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Mini Overclocking Guide
NOTE: The Steps Below were Tested on Froyo Roms. I have found different and perhaps better ways to test stability with CM7 Roms so I added a section for that too.
You can still use Stability Test but I don't use it too often anymore for CM7.
Programs Required for testing:
#1 Stability Test
#2 Neocore (please note that some kernels are not FPS unlocked meaning that the frame rate will not go over 56fps so make sure to compare apples to apples when testing different kernels).
For overclocking/undervolting you can use either Pimp My CPU or Voltage Control
Intro:
I posted this Guide in ROM thread but decided it might help someone trying to get a head start overclocking...just a reference not a bible.
First of all, please realize that no two CPUs are created equal. Just like with PC Overclocking, there is the luck of the draw involved here so just because one person can do 1.4Ghz it does not mean you will be able to do so nor it means that my UV settings will work for you.
Achieving 1.2Ghz should be feasible for almost all users since most of the code for it was already done by Samsung themselves. After that point though, it is a matter of luck. Many users can do 1.3Ghz but getting into 1.4Ghz the chances of stability drop dramatically.
Please note that with CM7 Roms it seems a LOT more people is able to hit 1.4Ghz and even 1.5Ghz fully stable. 1.6Ghz is also working although not as common. It is easier to use it if you select 1.6Ghz as the ONLY frequency but of course battery life will be affected.
So, start at 1.2Ghz and try to achieve stability with the lowest possible UV settings you can get to improve your battery life then when fully stable, go for a bit more speed if you like until you find your limit.
Process:
The following is the process I use to get 100% stability. Of course, you can use your own or tweak as you like as this is hardly the ONLY TRUTH of overclocking…I just hope it gives you a good idea on how to achieve stability.
I normally use these settings for 1200Mhz:
1200Mhz @ -100
1120Mhz @ -100
1000Mhz @ -100
900Mhz @ -100
800Mhz @ -100
400Mhz @ -100
200Mhz @ -100
100Mhz @ -100
After setting those up , click the Apply Now button but do not save to the Boot settings until you are sure they are stable for you.
To check stability I first run the Stability Test program and let it loop about 30 times or at least 20 of the CORE (not the RAM).
If it fails give it another shot if it fails again then it is time to adjust the voltages for 1200Mhz.
My experience has been that Stability Test crashes to the home screen when it needs more voltage so if it crashes for you change the UV to -75 and test again.
When you are able to pass that test , you can go to Neocore and try looping Neocore and let it running for about 5 to 10 minutes.
If Neocore freezes, at least for my phone, it means that voltage is too high so I need to drop the UV.
Right there is where the whole trick is. Trying to find what UV voltage is enough for Stability Test to pass but still low enough so that Neocore does not freeze.
This takes a lot of trial and error specially when going for 1.4Ghz!
Another thing is that the UV setting for the frequency below the one you are going for, like 1120 and 1000 for example, do have an effect on the stability you are trying to achieve on 1200Mhz because the phone does not seem to like big voltage jumps .
Some times changing the voltage for the frequency below the one you are adjusting is a good way of achieving stability.
This becomes more important when for example you find out that changing 1.2Ghz to -50 gives you stability for Stability Test but then you need -75 in order to pass Neocore test. What do you do then? What I have done with relative success is , use -75 but then increase the voltage to the frequencies below 1200.
For example if I had
1200Mhz @ -75
1120Mhz @ -100
1000Mhz @ -100
I would change it to:
1200Mhz @ -75
1120Mhz @ -75
1000Mhz @ -75
then test Stability Test to see if those changes help you pass it without having to increase the voltage for 1.2Ghz directly thus avoiding the Neocore freezing issue.
Another process some users are doing is just run Neocore for about 30 minutes and it seems to be a good alternative for some. Guess it all depends on your particular phone.
So, as you can image, this means a LOT of trial and error and restarts of your phone. For 1.2Ghz it should be painless but if you want to go higher, prepare to do a lot of the steps above.
Another thing to consider is that some phones seem to work better with kernels that only have one top speed after 1Ghz as opposed to kernels that offer multiple speed options so this is yet another variable to work with.
Also, remember that to restart your phone, there is no need to pull out the battery. Just press and hold the Volume Up and Power button and it will restart.
I am sure this guide can be done a lot better and will be glad to add or edit with any recommendations you can offer.
I hope this helps some of you trying to push your phones to the limits and have fun!
UPDATE for CM7 Users
With CM7 what we considered THE holly grail of speeds, 1.4Ghz with Froyo Roms suddenly became a VERY common thing.
I have no explanation as to why but a LOT of users are able to get 1.4Ghz and even 1.5Ghz perfectly stable on CM7 and the phones just fly at those speeds. Some are also able to get 1.6Ghz stable but that is harder.
Setting only one speed like 1.6Ghz dramatically increased the stability as well. Just a hint for you guys wanting to do some benchmarks.
You can use a program like Pimp My CPU or Voltage Control to set the voltages and the Maximum and Minimum speed.
Now while the Steps at the beginning of the guide (for Froyo roms) should be fine for CM7 as well ...I have noticed, at least with my phone , that a video player called Moboplayer is VERY good for stability testing CM7. In fact, I do not even use Stability Test any more since I moved to CM7.
When the voltage is a bit low on my screen it creates some artifacts, usually green spots that come up and go in random areas until it freezes.
My actual favorite player for CM7 is Dice Player because for me it plays 720p files better but I like moboplayer a lot as well specially because of the artifacts it shows when I am not stable so it is a quick way to tell the settings are not going to work.
Another thing I love to use if the Riptide Game (tegra 2 game) with Chainfire 3D plugin to make it work on our phones. That game will just close without warning when my speed is unstable. So I just let it running the demo on its own for about 10 minutes.
So basically, I use Moboplayer and Riptide to test my stability and with those tests my system is ready to go and takes less time than the steps I used to do.
Of course you can come up with your own preferred tools since our phones are quite unique and seem to have their own personalities.
It seems some users are having luck with my settings so here are my settings for 1.6Ghz This is for GLITCH kernel (V10C VC). Remember that each kernel has different voltages so instead of giving you a minus value like -100 I will give you the actual voltage I am using for each speed.
1.6Ghz - 1425mV
1.5Ghz - 1400
1.44 - 1325
1.4Ghz - 1325
1.3Ghz - 1275
1.2Ghz - 1275
1.0Ghz - 1200
800Mhz - 1100
400Mhz - 950
200Mhz - 850
100Mhz - 850
For Governor I normally just have Smartass and the Scheduler is NOOP.
Not that while for 1.6Ghz my current setting is either -50 or -75, if I were to select only 1.6Ghz as my max and minimum speed, I am then able to lower the voltage to -100 perfectly stable. Just an interesting thing for you to play with.
Important Note for CM7 users getting many FCs like google service or android service.
CM7 has a much smaller data space for application installs and every time I get to that limit my phone gets crazy with FCs. You can check that by going to your applications and launching the TERMINAL application then type df (in lower case) and pressing Enter.
Look at the top table listed for /datadata and make sure you have some available space.
As long as I keep that from filling up (in fact I prefer to keep it around 60% max to give me some room) my phone works like a charm.
You can use an app like APP2SD to move application data to the SD card to free up space.
Have fun and enjoy your pumped up phone!
UPDATE 12/30/2011
CyanogenMod 9 (ICS) users with Glitch kernel using LiveOC you can use my settings as a starting point.
This is what I use for 1603Mhz
Voltages:
ARM voltage
from 1500 to 1200 = 1.5V ; 1000 = 1.375V ; 800 = 1.250V ; 400=1.100V ; 200=950mV ; 100=900mV
Int from 1400 to 1200 = 1.2V ; 1000 = 1.15V ; 800 = 1.125V ; 400=1.100V ; 200=1.100V ; 100=1.000V
Then 123% LiveOC using 1300MHz step (giving you 1.6GHz)
Governor I am still testing but usually Smartass V2
You can of course use it as a starting point for lower speeds if you like.
Nice man. Saves alot of frustration with this.
Awesome! Thank you!
You are the OC master, Shaolin.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
I wish I was a master indeed but I just have a lot of patience I guess to test ..and test...and crash..an test some more
I think I saw a post that said that any temperature below 56 degrees Celcius is fine for the captivate. I still start to worry though if it reaches 50 during a stability test, what's your opinion?
I noticed that mine when it its 50C or so for any reason (battery temp IIRC) it stops charging so that is where I normally draw the line. If I cannot keep it under that I dont feel comfortable.
That 50 is pretty high, at least for me. Even with stability test going for an hour or so at 1400, I only hit 46. Haven't seen anything higher
Sent from my SAMSUNG-SGH-I897 using XDA Premium App
Depends on ambient temp of course...you cannot compared devices temps without knowing the ambient temp. In any case, I saw that when I was using the first Trident kernel. That one even made my screen feel very hot...kinda scary lol
Right now, the only app I have that makes my phone stop charging, even when temp is low, is the Justin TV viewing app....weird. I even ran the phone at 600Mhz only to make sure.
AReynante said:
That 50 is pretty high, at least for me. Even with stability test going for an hour or so at 1400, I only hit 46. Haven't seen anything higher
Sent from my SAMSUNG-SGH-I897 using XDA Premium App
Click to expand...
Click to collapse
I was testing out 1500 1400 is fine for me with -100 for each value. 1500 is a different story since I haven't managed to find a stable combination yet (that doesn't reach 50 degrees Celcius).
Sweet. Are you getting to 50C with a specific app? I only get there with some streaming apps but I really only use 1.5 for fpse emulator for example.
I don't have an app that tells me the temperature so the only time I know is if I do a stability test. I'm not sure if I really have a need for 1500MHz since I don't use emulators much but it's more of a "yea my phone can do it" kind of accomplishment - unless I'm missing out on some other benefits of 1500Mhz over 1400Mhz besides possibly more smoothness.
zuN! said:
I don't have an app that tells me the temperature so the only time I know is if I do a stability test. I'm not sure if I really have a need for 1500GHz since I don't use emulators much but it's more of a "yea my phone can do it" kind of accomplishment - unless I'm missing out on some other benefits of 1500Ghz over 1400Ghz besides possibly more smoothness.
Click to expand...
Click to collapse
Lol 1.5 terahertz I want that phone!
studacris said:
Lol 1.5 terahertz I want that phone!
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Click to collapse
Wow didnt notice that....thats Fing awesome!
Stability Test question
Hey Shaolin,
Just a quick question here, when you mention running stability test through 30/50 runs, are you referencing the RAM runs or the core runs? Just checking, since the RAM runs complete within a few minutes whereas the core runs take closer to half an hour, etc.
Thanks for posting the guide, much appreciated!!!
Since the new version I am only doing 30 of the core runs since it seems to take longer than before.
You are welcome amigo
shaolin95 said:
Since the new version I am only doing 30 of the core runs since it seems to take longer than before.
You are welcome amigo
Click to expand...
Click to collapse
Hey mate, maybe you can add this to your guide as I thought before that stability test and several runs of new core, nenamark, etc...that after passing those tests you're probably stable but what I found out that I can pass those tests without problems and just recently those test are not enough for you to be sure if you are really stable what I have found is to run or record in your phone video cam in its highest resolution about 720p for 200mb worth of data if your phone won't freeze then it's pretty stable you can delete those files afterwards.
Indeed each phone and user can find specific things that work for them, for example with my phone I can just use mobo player and play some videos and I get artifacts when voltage is low or I had a game that with low voltage will always freeze at the same spot yet some user do not have the same effect.
I guess I can add a small list of other possible quick tests like that video one you mentioned as alternatives
I found out another way to test stability which is to do a batch operation of backing up apps with TiBu. I'm not sure what it implies if it crashes though
Hi shaolin95, can I link this post in my VoltageControl thread? (with credits ofc)
Just downloaded SetCPU and I'm ready to Under/Overclock! Would you guys mind posting your most successful settings? I've also got Voltage Control if you would like to use that.
I'm mostly interested in Underclocking to save battery life(with Voodoo enabled this phone runs fast as hell anyway!) but I would also appreciate your overclock settings just in case I decide to OC in the future. Thanks!
Haven't overclocked but I just under'd to 800mhz and it's working fine, I'll probably stay at this voltage for best performance and battery life hybrid Only made this thread because I didn't really want to crash my phone or cause any problems as I've seen happen to some people.
100-1400 mhz, -50mv across the board
With voltage control:
1000 -75 (1200mv)
800 -100 (1100mv)
400 -125 (925mv)
200 -125 (825mv)
100 -150 (800mv) maybe a lil unstable???
On pbj-oc kernel
dalvik cache=64mb
max events=95
wifiscan=180
Seems to work fine for me...
{SDCharge Humb£e 1.25}
Just a side note, 800mhz seems like a great processor speed. My phone never gets hot or even warm anymore, in fact it feels like it's air conditioned! Not only that the battery life is great now and it doesn't even seem any slower. **** overclocking!
My understanding is most people prefer Voltage Control, but SetCPU allows for specific under/overclocking profiles that can increase performance without killing battery life.
If someone could direct me to popular, trusted settings, I'd appreciate it. I'm not a heavy user or power user, so I'm looking for something that just works well. I don't care about benchmarks and things of that nature.
I'm sure this has been discussed, but I was unable to find posts that didn't concern user-specific issues.
Thanks,
Wyatt
EDIT: 53 views and no replies. I guess I'll experiment for myself. Wish me luck!
gnarlynewport said:
EDIT: 53 views and no replies. I guess I'll experiment for myself. Wish me luck!
Click to expand...
Click to collapse
That's really all it comes down too...experimenting and finding out what works best on YOUR phone with YOUR configuration...
GOOD LUCK!
ps... have been very stable with OC'd to 1.4
-25 down too 200
-100 on 100
bfq and conservative
I use VControl myself...i like the UI.
For Performance: 100-1.4GHZ (1.5 works too, but is WAY overvolted, and 1.6 is extremely unstable), -100mV from 100-1000 MHZ, -75 for 1.1-1.4GHZ.
For "Battery Life": (i really don't see a difference...) 100-800 MHZ (anything below 800 is painfully slow), -100mV across the board.
I leave schedulers and governors at their stock settings, the only time I change anything is to set the gov. to Performance on Performance for max Quadrant scores.
kvswim said:
I use VControl myself...i like the UI.
For Performance: 100-1.4GHZ (1.5 works too, but is WAY overvolted, and 1.6 is extremely unstable), -100mV from 100-1000 MHZ, -75 for 1.1-1.4GHZ.
For "Battery Life": (i really don't see a difference...) 100-800 MHZ (anything below 800 is painfully slow), -100mV across the board.
I leave schedulers and governors at their stock settings, the only time I change anything is to set the gov. to Performance on Performance for max Quadrant scores.
Click to expand...
Click to collapse
How many Mhz levels are you selecting? In my experience anything above 5 and it WILL NOT clock up to the higher settings. Maybe thats why you notice no difference in battery life?
For instance if you had say 100, 200, 400, 800, 1000 and 1400 you will reace 1000mhz only
if you had 100, 200, 400, 800, 1400 you would reach the 1400mhz. ive tried many combos and 5 or less was the max it would use (voltage control app, im sure setcpu would most likely be the same)
How many slots does the imnuts kernel support?
Sent from my SCH-I510 using Tapatalk
I started using SetCPU, and I think I prefer it.
Quick question, it seems like rebooting is unnecessary for the changes to take effect, is that true?
Overclocking definitely worked. I got 1853 @ 1200mhz in Quadrant, up from 1600.
Edit: now 2025 @ 1300mhz / 1300mhv
2nd Edit: Late last night, I was using a stability test in one of the apps, but I can't for the life of me remember which app or how I found it. Now I'm using StabilityTest from the market. What's a safe cpu temp for these phones? I'm getting 32 degrees under full load in an air conditioned environment.
gnarlynewport said:
I started using SetCPU, and I think I prefer it.
Quick question, it seems like rebooting is unnecessary for the changes to take effect, is that true?
Overclocking definitely worked. I got 1853 @ 1200mhz in Quadrant, up from 1600.
Edit: now 2025 @ 1300mhz / 1300mhv
2nd Edit: Late last night, I was using a stability test in one of the apps, but I can't for the life of me remember which app or how I found it. Now I'm using StabilityTest from the market. What's a safe cpu temp for these phones? I'm getting 32 degrees under full load in an air conditioned environment.
Click to expand...
Click to collapse
I just switched over to Setcpu as well. It seems to work better for me also. I can now select 6 levels instead of the 5 before in voltage control and I also noticed that the set on boot on voltage control did NOT work but it DOES work in setcpu!! Im happy!
Haven't tried Setcpu yet, but I preferred Pimp my CPU over VC when I was using Miui on the Fascinate.
Sent from my SCH-I510 using XDA App
I'm sure I'm not the only person but changing the clock speed/voltages is pretty damned confusing, voltages specifically. I never saw the point to overclocking(not yet at least, nothing really needs it) but lowering the voltages to save battery life is something I'm really into I just don't get how these voltages work at all.
Could someone post a quick walkthrough on it? I don't need your exact settings since I know it varies from person to person but a guide would be nice. I can change the clock speed, it's pretty simple and I used VControl to modify the speeds to 800mhz in both advanced & general but nothing else. Voltages scare me.
Just play around with it. The worst you can do is freeze the phone, nothing a hold of the power + volume up can't fix.
I recommend starting at -25 across the board and increasing slowly until you get a freeze so you can find the best balance between stability and battery savings for your phone.
Sent from my SCH-I510 using Tapatalk
As long as you don't OVERvolt your phone your hardware will be fine, although this isn't an issue since only VControl Extreme overvolts. Worst case scenario: your phone reboots because it doesn't like you taking away its power juice.
On stock clocks (100-1000 mhz) my phone can do -100 mV, anything above that -50. YMMV however, even "identical" processors have different tastes, ie one will take a beating while another is super fragile.
Sent from my Droid Charge running GummyCharged 2.0
How would this work?
800mhz -50v
600mhz -50v
400mhz -75v
200mhz -75v
Would that save more battery or should I reverse the voltages? I don't get how voltages work exactly, that was my main question
blarrick said:
How would this work?
800mhz -50v
600mhz -50v
400mhz -75v
200mhz -75v
Would that save more battery or should I reverse the voltages? I don't get how voltages work exactly, that was my main question
Click to expand...
Click to collapse
-75 means that it takes 75 mv off of the stock voltage setting. That should work, assuming your processor accepts that much under.
Sent from my Droid Charge running GummyCharged 2.0
kvswim said:
-75 means that it takes 75 mv off of the stock voltage setting. That should work, assuming your processor accepts that much under.
Sent from my Droid Charge running GummyCharged 2.0
Click to expand...
Click to collapse
Yeah everything is running fine, quadrant scores of 900 with ext4 begs to differ.. lol. Will overclocking drain more battery? I'd assume it would only affect battery when I'm using an intensive app like the browser that would actually utilize the higher CPU speed.
blarrick said:
Yeah everything is running fine, quadrant scores of 900 with ext4 begs to differ.. lol. Will overclocking drain more battery? I'd assume it would only affect battery when I'm using an intensive app like the browser that would actually utilize the higher CPU speed.
Click to expand...
Click to collapse
It'll stay at the lower settings until an app demands processing power. You will see a slight battery hit but a performance increase.
EDIT: I got 1224 @ 800 mhz.
EDIT: 2100 @1400 mhz. So you can see the performance changes drastically.
Sent from my Droid Charge running GummyCharged 2.0
When on froyo I run this
-25 1200
-50 1000
-50 800
-50 400
-75 200
-75 100
kejar31 said:
When on froyo I run this
-25 1200
-50 1000
-50 800
-50 400
-75 200
-75 100
Click to expand...
Click to collapse
Appreciate all the answers but this was what I really needed, I wasn't sure if I needed to increase or decrease the voltage as the clock speed changed.
Still, thanks to everyone for the information.
1300 - 0 conservative
1000-25
800 - 50
400 - 75
200 -100
100 - 125
Still experimenting. Next charge I will try another governor. Also might try dropping the voltage more on 400 and 800 steps.
Sent from my SCH-I510 using XDA App
PeterGunz said:
1300 - 0 conservative
1000-25
800 - 50
400 - 75
200 -100
100 - 125
Still experimenting. Next charge I will try another governor. Also might try dropping the voltage more on 400 and 800 steps.
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
That's some mega voltage drops for 200-100mhz! I'm assuming that would just save some battery life when your phone is idle because I can't imagine any app only using 100mhz.
I am trying -75 mV across the board on stock voltages. No issues so far. Is there any reason to bump the higher speeds up in voltages? Ran a quadrant and I'm still scoring the same as before undervolting.
quantim0 said:
I am trying -75 mV across the board on stock voltages. No issues so far. Is there any reason to bump the higher speeds up in voltages? Ran a quadrant and I'm still scoring the same as before undervolting.
Click to expand...
Click to collapse
Voltages have nothing to do with performance. It's all about clockspeed.
Sent from my Droid Charge running GummyCharged 2.0
blarrick said:
That's some mega voltage drops for 200-100mhz! I'm assuming that would just save some battery life when your phone is idle because I can't imagine any app only using 100mhz.
Click to expand...
Click to collapse
I am not 100% sure, but I think the bottom steps are similar to PBJ. The only downside I used to get with UV the fascinate that low was that it would either not wake up from sleep sometimes, or calls and texts wouldn't come through unless/until the phone was woken up. Phone doesn't use much power when sleeping, but it is difficult to curb with 4G on.
This phone, in my experience thus far compared to the fascinate, can be OC'd way higher for me and be stable, and can also be undervolted across the board more successfully.
Governors I know nothing about, but have been doing some reading. Still not 100% what each one does. I usually don't OC, but it has been outstanding on this phone thus far.
I use noop and ondemand.
1400 -75
1200 -25
1000 -50
800 -50
400 -50
200 -75
100 -75
hazard209 said:
I use noop and ondemand.
1400 -75
1200 -25
1000 -50
800 -50
400 -50
200 -75
100 -75
Click to expand...
Click to collapse
I literally have no clue what noop/ondemand do, I just left it to ondemand.
hazard209 said:
I use noop and ondemand.
1400 -75
1200 -25
1000 -50
800 -50
400 -50
200 -75
100 -75
Click to expand...
Click to collapse
why didn't you use 1400 1200 1000 800 600 400 200? it looks prettier lol
blarrick said:
I literally have no clue what noop/ondemand do, I just left it to ondemand.
Click to expand...
Click to collapse
noop is the IO scheduler and ondemand is the governor. Imoseyon did some tweaking to ondemand, so that's why I use that versus other governors. I find that noop is more stable for me.
maurogg84 said:
why didn't you use 1400 1200 1000 800 600 400 200? it looks prettier lol
Click to expand...
Click to collapse
It's about stability and what the phone requires of it's resources. Lol. Not OCD perfection.
Can you change the IO scheduler on set CPU? I know you can on voltage control.
Sent from my SCH-I510 using XDA App
kejar31 said:
When on froyo I run this
-25 1200
-50 1000
-50 800
-50 400
-75 200
-75 100
Click to expand...
Click to collapse
^^this but I add the 1400 step at -25 as well... my phone doesn't like being undervolted past -25 on any step above 1000
I am using:
Rom: Insertcoin
Kernel: Bricked 1.5
Could you give me some tips to setup the best way setcpu.
I've seen some guys mentioning setting lowest frequency to around 400 and etc. and I don't know why. Could you give me some advice on setting up the program correctly.
Hi, I personally set the lowest frequency to somewhere around the 500mhz and smaller and set the govenor to ondemand as this will only use the the speed of your kernel when its needed thus, will use less battery.
Why around 500mhz and not 194. And will 5 sec refresh on the widget drain much battery? It's now on passive because I don't want to loose battery on bull****.
SsBloodY said:
Why around 500mhz and not 194. And will 5 sec refresh on the widget drain much battery? It's now on passive because I don't want to loose battery on bull****.
Click to expand...
Click to collapse
I put at 500mhz because sometimes the phone may slow down on its own and I don't think that setting the refresh rate to 5sec will steal much battery because its only a small widget
Any more opinions? Would be nice
Don't set it to 500 minimum. This will lock the phone to at least 500 mhz at all times and will cause substantial battery drain.
Go with 192 minimum or the next step up.
Sdobron said:
Don't set it to 500 minimum. This will lock the phone to at least 500 mhz at all times and will cause substantial battery drain.
Go with 192 minimum or the next step up.
Click to expand...
Click to collapse
+1 on that.
My personal settings (most of the time) are:
Screen On 192/648
Screen Off 192/384
Governer OnDemand
Sometimes I up the frequency if I need to run something heavy, not all that often though.
agreed 192 minimum is much better. if you are having issues with the phone being slow then get rid of sense...
Just wanted to say thanks to the three users above this post as I tried 192mhz and it is in fact a lot better now (please realise I've only just turned 17 and play a lot of games hence 500mhz)