Hardware :: Ram Memory - DDR3 And DDR2?
Jul 28, 2010
I'm wanting to update my existing 1GB Kinsgston 240 pin DIMM memory to 2GB or more. Can I keep my existing IGB and add another from a different manufacture? Will they match or should I just get new memory? What is available is DDR3 and DDR2. Guess what I'm asking is I have two memory slots total one will have the existing 1GB and I want to add at least 1GB more, does the DDR3 or DDR2 matter? Or is it all about the 240 pin config?
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Oct 27, 2010
I just purchased this laptop a few days ago and already I am wanting to upgrade the RAM and such. In the terminal when I typed 'sudo lshw' it gave me all of my system information and I have two RAM slots, one is 1GB and the other is 2GB. This laptop can be maxed out at 8GB which is my plan but the RAM in here is 800MHz DDR2. What exactly does the 800MHz mean and what happens if I buy RAM that's DDR3? Do I have to get exactly 800MHz DDR2 RAM when I upgrade or can I order better? The ram I was looking at is two sticks of 4GB(4096MB) DDR3 1333MHz but will this even work in my laptop or blow it up?
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Mar 16, 2010
I have an amd phenom II 9950 125 watt am3 cpu, and 16GB of ddr3 1066 ecc registered 4x4G dimms.I am trying to find a motherboard that works with this memory.I like the reliability of ecc, and I want ot use it.
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Apr 18, 2011
my main problem is :
1. I have 4 GB of DDR3 RAM but ubuntu shows only 3GB available.
the result of free are :
Quote:
total used free shared buffers cached
Mem: 3086992 985428 2101564 0 61212 488768
-/+ buffers/cache: 435448 2651544
Swap: 7812092 0 7812092
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Feb 9, 2010
I'm looking at a new board that supports both DDR2 800 and DDR2 667. But, the FSB is only 667MHz. My question is: is there a benefit of using the DDR2 800 on the 667 FSB? That is, can the DDR2 800 be fully utilized on this system? What are pros and cons of such? Does the added benefit outweigh the additional cost of the RAM?
Note: I'm not looking to overclock at all, and this is not going to be used for 3D apps (games or video editing).
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Jan 28, 2011
Just installed 2 pcs of 2GB DDR2 RAM specifically KVR80032N6/2G-SP from kingston. For dual channel as my board supports it plus the memory I could afford to buy now. Though I am using the RAM for shared memory -- I don't think it's using a lot. If I understand it right 2GB is roughly equivalent to 2048MB. So two of these becomes 4096MB -- less 256MB for the shared video ram -- that would be around 3840MB. Unless my board is using 512MB of shared video ram and that would be 3584MB w/c is closer to 3.6GB. Never mind I'll just check my shared Video RAM.
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Dec 21, 2010
This is really not a Linux or SuSE question. However, the folks on this forum are polite and knowledgeable, so I will give it a try.In the process putting together a new computer.About 99% confident in the following:otherboard: ASUS Crosshair IV FormulaCPU: AMD Phemon II X4 955Graphics card: Gigabyte GV-R685D5RAM: Unknown. ASUS, as well as several other motherboard suppliers, have not approved of any 1x4GB DDR3 RAMS. Has anyone had success with getting a 1x4GB DDR3 RAM to work on the ASUS Crosshair IV motherboard?
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Dec 21, 2010
I had this card on Ubuntu 10.10 and Mint 10 and with the video card driver installed, all movies where playing like I had a video card with 1 MB. When I was using the os generic video card movies played more better than with the video card driver enabled, but with the generic driver I did not had any graphic effects.Will CentOS use proper the nvidia driver or not?The video card is made by Gigabyte but has the nvidia chipset.
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May 9, 2010
since this is my first time changing the motherboard i need alittle help on matching the requirments.
Computer: Gateway GT5448E 32bit with Msi N9500gt 1gb DDR2
New motherboard:
Asus P5Q Standard IP45/S775/PCI-E2.0/SATA2/ATX Motherboard [URL]..
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Jan 20, 2010
i tried installing suse 11.1 on sony vio with config core2duo, 512 DDR2 ram n 80gb HDD and got th following error . being a newbie dont what the problem is.
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Apr 20, 2010
I am using malloc and frees a lot in my program. It shows its allocated but when i remove it doesnt show as the memory is removed(I am using the top command to view VIRT memory usage). If this continously grows what would happen to my program (Will it go out of memory?)
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Feb 7, 2011
Fedora 14 xfce
HP Mini 210
I am looking to buy some memory for my netbook. Currently I have 1 GB of DDR3 memory. However, the specification says that 2 GB of memory is the max. However, when I do the following it says that 4GB is the max:
[Code].....
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Mar 18, 2011
I have a computer with 16GB of ram. At the moment, top shows all the RAM is taken, (NOT by cache), but the RAM used by the various processes is very far from 16GB.I have seen this problem several times, but I don't understand what is happening.My only remedy so far has been to reboot the machine.
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Jan 11, 2010
let me know how to clear cache memory ( RHEL 5.1 ) as it consumes almost 100% physical memory.
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May 3, 2011
I am looking for free database that has low memory usage and innodb and memory like engins that has C API and support trigger and client/server support for using in embedded linux systems.
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Mar 21, 2011
I am new to C and linux. My code below does arbitary writes but I cant figure out where or how it does it.
I am calling the insertNode() function with seq = 'MISSISSPPI$' and alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ$'
Code:
Weird behaviour I should mention is that when I check for NULL pointer in node->child[index], the unassigned values are not null anymore, they point to arbitary memory.
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Feb 3, 2010
we found that if we use 'top' to show the memory usage of a server (SuSe Linux 10), we can get virtual memory usage as well as 'Resident memory' usage. For virtual mem or a particular process, it is around 1.1GB, which is large but for resident memory, it only consumes 300MB. Are there anyone who knows what the differences are? I would also like to know whether the difference (1.1GB - 300MB) = 800MB are actually available for use by other applications in the system.
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Apr 19, 2010
I get this error when I run "sudo apt-get install python-software-properties"
Preconfiguring packages ...
dpkg: unrecoverable fatal error, aborting:
fork failed: Cannot allocate memory
E: Sub-process /usr/bin/dpkg returned an error code (2)
I'm trying to install deluge via ssh and my vps has 512mb ram and is only using 11% of it prior to running the code.
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Apr 13, 2010
How do I write a script for my Linux that can show me total memory vs used memory and have it email me results if it's over 70 percent?
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Oct 20, 2010
I am monitoring physical memory in a server I administer, and my hardware provider told me they had increased physical memory size to 4Gb... However, using several tools (free -m; top; dmesg | grep Memory; grep MemTotal /proc/meminfo I discovered that I actually have 3Gb, not 4... But, my doubt comes from the fact that dmesg | grem Memory tells me I have 3103396k/4194304k available The first number is effectively 3Gb, but the second one, is 4! so, why I am looking at this two different numbers?
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Jan 29, 2011
I have had a fresh install of Ubuntu 9.10 and installed some software after that.Since third some, some process is eating half of my memory.I have checked processes running in system manager but everything is normal.Maximum is consumed by compiz which is about 26 mb, seems very normal.I did restarted my computer several times, and in the start for 5 mins, its fine after that again my cpu fans runs at very fast speed and my one cpu is used up 95 % (I have dual core).Please help me out, this invisible thing is driving me crazy.I am attaching my htop screen shot (sorted by cpu %), now the cpu is not used by completely but fan is still struggling hard and fast.
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Nov 22, 2009
I am writing an application that wants to access periphals registers outside the standard (allowed) memory area.
Doing so gets me "segmentation fault".
I know, this is natural behaviour.
One way of getting around this is writing the module which has to be loaded by linux. I will consider this some time later.
For now, I want to come to some quick result and allow linux or gcc compiler to write to those memory areas of periphals. Is there a direct way to do so?
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Aug 25, 2010
Is that possible that SHM shared memory is counted as cache memory on Linux with kernel 2.6.18?If find it really odd since this memory is not file backed, but I have a piece of code that loads data using shm_open+mmap, and it generates an amount of cache memory in /proc/meminfo that corresponds exactly to the amount of shared memory (I load that data from a file but I am using posix_fadvise(fd,0,0,POSIX_FADV_DONTNEED) to ensure this file is not cached and I made sure that it is working as expected). As far as I know SHM memory was not tagged as cache memory with kernel 2.6.9.If it is the case it is really unfortunate since normally cache memory can be considered to be part of the "available" memory since it can be flushed promptly but this is clearly not the case with SHM memory... Is there an easy way to get the total amount of used SHM memory on a system?
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Aug 22, 2010
This is my first post in these forums. I'm still quite new to Linux (using Mint 9) so please bear with my not-very-articulate question(s)When I boot up and open up a tty terminal I get a message saying "Memory corruption detected in low memory." I've done an extensive google search about the issue and it seems not uncommon. I ran a memtest with no errors returned, so I'm sure that there's nothing really wrong with the memory; apparently it's a bug in the kernel that's causing this.
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Jan 17, 2010
I found from command 'top' that 8GB memory are used. However, using command 'ps' with some options to grep the running processes and then summing up the memory used by the running processes are less than 2 GB. Where has the used memory gone ?
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Jan 8, 2011
I have been setting up a vps I got out with bhost.net, with CentOS installed. I've been learning and have set up everying I need with the exception of ftp/sftp.
Using yum I installed vsftpd and ran into problems, thinking it was something I might of done I did a fresh install of CentOS and I still recieve the same problem on a fresh install so it is nothing I have done to the server.
The problem is when connecting via a sftp client I get an out of memory error. This error is listed in the putty faq ( url ) under A.7.5, there is a brief explaintion of the cure under A.7.6.
there is mention of a login script but I don't know where this is located. I'm a novice at Linux but by no means incompotent when it comes to computing.
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May 4, 2010
I have a query regarding top & virtual memory. When we run top it show VIRT (Virtual Mem), RES (Resident Mem) & SHR (Shared Memory). The total virtual memory of my machine is 4 GBs (2 GB RAM + 2 GB Swap), but still I am able to see a process showing 4000m virtual memory column. what it means, as its show VIRT Mem more than actual available VIRT memory
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Mar 21, 2011
When I start bluej and try to open files from my memory stick the memory stick is not available. Is there any way that I can open files directly in bluej from my memory stick.
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Sep 1, 2009
I have a sony vaio vgn-ns3oe with Fedora 11 installed.
I have 4GB of memory installed.
The laptop came with vista home premium which I wiped and installed Fedora 11 but forgot to check if everything was working ok. code...
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Jul 20, 2010
I'm running 10.04 on a machine with 512 MB of RAM and a 3.2Ghz processor. Without any programs open, memory usage is around 350 out of 500 MB, or, around 70% of total memory.
I was previously running 9.04, but upgraded to get the long term support. Although I don't have it installed now, and didn't write it down, I'm sure 9.04 used much less memory, and it certainly felt a lot faster when opening and using applications.
Is it normal for Ubuntu 10.04 to be using this much memory, and if so, what are some things I can do to reduce memory consumption?
Reading Wikipedia, it says Ubuntu only uses 128 MB of RAM.
By the way, here is a screenshot: [URL]
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