 7970m via afterburner with no luck so far. it wouldnt accept any input below the idle clocks,altho it might be different on the p370m. ull just have to try
cpu-wise,no need for any specific tweaking,just use the included hotkey tool to set the system to powersave and do the same with windows. that will keep the cpu locked at its idle clock (SB-800 mhz, IB - 1.2 ghz) even when load is applied.
as for the psu,90W should actually be sufficient since under the above-mentioned conditions i never go above 75W with my system (see sig),even when running prime95. just make sure that u dont start any games or other 3D applications and that u keep everything on powersave while on the move

cheers

Sent from my Galaxy Nexus using Tapatalk 2

 

I love you jaybee! You just answered all my questions.
+rep

Well, now I cant wait to get my P370EM....

 

lol, always glad to help haha enjoy ur new beast

 

In 2012 ? Huh, you're in lebanon or what ^^ ?

 

Nope, Im in a country in the EU. I live in a beautiful, big house, with a nice yard that's got all kinds of plants and good trimmed grass.
Its in the outskirts of Sofia, where the air is many times cleaner than in the city itself, we also have a river at 300m distance, a forest and whatnot.

The problem is - the electricity transformer that supplies half of the district is about 60 years old and every time when it rains or in windy weather, it short-circuits something and it goes out.

Our sattelite receiver at home burnt out several times due to electric shock and so did my old desktop PC.

Thank goodness, Im using an UPS + a surge protector in order to prevent future problems like this.
But, when the power does go out, I need a power-saving plan for my laptop in order to save as much power as I can to prolong the battery time.
First, the UPS comes into play. When that runs out, the laptop battery kicks in. And when it goes low, I switch off.

Well, that about covers everything I think