[Q] RAM size: where is it defined? - Galaxy Y GT-S5360 General

There's 290MB RAM available but probably 384MB physical. Is this limitation somewhere in non-changeable ROM defined or is there a chance to increase it?
Edit: corrected 512 to 384 MB.

wow...are you sure. how did you know that?

Sorry, I misread it. Probably 384MB according to service manual. Updated first post.

my sister has galaxy mini with default ram 384mb. when she changed the rom to gingerbread the ram became 290mb. It could be something related with the rom as you've said.

i read that some ram is reserved for GPU you can decrease or increase that number but im not really sure of the results

Yeah, but where can I decrease it? I've also read somewhere that there's also some memory reserved for the camera.

i think the RAM memory is shared with the GPU, because it will be too large to put another memory chip for the GPU..

Related

rom with 192Mb RAM/// Why not?

Last many time but anybody and couldn't activate 32Мб RAM which locked in our devices. Why? If we had these 32Мб then it would be possible to use Sense 2,5 and windows 6,5. It is assured to that developer which will unlock RAM the people it will be grateful and will sacrifice some money
The reason that you cannot use all the ram is that 32mb is reserved for the graphics chip.
Edit: Sorry, etoy is right, my mistake, it is 64mb for the graphics chip
tomascivinod said:
The reason that you cannot use all the ram is that 32mb is reserved for the graphics chip.
Click to expand...
Click to collapse
32 mb for a graphic chip, on a mobile device, is a lot
Maybe it would be nice to reduce this to 24mb or 16mb
i'm just guessing i don't really know if my suggestion makes sense, and if it's possible
from what i read from htc diamond details:
"Dedicated graphics chip (64MB RAM reserved for graphics)"
does the chip have its own 64 MB RAM or is it taken from the 192 MB RAM
HTC Touch Diamon have 256MB Ram (64 reserved for GFX) 192+64=256 same memory as HTC Touch Diamond CDMA P3051 have 256 ram and 256 rom (not gfx acceleration no 64mb reserved).
if 64Mb reserved for GFX, why we have not 32Mb RAM? can we resize memory for GFX?
after that you will buy another diamond!
Look here
Don't you think it would have been done already if it was a good idea or even possible? We are on the brink of getting android to work albeit with a 900(Meh) battery.
Even beter than the installed ROM in memory phone, rom be installed in internal storage (4GB) then it would be given a lot of free memory.

Only 477mb RAM?

I noticed my phone has only 477 MB of RAM, should not be 512?
I'm on CM7.2 12 feb nightly.
nothings ever a s much as it's quoted ^^
my SD for example is suppose to be 8GB... but it says 7.4GB
& why are chip packets only a third full!? :FFS:
Bleak3993 said:
I noticed my phone has only 477 MB of RAM, should not be 512?
I'm on CM7.2 12 feb nightly.
Click to expand...
Click to collapse
Some part of the ram is occupied by the Android Operating System..
so obviously it shows less than the actual RAM...
size is bluff
King_Rat said:
nothings ever a s much as it's quoted ^^
my SD for example is suppose to be 8GB... but it says 7.4GB
& why are chip packets only a third full!? :FFS:
Click to expand...
Click to collapse
this size difference is coz companies bluff with MB & GB values..while we consider 1M=1024K, 1K=1024 for digital devices, companies calculate with 1M=1000K, 1K=1000 units
ultimately when u have 8GB SD card you consider 8*1024*1024*1024 Bytes but actually its 8*1000*1000*1000 Bytes = 8000000000 Bytes
thus you get (((8000000000)/1024)/1024)/1024) = 7.45 GB
I think that some RAM is taken by the graphics chip, just like all the integrated graphics chips do when they don't have their own RAM
Just my thought, although I could totally be the one who's wrong
Cheers, you buddies
niksy+ said:
I think that some RAM is taken by the graphics chip, just like all the integrated graphics chips do when they don't have their own RAM
Just my thought, although I could totally be the one who's wrong
Cheers, you buddies
Click to expand...
Click to collapse
My thoughts precisely..
niksy+ said:
I think that some RAM is taken by the graphics chip, just like all the integrated graphics chips do when they don't have their own RAM
Just my thought, although I could totally be the one who's wrong
Cheers, you buddies
Click to expand...
Click to collapse
if you have GPU (defy has a powervx) don't needs memory from RAM.... is taken by OS (android).
i understand, thanks you, but some users post screenshots of they system info, and the ram shows exactly 512, the total ram obviously, not the used one.

512 RAM Hacking

I know that RAM is in the SoC but... maybe someone could find a way to increase the RAM of this from 512 to 1024... I believe this is the only drawback of this tablet
MiSSigNNo said:
I know that RAM is in the SoC but... maybe someone could find a way to increase the RAM of this from 512 to 1024... I believe this is the only drawback of this tablet
Click to expand...
Click to collapse
Without replacing entire SoC there is no way.
Only thing that could help is swap or zram (compressed swap in ram)
gen_scheisskopf said:
Only thing that could help is swap or zram (compressed swap in ram)
Click to expand...
Click to collapse
Can you explain us more about his?
My archos 101G9 has only 433Mb RAM

[Q] How increase RAM in JB..??

Hi All
after upgarde from GB to JB (either LEAK / Official), JB seemed Slow. whether to change the partitions on a flash PIT file MB2 / 4 can increase the RAM capacity in JB.
I found a thread where we can change it by using the application PIT "PIT_Magic".
but I do not understand how its use. if anyone can to using it please share...
Thanks
Original Thread PIT MAGIC
rozyid said:
Hi All
after upgarde from GB to JB (either LEAK / Official), JB seemed Slow. whether to change the partitions on a flash PIT file MB2 / 4 can increase the RAM capacity in JB.
I found a thread where we can change it by using the application PIT "PIT_Magic".
but I do not understand how its use. if anyone can to using it please share...
Thanks
Original Thread PIT MAGIC
Click to expand...
Click to collapse
You cant do that!there is about 140MB unused ram in stock firmware. in order to increase ram and use full of it ,you sould have uncompiled kernel source and know android kernel programming and change it.
but always you can change your phone partition sizes through PIT Magic while falshing.
kernel source
sorset said:
You cant do that!there is about 140MB unused ram in stock firmware. in order to increase ram and use full of it ,you sould have uncompiled kernel source and know android kernel programming and change it.
but always you can change your phone partition sizes through PIT Magic while falshing.
Click to expand...
Click to collapse
Hi Sorset
maybe we can help to hafidzduddin to edit the kernel in order to read that we change the RAM to 1 GB .. ..
From where you flashing JB? From GB or JB XXMB4?
edit PIT to get 1gb RAM
ddikodroid said:
From where you flashing JB? From GB or JB XXMB4?
Click to expand...
Click to collapse
from JB MB4
i just Edit PIT FILE on MB4 to get RAM 1 GB, but I have not dared to try it..
I am still gathering information about the RAM partition address....
1 GB? ~768MB is enough for me. Though i really think that it can't go over 700+MB.
1 Gb? WTF?
Our device doesn't have true ram? I thought that we have some sort of LDDR2 ram and it's quite different from it's flash NAND.
I think you can't go over installed 768 mb and you can't even reach this number because gpu also use the same ram.
I hope Samsung didn't put the ram on storage because it will wear out like hell. NAND it's not fast, not even prone to multiple write cycles.
Even if you're successful in increasing you ram, you will make something like swap partition on linux. But I highly doubt it will work.
Swap system is not used on mobile devices because NAND wears up too fast.
According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
It may be true regarding memory size of ACE 2:
system 1,2 + USB 1,1 + 0,768 + spare for dead cells = 4GB
SIII Mini for example have 1GB RAM and I/O and RAM operations are much much faster. Also there are no 768MB LDDR2 chips on market. Using emmc as low speed LDDR2 substitute is quite common in Samsung devices.
arroyo said:
According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
It may be true regarding memory size of ACE 2:
system 1,2 + USB 1,1 + 0,768 + spare for dead cells = 4GB
SIII Mini for example have 1GB RAM and I/O and RAM operations are much much faster. Also there are no 768MB LDDR2 chips on market. Using emmc as low speed LDDR2 substitute is quite common in Samsung devices.
Click to expand...
Click to collapse
I thought this was a joke at first when rozyid said we can increase our RAM
so it was 601MB system + 302MB cache + 1,2GB data + 1,1GB usb = ~3,2GB
It will make sense if the remaining is our "RAM"
if somehow someone able to increase this by resizing other partition (/cache maybe?) it would be really nice
And btw, what is the function of /cache? When I checked it using link2sd it wasn't used
But hey, didn't we used another partition /preload in JB? If I'm not wrong it was about 200MB, right? So then it be more than 4GB if we add it to previous calculation
Sent from my GT-I8160 using xda app-developers app
[Noob] For example wont decreasing the RAM on the device increase the "ram" allocated to the GPU thus increasing our gaming performance in any way?
S3 mini RAM score is only 10% faster in antutu, either S3 mini doesn't have true RAM or our device has one.
I think you've added up incorrectly here. 4GB is usually 3.7gb total.
Also, if you looked in the PDF's from one of the links above, you would notice we do in fact have LP-DDR2 ram...
arroyo said:
According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
Click to expand...
Click to collapse
I was very confused when you wrote this. It's absolute non-sense to use NAND as RAM. It will wear in only one month.
They should have at least the most creepy ram, cache or something else that it can be re-writable.
You can have smooth gui with no RAM installed. It's impossible. You can't draw 20000 triangles per frame and having decent framerates without having a ram that it's capable of speed near 1 Gb/s ...
Also usually memory came in banks, 256 Mb banks were usual in the past, so puting 3 banks can give you 768 MB.
@Jamielawther
I would love that fact to be truth, but this diagram is not hardware schematic. It is logical diagram how things push data between elements. Move couple pages further and try to find element for LP-DDR2 on PCB. I did not found one. Also in document 05-GT-I8160-EPLIS-11.pdf you have the list of electrical parts. I did not found SEC Code for anything that could be LP-DDR2.
@veaceslaw
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.
arroyo said:
@veaceslav
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.
Click to expand...
Click to collapse
Can you find the U8500 chip?
veaceslav said:
Can you find the U8500 chip?
Click to expand...
Click to collapse
UCP300
arroyo said:
UCP300
Click to expand...
Click to collapse
http://forum.gsmhosting.com/vbb/archive/t-1363562.html
UCP 300 is RF chip and I don't know what rf is, but it's in GT i9100 and I don't think i9100 have Novathor
if you do it guys it would be awesome
because all good games with best graphics lags
i even dont want to get back to this ugly outdated gingerbread
arroyo said:
@Jamielawther
I would love that fact to be truth, but this diagram is not hardware schematic. It is logical diagram how things push data between elements. Move couple pages further and try to find element for LP-DDR2 on PCB. I did not found one. Also in document 05-GT-I8160-EPLIS-11.pdf you have the list of electrical parts. I did not found SEC Code for anything that could be LP-DDR2.
@veaceslaw
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.
Click to expand...
Click to collapse
Anyone bothered to look through the documentation?
If you check 08-GT-I8160-TSHOO-7.pdf on the first page you can see the block diagram and there you can see stated LP-DDR2.
Check the attached picture.
If same chip is being used as RAM, then what is the benefit of moving data from on part of same memory to another? Won't that reduce io speed, cos I thought the purpose of RAM is to speed up data access for CPU from normally slower data storage eg. Hard drive.
Sent from my GT-I8160 using xda app-developers app

[Q] Galaxy S3 RAM Memory

I have the Galaxy S3 SGH-L710 (Virgin Mobile)
I used the CPU-Z app to view the hardware info.
CPU-Z reported that my Ram memory is 1.57 GB (1579 MB)
This model phone is suppose to have 2 GB of memory.
Just wandering if it's an indication of bad memory, or a software glitch or if it's something else.
Can anyone with same model post here and let me know what you get.
See if you have same reading as me. Thanks.
I believe some RAM is allocated to system files on boot so that the phone can start up. Also, the amount of physical space on a chip is different than the space a system can use. For instance any flash drive you get that is advertised as having 16 GB of space, actually has about ~14-15 GB, because they say that it has 1.6 billion bytes (or whatever the number is), but there are 1024 kb in 1 MB, and 1024 MB in 1 GB, plus the space needed for driver files lowers the total amount of space available to what you see. So all of that is probably what amounts to what you're seeing, I'm not an expert nor am I a developer, but I've looked into these things a bit.
Plus, you could just google search "why is my phone's ram less than it's supposed to be" and get a clearer answer!
Thanks for your response. That explains things.

Categories

Resources