Database Users

[Q] RAM amount

Hello,
I just bought a nexus 10 and I have a question about the RAM amount. It's supposed to have 2GB of RAM but in my device it show only 1.23GB....
Is it normal? In my nexus 4 it shows 1.83GB.
Thanks and best regards.

Forget it. I just read that 800MB from the RAM are reserved for the GPU. Like a ****ing laptop...

Uhh...
http://forum.xda-developers.com/showthread.php?p=40030815
http://forum.xda-developers.com/showthread.php?t=2204404
http://forum.xda-developers.com/showthread.php?t=2146679
http://forum.xda-developers.com/showthread.php?t=2146554
http://forum.xda-developers.com/showthread.php?t=2008146
Edit: took me too long haha

the_boo said:
Uhh...
Edit: took me too long haha
Click to expand...
Click to collapse
Thank you very much for your time.

2 gb = big lie from manufactures
400 mb = true
Sent from my Nexus 10 using xda app-developers app

samwheat said:
2 gb = big lie from manufactures
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Click to collapse
Not really. They are telling the truth that there is 2GB of RAM installed. Just hate that almost half of it isn't usable by the intended purpose...
Should of just thrown 2.8GB of RAM on the board and gave 800MB directly to the GPU.

It isnt just the Nexus 10 that has this shared memory, most phones and tablets do. There are specific chipsets that have their own dedicated vram, like Tegra 3. Having dedicated vram chips has to do with how the memory controller is designed in the chipset architecture.

So 2GB RAM are only 1,8 GB, Sony uses its own values for marketing and counting?

Just seen that.
They advertise the compact as a 2GB RAM device, knowing that they only deliver 1,8 GB.
Anyone else seen that before?
I do not think it s a way to free up to full 2GB as advertised?
Other brands deliver 2GB if they tell their devices have, why not so z5 compact?

punkrockfan said:
Just seen that.
They advertise the compact as a 2GB RAM device, knowing that they only deliver 1,8 GB.
Anyone else seen that before?
I do not think it s a way to free up to full 2GB as advertised?
Other brands deliver 2GB if they tell their devices have, why not so z5 compact?
Click to expand...
Click to collapse
Where's the source on what you're talking about? The RAM is always going to be used up by something - the OS, launcher, etc. You're not going to turn the phone on and have exactly 2GB of RAM available.

Sure, but it says 1,4 out of 1,8 used, 3xx free.
That means Limit is 1,8 as shown under Memory, not 2 as advertised. Never noticed that on a phone before.
As soon as the device is running memory is used, but it should say out of 2,0 not 1,8?

@punkrockfan
you're a little late to the party
http://www.disk-space-guide.com/size-units.aspx
https://en.wikipedia.org/wiki/Gigabyte
https://blogs.gnome.org/cneumair/2008/09/30/1-kb-1024-bytes-no-1-kb-1000-bytes/
http://superuser.com/questions/287375/what-is-the-origin-of-k-1024
https://en.wikipedia.org/wiki/Timeline_of_binary_prefixes
Also - not sure why you'd want to specifically blame Sony for this
Coming from the technical, developer background:
you have to consider that device drivers also eat up quite some memory/storage (best example: the Galaxy S, GT-i9000: 512 MB advertised, at best 300 [384 at best] available)
it's only the device drivers, it's the kernel (system) itself that also needs memory
so you'd basically have to advertise e.g. 2 GB but plug in 3 or even 4 GB to have full access for e.g. apps

All companies define a gigabyte to be 1000MB, and a megabyte to be 1000kb, etc etc. In reality it's 1024KB per MB, and 1024MB per GB.
You never fully get 2GB, just check your computer eg. your hardrive might be 1tb big, but in reality its only somewhat over 900gb? 16gb ram might only be 15.9 gb!

Well, nice, not sure since when vienna is germany?

punkrockfan said:
Well, nice, not sure since when vienna is germany?
Click to expand...
Click to collapse
derailing the topic like a pro
Home Country vs. Service Provider vs. City
you'd know that if you had taken a look at your own profile
(I moved back some time ago)
Thanks for the notice though

The topic is...that in Windows the full RAM without any convertings of bits and bytes is shown.
Only Hard Disks have that "exchange" from 2TB to 1,8 e.g.
So I was not awaiting that on mobile RAM too.

Really ?
I gotta take a look next time I booted into Windows,
Android sort of is Unix, Linux - so that is more to be expected

yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )

punkrockfan said:
yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )
Click to expand...
Click to collapse
3096MB ?
that looks more like a 32bit OS limitation though

punkrockfan said:
yep
BIOS: 3096MB a 4GB Bar
Windows too
But I got an explanation somewhere else as smartphones use flash memorys equal to SSDs so its the same 1000 isnt 1024...thing there )
Click to expand...
Click to collapse
Plus, on android some ram is reserved by GPU. Unlike dedicated graphic card on PC/Mac which got their owned ram but our GPU shared with system memory.

Same thing as onboard GPU on desktop systems so?
Well 3096 per slot, using several 4GB bars, no 32 bit limitation)

S7 Edge real Ram/Storage size?

Hi
just ran CpuZ on my Exynos model and it indicates:
Total Ram 3580MB (1190 available at the time of the test)
Internal storage 24.86GB
I know about the 1000 vs 1024 story, but even with that in mind, those figures look quiet far from the numbers announced (4GB & 32GB) by Samsung???

fastmike said:
Hi
just ran CpuZ on my Exynos model and it indicates:
Total Ram 3580MB (1190 available at the time of the test)
Internal storage 24.86GB
Click to expand...
Click to collapse
I'd also like an explanation. I've no doubt there are 4gb of memory soldered onto the motherboard, but I'd like to know why only 3.5gb are reported available.
In 32-bit days, before Lollipop and ArmV8 architecture, devices always reported a maximum of 3.5gb available because that was all that could be used on a 32-bit system. I'm wondering if this ram reporting issue is due to some kind of 32-bit limitation on our 64-bit devices.
If anyone really knows the technical reasons for this, I'd like to understand what's going on, just to satisfy my curiosity.
Sent from my SM-G935V using Tapatalk

Is some of the RAM reserved for the graphics chip, like a PC has system RAM and video RAM for the GPU?

Some of the RAM around 512mb is allocated to the GPU, and for the storage, 8gb is used for android system partition

Can anyone confirm that moto 5 plus use 64 bit android?

Asking for this because there is not a single thing like armv8a written in build.prop , So i guess we r using 32 bit android, also this is in build.prop
ro.product.cpu.abi=armeabi-v7a (not armv8)
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist64= (just empty)
ro.product.cpu.abilist32=armeabi-v7a,armeabi

JJSingh said:
Asking for this because there is not a single thing like armv8a written in build.prop , So i guess we r using 32 bit android, also this is in build.prop
ro.product.cpu.abi=armeabi-v7a (not armv8)
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist64= (just empty)
ro.product.cpu.abilist32=armeabi-v7a,armeabi
Click to expand...
Click to collapse
Yes bro its OS is 32 bit. Since its processor are based on armv7. And it won't be a trouble as the chip inside is not that powerful.

Ankit_29 said:
No bro. Common its 2017 almost every device is 64 bit.
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Click to collapse
al the latest moto G phones have 64 bit processor and 32 bit system... and the g5 plus is not an exception.

Then the software of both devices is 32 bit? That's a little disappointing

dhk.- said:
al the latest moto G phones have 64 bit processor and 32 bit system... and the g5 plus is not an exception.
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Click to collapse
Sorry I read it wrong. I thought he was talking about processor. Edited my post hope so this time I am correct.:silly:

dhk.- said:
al the latest moto G phones have 64 bit processor and 32 bit system... and the g5 plus is not an exception.
Click to expand...
Click to collapse
lol that is freking weird. but that matters? i mean upto how much extent. what if we had 64 bit os?

Thanks guys, i also did confirmed this myself ,os is 32 bit only although we have 64 bit compatible processor and even 4 gb ram . I donno whats wrong with motorola....

Ankit_29 said:
Yes bro its OS is 32 bit. Since its processor are based on armv7. And it won't be a trouble as the chip inside is not that powerful.
Click to expand...
Click to collapse
Bro snapdragon 625 is not a low end chip, it's powerful enough to run ur phone smooth, and it's based on armv8a and that makes it backward compatible to armv7....so this phone is supposed to run 64 bit os , but u knw moto

JJSingh said:
Thanks guys, i also did confirmed this myself ,os is 32 bit only although we have 64 bit compatible processor and even 4 gb ram . I donno whats wrong with motorola....
Click to expand...
Click to collapse
bcz i think to unify the system for all variants. g5 plus also has 2 and 3 gb ram varints. it must be something which moto has taken into account while pushing 32 bit. so i guess we are good here.lol

rayzen6 said:
bcz i think to unify the system for all variants. g5 plus also has 2 and 3 gb ram varints. it must be something which moto has taken into account while pushing 32 bit. so i guess we are good here.lol
Click to expand...
Click to collapse
Well i think u r right, 64 bit os would b heavy for 2 gb model... i hope we will get 64 bit lineage os sonn...

JJSingh said:
Bro snapdragon 625 is not a low end chip, it's powerful enough to run ur phone smooth, and it's based on armv8a and that makes it backward compatible to armv7....so this phone is supposed to run 64 bit os , but u knw moto
Click to expand...
Click to collapse
Please let me know where I have said SD625 a "low-end chipset". As far I know and own the device and went through several test it shows armv7 (SS attached).

Ankit_29 said:
Please let me know where I have said SD625 a "low-end chipset". As far I know and own the device and went through several test it shows armv7 (SS attached).
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Click to collapse
broo your imei.

@rayzen6
Thank you bro. I didn't noticed it.
I have changed it. Hope no one has downloaded the pic.

Ankit_29 said:
@rayzen6
Thank you bro. I didn't noticed it.
I have changed it. Hope no one has downloaded the pic.
Click to expand...
Click to collapse
:good:

JJSingh said:
Well i think u r right, 64 bit os would b heavy for 2 gb model... i hope we will get 64 bit lineage os sonn...
Click to expand...
Click to collapse
It is not software related. If the hardware is v7, you will not get 64 bit lineage

PunchUp said:
It is not software related. If the hardware is v7, you will not get 64 bit lineage
Click to expand...
Click to collapse
SD625 is 64-bit capable.

KapilFaujdar said:
SD625 is 64-bit capable.
Click to expand...
Click to collapse
You don't get the point. Even if it is a 64 bit SOC, rest of the hardware follows v7 architecture (as SD625 is backward compatible). So it impossible to run 64 bit OS on this device.

What about ram usability
Since we are running a 32 bit Android version 4 GB ram variant is good can Android OS utilise all the 4gb of ram?

ags34 said:
Since we are running a 32 bit Android version 4 GB ram variant is good can Android OS utilise all the 4gb of ram?
Click to expand...
Click to collapse
4 GB is the maximum a 32 bit architecture can support. So yes, it's fully utilised

PunchUp said:
4 GB is the maximum a 32 bit architecture can support. So yes, it's fully utilised
Click to expand...
Click to collapse
The physically addressable memory has not much to do with the "bitness" of the architecture. Most armv7a implementations support lpae (large physical address extension) and can thus address more than 4GB. Actually, I bet this extension is used on the 4GB variant as you also have I/O mapped into the physical address space and would be unable to utilize all of the RAM.
The 32 Bit architecture only confines the virtual address space *per process* to 4GB. Since some of that address space is used to map in shared objects (libraries), stack, kernel interfaces etc. you can usually only use 2-3 GB of RAM per process. This is hardly an issue for a phone (unless you run the Facebook app ). For servers (especially databases etc.) this limitation is an issue and the reason why 64 bit architectures are used there.
AArch64 has some other benefits, such as twice the amount of general purpose registers, 64 bit wide registers (obviously) which allow for 64 bit math, mandatory extensions (no need to check, compiler can just use NEON e.g.) etc. So it's sad that Motorola is not using the SoC's potential.
As for custom ROMs: You'd need a 64 bit kernel which supports the Moto's hardware, 64 bits gfx drivers. Not easy. And then you still need to hope that you can somehow convince the bootloader to boot your kernel in AArch64 state -- which may not be possible. Thus it is extremely unlikely that you get 64 bit support from the community.

is it possible to expand RAM by changing higher RAM chip?

My K1 has upgraded to 7.0. it became slow when i use it. I rooted and optimzed it but it can olny get a lttle better.
I want to know if an android device can expand RAM by changing the RAM chip? And if it can perform much better?

its very difficult and not very cost-effective to hire skilled engineer to replace it . just buy a new tablet

Guan Yu said:
its very difficult and not very cost-effective to hire skilled engineer to replace it . just buy a new tablet
Click to expand...
Click to collapse
so can u tell me will its RAM expand if i change the RAM chip withe higher one?
i saw the RAM of xiaomi tablet2 can be expanded with doing that. so can its CPU.

grayfox23 said:
so can u tell me will its RAM expand if i change the RAM chip withe higher one?
i saw the RAM of xiaomi tablet2 can be expanded with doing that. so can its CPU.
Click to expand...
Click to collapse
i dont know cuz its also depend on software compability , but who know ? you can try it

Guan Yu said:
i dont know cuz its also depend on software compability , but who know ? you can try it
Click to expand...
Click to collapse
1st,thank you for replying me. i did a lot of things befroe i buy it, because it is a second hand.and it former owner told me it was upgraded to 7.0 and became slow maybe because it 2GB RAM. so i was thinking if its RAM can be expanded by doing so.

Likely not, you will need a compatible ram chip. Even if the larger chip is compatible, the board or kernel may limit it to just 2gb. 32bit devices cannot use more than 4gb anyways. The best you can do is to just increase the swap.

grayfox23 said:
1st,thank you for replying me. i did a lot of things befroe i buy it, because it is a second hand.and it former owner told me it was upgraded to 7.0 and became slow maybe because it 2GB RAM. so i was thinking if its RAM can be expanded by doing so.
Click to expand...
Click to collapse
I have been having the same thoughts as you. On this device, the ram is actually not built in the soc as most smartphones and tablets, its it separate from it on 4x512mb chips.
I got the tablet recently and the first thing that came across my mind was changing the thermal paste, the factory one is really garbage so I cleaned and replaced it with arctic mx2, under the heatsink of the soc and the ram there is some sort of a graphite thermal pad, which is not very efficient, I replaced it with thermal paste as well. Unfortunately I didn't take any pictures, so idk what are the ram chips exactly, devcheck reports that the device has lpddr3 1066mhz ram but I'm not sure if that is trustworthy.
IMO upgrading the ram to at least 3gb is very possible, now the question is what kind of ram chips we need and where should we look for them.
Tegra K1 is practically the fastest 32-bit soc in existence, so more ram would definitely help it out a lot. I mentioned it in another post but on the latest firmware the ram usage is abnormally high on this device, sitting at about 1gb at idle(no gapps, LOS) while it should be closer to 500mb.