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How To Use SetCPU For Android

2011-06-22
alright this is David from phonebook calm and today I'll be doing a quick video on how to use setcpu for android in order to be able to use this app you do need to have root permissions on your phone otherwise you won't be able to actually change the clock speeds so with that said I'll go ahead and open up the app you'll be taken to this screen where you have two options you could hit Auto detect speeds which is recommended or you can show other frequency sets like I said recommended to choose this one but if for some reason this doesn't work you can hit this guy and it'll give you a list of phones or processors that you can choose from this choose whatever one best matches your phone but like I said only do that after you've tried this one and if it doesn't work so let's go ahead and select that for now and I'm just going to say it's got requesting root so I hit OK because he's been granted Super User permissions if you get a pop-up which you probably will the first time you run this app it's going to ask you to allow it or deny it hit allow and make sure the little remember box is checked alright so after you do that you'll be taken to the main tab and from here you can actually change the clock speeds so at the top bar you have the maximum clock speed and then at the bottom bar you about you've got the minimum and my phone is that currently set at a thousand so I'll go ahead and change this to 1200 and you can see the values right over here underneath in green change as I slide this guy over if they don't actually change there's a good chance that what you're doing isn't actually working if you're running an HTC device what you'd want to do is hit menu and go to know if you guys can see that per flock to Saylor you're going to hit that and it should disable the per flock that comes with some HTC devices and then after you do that you'll be able to actually change the clock speeds but a thing to note is most kernels including the stock ones don't allow you to overclock you actually have to have a custom kernel that allows for overclocking before you could actually push it past the factory default so I have a custom kernel it's the overstock two point four point one for the Samsung Vibrant there's a review on that on phone both calm and there's also a how to video on phone wealth column on how to change or how to flash a custom kernel so with that said let's go ahead and set this at 1200 and next thing I want to go over is the scaling governors you've got an option typically from four major ones and depending on your kernel you have more options or less but the four ones that you tend to see most often are on-demand Power Save conservative and performance you can see mine set on conservative because this one will go between your minimum and maximum clock speeds but gradually go up to the maximum as you put more of a load on the processor the on-demand one works in a similar way except for it doesn't gradually go up it just goes straight to the maximum performance pretty much like the name says it stays at the maximum the whole time so for in this case for my phone would be at 1200 no matter what whether I'm reading an article or I'm running a 3d game and the Power Save is the opposite of performance it'll run at the minimum clock at all times and this is mainly like the name says to save power like I said I choose conservative because you get a balance of performance and battery life with this one so you can choose whatever one you like but so when I use and I actually recommend it and most developers seem to do the same and right here you'll see that there's a set on boot option I haven't checked but when you're setting your clock speeds I definitely recommend to uncheck this guy and test it out for at least a day or two especially when you're overclocking because there's a chance that you might overclock to an unstable speed where your phone will start freezing or acting up and you could reset it and go back to normal when this is unchecked but when it's checked it's going to keep going back to that unstable clock speed in there's a chance you might not be able to get back into this app to set it back to the normal speeds and you'd have to do a hard reset you know and that's definitely something you'd want to avoid so definitely test it out before you check this but once you do check it because if you don't check it every time you restart you'll have to reset or redo this process of you know setting the clock speeds you want that's pretty much it for the main screen and the next tab is the profiles tab and from here you get a actually create custom profiles that allow you to set the clock speeds based off of conditions so I'll go in it enable and I'll show you what I mean so the profile for example right now is selected on chain are charging you can make it so the phone while is being charged kid go to a certain governor so let's say performance and I can make the minimum clock speed you know twelve hundred so while it's charging or while the phone is plugged in I can make it so the phone will actually run at full performance and that way if I'm using it I won't have to worry about it going to a lower clock clock speed and I'll get you know the best performance there's a few options you can do there's charging or charging while you're on a AC adapter the USB when the screens off when the batteries uh you know below a certain percentage and you can set that percentage phone temperature and time so there's a lot of things you could actually tweak uh through this tab I don't actually use them because I don't really have a need for it and my battery life is fine without it but if you want more control it's definitely something you should explore last thing you'll see is the priority right here when you set multiple prior are multiple profiles you want to set the priority so that way you could tell the app which one's the most important so let's say if the battery is less than 30% you want it to run on Power Save mode even if it's on charge you're going to set that profile up the battery less than 30% and you want to make the priority a little bit higher then the other one you set where when it when it's on charge it runs that full full capacity so that way you know if you're on a 30% and you plug it in it's going to actually charge your phone rather than just supply enough power to power the processor um that's pretty much for this tab and the next tab you'll see is the Advanced tab this is just so you can change the sampling rate which you know tells the governor's when do grade up or down the processor speed I don't like I said I don't use this and most people actually don't use this but it's definitely something you could do if you want more control over you know your what your processor is doing and when it grades the up speed up the info tab just gives you just that um this info on your phone in your processor like temperatures and things like that and it allows you to do a few tests to test your processor and your clock speeds and then the about is just telling you what version you have and a cool little thing actually is it lets you change the theme so if you want to go to like let's do a BIOS you could change the theme of the setcpu app so now you can see it it looks like this so it's pretty cool feature but that's just just for fun but that's pretty much it on the app if you have any other questions just visit phonebook calm and drop us a message or leave a comment on this video this is David from phonebook calm and thank you for watching and I don't forget to visit phonebook comm for more cellphone news reviews and how to's and the full how-to on how to use setcpu is also on for both calm thank you
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