[Captivate General] baconatorXVI:
Here's a response from a PM i recieved about my Antutu benchmark scores. This is meant to be a reference to others who are working to squeeze optimal performance out of their captivates.

Overclock at your own risk!

I am not responsible to any damage to your phone

I've had lots of experience over clocking desktops computers, I started when I was 14 years old or something. I am very happy to share my experiences here with my captivate.

Here's what I've been using to test the stability and speed of each incremental change: https://play.google.com/store/apps/...chMark&feature=nav_result#?t=W251bGwsMSwyLDNd

It's Antutu Benchmark.

Some may not like Antutu, and that's understandable, it's just the standard i have used to compile my testing results. if you have a better app to use suggest it! :)

The highest Antutu score i was able to achieve was 4044 when i was on 1.508 ghz. running Devil .86

Recomendations/Results:

I've been testing mostly stock settings between devil .86 and semaphore 1.2.5sc and devil keeps coming out on top with it's scores. not trying to start a war, but devil is just faster. don't get me wrong i love semaphore.

I am using Slim ICS 4.1, it's been the most stable ROM for me so far, if somebody can post their results with a different ROM and kernels then i gladly support it!

Slim: http://xdaforums.com/showthread.php?t=1517486

Tests between Semaphore 1.2.5.sc and Devil .86

I had both semaphore and Devil running live OC of 116% and after each test devil kept winning by about 50-80 points.

I recommend the Devil Kernel by DerTeufel1980, DerTeufel1980 is very helpful and supportive, he also turns out updates like a machine!

The devil kernel supports increasing frequency as well as live OC. It also has so many other cool features that make it fast(like GPU overclocking). This is why I recommend this kernel for Overclocking speed and stability.

His kernel is here: http://xdaforums.com/showthread.php?t=1642460 Sometimes he posts a downloadable release in the middle of a page so you usually have to search for it.

Advice/Settings

Overclocking to high stable frequencies, and having the least apps active is the key to getting the highest overclocking scores with Antutu.

To get scores over 4000 I use this set up:

My settings, SIO, Conservative governor, Frequency at the 1300mhz step, live OC at 116%(this yielded 1.508ghz). I had UKSM on(whether on or off didn't seem to make a difference during my tests), i had the GPU overclocked to 250mhz. I was using the XL mem version (391mb ram).

I had intended on running more tests on the big mem version but the constant reboots got tiresome, if anybody wants to take this up I'll gladly support it.

Crashes: Crashes are inevitable when testing. sometimes you get lucky and only the app crashes, most of the time though you will get a frozen screen or a few seconds followed by a reboot. depending on your kernel some may reset your settings. Use NS tools and save a setting that you know is stable and save your test settings so you can start from where you left off.

Voltages: the key to stability!

BE VERY CAREFUL WHEN YOU ADJUST YOUR VOLTAGES! too much is harmful to your chip!! Heat and overvolting is harmful!

these are my voltages:

Arm voltages

1400mhz it's 1.475

1300mhz its 1.450

Int Voltages

1400mhz it's 1.25

1300 it's 1.225.

The rest is stock. If anybody has found stable underclocking for the lower frequencies please post them here.

Live OC:

Something strange i noticed was that whenever i would do a odd numbered live OC i would get major instability... 116% was much more stable than 115%. weird huh? also i am pretty much unable to get a stable live OC of more than 116 regardless of the frequency step. Each phone will have it's own stability limit for Live OC. Some phones can go all the way up to 130%, but that's rare.

the key is to keep finessing it and carefully and incrementally change things till you find a nice sweet stable spot, other phones can achieve more live OC.

My favorite Fast Stable Safe setting:

My phone is almost always on this setting for everyday use: SIO, Conservative, Freq OC at 1200 and Live OC at 116% yielding 1.392ghz. with a bit of voltage increase this has become my favorite setting, i always use this setup.

Some may balk at my use of the conservative governor, I Love it actually, CPU spy reports that the conservative governor barely ever uses the highest step for regular usage. Which is great because you don't need the highes step to be running all the time as most actions don't require it, the less high voltage you send to the chip the better. It also helps with battery life.

HEAT!!!!

Warnings about heat. voltage increases mean more latent heat. your phone is a closed system so the heat gets locked in easily... Warm is allright(not wonderful) any hotter than warm and you need to take steps to manage the heat. I've found two easy ways to deal with it, aside from putting it in my refrigerator :) lol

For stress testing I ussually have the battery cover off, one less thing to get hot.

One simple way to manage it when you feel the sd card slot warm is to press the SIM/Sd slot to your lips and blow air through the phone, this will help cool it down. another way to manage the heat is to do this

I borrowed a cooling fan from my gaming computer and set the phone up on it with the battery cover off. this really helped keep it cool.

Also, never leave your phone sitting in the sun on a hot day, I don't know why you would in the first place. But just don't.

Higher scores are achievable... just keep tweaking things.. I deleted all my user apps so nothing would run in the background and that did helps my scores a bit.

Also airplane mode prevents unwanted texts form interrupting testing. that way the phone can focus only on the task at hand

I bet wiping the SD card would improve read/write speeds incrementally...

If somebody wants to research this please post it here

Please read this before you post "results"

Please run at least 2 or 3 tests to sort of average the scores before you post about a result. This will help keep information clean of errors that can affect test results.

for example when i was doing a 1.392ghz test on Antutu, during the knights hacking thier swords scene a glitch happened and my frames per second shot up to 102 fps. It occurred for a few seconds but it was enough to offset the scores A LOT. I got a 4185 on 1.392ghz which doesn't seem possible. consequently I hold the #6 score listed for the captivate :laugh:

This is why I say get an average for the scores. with my 1.392ghz set up i tend to get scores ranging from low 3800's to high 3900's

Remember each phone is different!

Have fun tweaking!

Hope this helps!