I have a Droid A855. The main problem with it is keeps giving me low memory errors. Now the specs claim that it has 256Mb internal memory.
The Droid X says:
TI OMAP 1GHz processor with Dedicated GPU
8GB Internal memory for emails, texts, and apps
2 GB microSD card pre–installed on–device — up to 32GB microSD supported
Is this 8Gb the same memory that the 256Mb of the 855 is? Is there really that much of a jump? This is the one I'm interested in.
But, the Samsung Fascinate is on a 1 day sale for the same price as a refurb Droid X - $99. It says:
1GHz Cortex A8 Hummingbird Processor
2GB Internal memory
16 GB microSD card pre–installed on–device — up to 32GB microSD supported
I am still leaning toward the Droid X even though a refurb. WWYD?
-Jim
Droid X - 8 GB internal memory + you can put a 32GB SDcard in it = 40 GB is the maximum you can get.
Samsung Fascinate - 2GB internal memory + you can put a 32GB SDcard in it = 34GB
What is internal memory?
Internal memory is used to store data that is used by the system at startup and to run various types of programs such as the operating system. Typically, internal memory is contained on small microchips that are either attached or connected to the computer's/phone's motherboard. Memory can range from a couple of megabytes to several gigabytes. On an Android device the internal memory will be used by the operating system and applications. You can move some apps to the SD-card, but it's always nice to have lots of internal memory. I have an HTC Desire HD with 1,5GB internal memory and i have about 1GB free space left after using it for six month
Thank you. But what I'm after is how much memory the X offers for system processes. In other words, the A855 offers 256Mb, what does the X offer? I know it isn't the entire 8Gb, but some part of it.
I don't know. Someone with the X will have to give you the answer I recommend you ask in the general section in the Droid X forum.
Sent from my HTC Desire HD using XDA Premium App
thanks for the explanation. very informative
thanks for this
my Hardware Info Apps shows me, that my lpg920 has
441 Mb System RAM. Shouldnt it 512Mb??
Im pretty sure this is because of the rest being restricted or reserved for the things like the actual phone for calls and texts and the essentials so that way it wont get auto killed and stop phone working .. its the same with any phone now like my nexus said 371mb instead of 512 so 441 is alot for a 512mb phone
Hmm it says: 441Mb Ram, 137Mb in use, 304 free..
I would imagine its the GPU etc, I recall on the the GS2 had 1 gig in specs but only had 800 odd meg total.
I don't know how you have so much free mind, I have never had more than 180 free on this and that's on a fresh install.
Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App
hefonthefjords said:
Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App
Click to expand...
Click to collapse
If it has 2x512mb chips they should have just made it with 1gb of on board ram and forgot the dual channel memory as it doesn't make any noticeable difference having it over the GS2 with its single channel.
hefonthefjords said:
Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App
Click to expand...
Click to collapse
That is totally not how dual channel works, if it has 2x512MB you would have usable 1GB.
Dual channel memory is basically like striping on a RAID hard drive array. It interleaves data between the two channels so that while one channel is busy it can read/write the next piece of data to the other channel. It slightly reduces the time the system is left waiting for RAM to be ready for access.
Its exactly the same as dual channel on a PC, its just phones were not really fast enough to bother doing it on until now. However as such its not the holy grail, as if you need to access data already in RAM you still need to access the RAM chip its actually stored on which might just be on the channel currently being used. It just means due to the interleaving once you start reading back its likely to be spread across both banks so can utilise both channels. Lets not forget, its still only supposed to be something like a 10% increase in performance on PC and I expect nothing more here either.
What you are describing is like mirroring and would make no sense, as it would only speed up reading back data when RAM needs to be equally fast reading and writing.
Arguably though, we would get a much better speed boost from using better FLASH memory than dual-channel RAM. Lag in all computing devices is primarily IO waits, its why even the O3D stalls when installing apps.
Its bizarre we are running the OS from chips doing 5-20MB/s when there are SSDs capable of 550MB/s now.
i think 2*256 modules
Alex Atkin UK said:
That is totally not how dual channel works, if it has 2x512MB you would have usable 1GB.
Dual channel memory is basically like striping on a RAID hard drive array. It interleaves data between the two channels so that while one channel is busy it can read/write the next piece of data to the other channel. It slightly reduces the time the system is left waiting for RAM to be ready for access.
Its exactly the same as dual channel on a PC, its just phones were not really fast enough to bother doing it on until now. However as such its not the holy grail, as if you need to access data already in RAM you still need to access the RAM chip its actually stored on which might just be on the channel currently being used. It just means due to the interleaving once you start reading back its likely to be spread across both banks so can utilise both channels. Lets not forget, its still only supposed to be something like a 10% increase in performance on PC and I expect nothing more here either.
What you are describing is like mirroring and would make no sense, as it would only speed up reading back data when RAM needs to be equally fast reading and writing.
Arguably though, we would get a much better speed boost from using better FLASH memory than dual-channel RAM. Lag in all computing devices is primarily IO waits, its why even the O3D stalls when installing apps.
Its bizarre we are running the OS from chips doing 5-20MB/s when there are SSDs capable of 550MB/s now.
Click to expand...
Click to collapse
the discussion is not about dual channel memory. i know fine well how 64bit memory addressing works. the discussion is about MEMORY ALLOCATION in a dual ram system. dual ram implies that there is mirroring happening but obviously i can't say that for sure as i havent ripped apart my shiny new phone to examine it.
i think the reason the chips are cheap is literally because they are cheap. also dedicated flash drives have dedicated storage controllers and what amounts to unlimited supply of DC to hammer all that data in and out with. these sorts of things aren't feasible on a device this size. bear in mind that the entire computational system in this device is crammed onto a 2 inch by 1 inch pcb and basically everything, calculation and processing wise, is taken care of by tiddly processors with only milliamps or even microamps of power shared between them, built by the cheapest bidder with the cheapest parts.
64bit memory allocation is in no way related to dual memory or dual channel Memory.
Alex was totally right about the concept of Dual Channel and that same concept is implemented in the O3D. The Tri-Dual concept created by LG states the phone has dual core, dual channel, dual memory. The only way to achieve dual channel is by having dual memory as you need two strips of memory for it to work. Every other phone that has 512MB will have either a single 512MB chip or two 256 chips working in single channel. In the case of the O3D the Dual Memory is just a marketing term, the phone has two (or "dual") 256MB DDR2 modules which work in dual channel.
No mirroring, no 2x512MB memory, just a basic dual channel setup which you'll find in any relatively modern pc. Put two strips of 2GB DDR1/2/3 in any dual channel capable motherboard and you'll effectively have 4GB of RAM working in dual channel.
should speed the phone up more than 10% as the core and memory can work indepently /ram and core eack core decoding recording video. If the firmware can switch of a core while not idle could result in battery savings too. remember its not dual core 2x 1ghz and 2x 512mb of ram lol would be cool though
I have a Cherry Mobile Flare (a clone of India's Karbonn A9+ mobile phone). It's a very affordable smartphone with good specs. Priced at just Php 4,000 (roughly, 99 USD), it boasts the following specs:
ICS 4.0.4
1.2GHz Dual-core Snapdragon Processor
5MP Rear camera
1.3MP Front-camera
512MB RAM
4.0 Screen Size
4GB Internal Memory
MicroSD slot
Dual Sim (3G/GSM Only)
Wifi Direct
Gyroscope, etc...
My only problem with the said device is how it's partitioned. It gives 512MB for apps (/data). It can be adequate enough for some, and most would just use Apps2SD or something similar, but I'm looking for a way to re-partition it. I also own a Nook Color, and there was a CWM-flashable zip that we can use to partition it's internal memory. I hope there's also a way for me to do it on this phone.
Just purchased this device. It is a 19.5 inch hybrid tablet/desktop android computer running 4.2.2. It uses a Tegra 4 chip and has 2gb ram, 8gb emmc and a 320gb hard drive. I really like this device but one drawback is its 8gb emmc. I would like to move apps to the hdd. As far as I know the only way to do that is by rooting it. If anyone could assist me with this process I would greatly appreciate it.
I've looked a long while and cannot find exactly that
Why the need for 32 GB RAM?
No Android device has 32GB RAM yet, period.
Current Android phones/tablets typically have 8GB or 12GB of RAM.