RAM (random access memory), either RAM hardware or software and operating system use of RAM.

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How to tame Linux responsiveness, memory, and paging

First question on overflow =)... +100 bounty. Couldn't think of something I really cared about until now: I'm really fed up with the state of Linux desktop responsiveness, e.g. ...
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4answers
3k views

Why does Linux use a swap partition when the kernel supports paging/virtual memory anyway?

As far as I understand paging and swapping, they're completely different concepts. While swapping means, that a process is either completely in physical memory or on the hard drive, with paging parts ...
18
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5answers
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Does installing larger RAM means consuming more energy?

Since every bit of a dynamic memory module needs to be refreshed to keep it's data, does that mean that if I install a module with more capacity than the current one on my laptop, more energy will be ...
18
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3answers
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What limits a motherboard from supporting more memory?

My specific question is with the ASUS M3N78-VM motherboard that my home server uses. I currently have 4x2GB installed for a total of 8GB but I was hoping to upgrade to say 16GB (4x4GB). The official ...
17
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2answers
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Can I add RAM sticks from an old PC to improve the performance of the new one?

After 6 good years, I think my old Vostro 410 died on me the other day (RIP). The PC won't turn on so the motherboard appears to be dead. I'm thinking of replacing it with a Lenovo M83 Pro small-form. ...
17
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6answers
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16GB Ram - Force Windows 7 to use as much RAM as possible?

I was wondering if there is any way to configure Windows to consume MORE ram. I have a desktop PC with 16 GB of ram and only 2 is used on a normal workload. The maximum which i witnessed till now is ...
17
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6answers
3k views

Does more RAM usage cause more battery usage?

I'm using a 2 year old 15" AMD laptop running Windows 8, and its battery life is not as long as the brand new ultrabooks for sure. In the place I'm currently working I don't have access to a power ...
17
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4answers
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CPU-Z says my PC3-10600 1333MHz RAM is actually PC3-10700 667MHz. Do I have 1333 or 667 MHz RAM?

CPU-Z says this: DDR3 4096 MBytes PC3-10700 (667 MHz) I am supposed to have PC3-10600 1333MHz. What am I not understanding? Or, is my RAM only half of what the label and seller claims it to be? ...
17
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4answers
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How to test video card memory

I want to test the memory of my video card because there are vertical lines on my screen. I have done some basic troubleshooting and it seems that the problem is in the video card. I want to validate ...
16
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5answers
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Windows 7 unreasonable ram usage

I have a fresh install of windows 7, and my ram in normal startup goes up to 2.5 GB. I looked at task manager, and there's at least 1.5 GB missing from there and in resource monitor as well. No ...
16
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2answers
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How do I detect my computer's RAM configuration?

My Dell Inspiron PC running Windows 7 reports that it has 2GB of RAM installed. Is there any way I can detect how this memory is distributed short of opening the side of the machine and taking a look? ...
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4answers
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Is killing a process still considered bad for memory management?

So I am having a little discussion with my boss about memory management. I've been told that killing a process does not allow it to deallocate memory. Is that still the case, or was that years ago? ...
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3answers
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How do I dump physical memory in Linux?

How would one create a dump of the physical memory (RAM) in Linux? What software if any is available for this purpose? I have read that one should not write to a local disk but rather send the data ...
16
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3answers
5k views

Why is chkdsk using 90% of my RAM?

When I built my new computer, I gave my old one to my parents who were in dire need of an upgrade, after cleaning everything out of it, of course, leaving just the OS and a few programs. It worked ...
16
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3answers
26k views

How can I make my computer use more RAM?

I'm running Windows 7 64-bit with 8GB of RAM. The problem is, I very rarely use all of it. I do some video editing from time to time and it definitely comes in handy then, but for everyday use, I'm ...
15
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2answers
326 views

Are 64-bit processors “faster” than 32-bit ones, simply because they are 64-bits? [duplicate]

I have pondered that some say "32-bit is old news" because you are limited in RAM without cutting around, such as with PAE. Assuming first that the following factors weigh in on the processor's speed ...
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6answers
2k views

My RAM / memory sticks got wet, can I still use them?

I had a small pile of accumulated, salvaged desktop RAM / memory sticks sitting on my desk. I made the apparently unwise decision to drink my triple-extra-large sody-pop near them, and to my demise, ...
14
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6answers
998 views

How does a free-up RAM utility free up RAM?

Does it discard the RAM away that was used by programs or transfer it to a page file on the hard disk? Or does it just clean up the unaddressed RAM?
14
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2answers
3k views

What do the memory timings and RAM mean?

On every piece of RAM you'll see the timings like: "2-2-2-5". What is this all about? What should I buy?
14
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12answers
19k views

Is putting the swapfile & temp folder to ramdisk a good idea in Windows 7 64 bit with lots of RAM?

I want my Windows to run as fast as possible. If I have 12GB RAM in Windows 7 64bit, quad core CPU, and all apps fit in memory, will the swap file ever be used for anything? The question is about if ...
14
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2answers
1k views

What does 'Max allocated RAM size' mean on this mobo?

I see in multiple webshops that this MSI Z87 G41 PC Mate mobo has an attribute called Max Allocated RAM Size: 1760 MB What does this mean? Can the motherbord handle maximum 1760MB memory in total, ...
14
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6answers
9k views

Wipe RAM on shut down to prevent Cold Boot Attack

My system is encrypted using Full Disk Encryption, i.e. everything except /boot is encrypted using dmcrypt/luks. I am concerned about Cold Boot Attacks, where researchers demonstrated, that content ...
14
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2answers
18k views

Why is dwm.exe using so much memory?

I've scoured the web, but I'm sick of reading "scan your computer for viruses" and "upgrade your RAM" on answers to similar questions to this. I understand that dwm.exe is for (simply put) caching ...
14
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1answer
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What hardware device used to eat up 1.4GB of my 4GB RAM, and now suddenly after no hardware changes eats up 2.2GB?

This is more or less a continuation of What hardware device eats up 1.4GB of my 4GB RAM? While I have more or less accepted the solution there that for some mysterious reason, after a BIOS upgrade ...
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6answers
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Windows XP: 4GB to 16GB RAM upgrade

I'm on a 32 bit OS Windows XP Home–will be upgrading to a 64 bit XP Pro–and I'm upgrading my RAM to 16GB. Should I see a difference? I typically compress a ton of files at one time. The 32 bit @ 4GB ...
13
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8answers
90k views

Why is all my extra RAM marked as “hardware reserved” in Windows 7?

I have a new HP Z800 Workstation, running Windows 7 Enterprise 64 bit. Z800 Specs are here. The machine has 4GB of RAM -- windows reported 1.99GB available, 2GB was "hardware reserved". I added ...
13
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3answers
6k views

What do motherboard RAM slot colors mean?

I have always seen that the motherboard RAM slots are colored in pairs, but never knew what it meant. I just put the 2 RAM in, and after a few tries it always worked. But after I tried to install a ...
13
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4answers
8k views

Is there an equivalent of Memtest86 for CPUs?

I need an easy way to do system stability tests. I have come to rely on Prime95 which does a fantastic job of proving stability (or instability) very quickly; but it requires an OS installed. I would ...
13
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2answers
3k views

Windows 7 64bit - 16GB Ram utilizing only 4GB?

I've got 16GB ram and running Windows 7 64bit, but for some reason I think it's utilizing only 4GB? If I go into properties it says Installed memory: 16.0 GB, but if under some loads for example ...
12
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5answers
2k views

How can a 80-bit floating point be used by a 32-bit system? [duplicate]

Since a 32bit system can't manage a 2^33 number (because the obvious 32-bit limit), how can manage a 80-bit floating point number? It should require "80-bit"...
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9answers
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How to Check RAM Size without Looking at Motherboard

As far as I am aware, one can view the RAM Size in System Properties: From the above screenshot it seems that My RAM is 3.5 GB, but as far as I can tell I actually inserted 2 two GB RAM into my ...
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5answers
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Increase page file or buy RAM?

I've a 10+ year old XP PC which surprisingly still works however one of the 256MB RAM finally died. Now I am left with just 256MB. As expected the PC became slower however when I tried to increase the ...
12
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3answers
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Can you tell DDR and DDR2 apart visually?

I'm getting a few old computers to take apart for parts soon. Most of them are definitely using DDR2 RAM, but there is the possibility that one or two of them are using DDR RAM. Since these are ...
12
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8answers
15k views

Why is usable RAM less than total RAM?

My girlfriend bought a laptop last week. It's a core 2 duo with 4 GB We installed vista 64bit, and one of the first things we did was right click on "My computer" to see gthe properties. Immediately ...
12
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5answers
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Why are RAM size usually in powers of 2 (512 MB, 1, 2, 4, 8 GB)?

The newer computers usually have 2, 4, 8, etc GB of memory. The older ones usually have like 128, 256, 512 MB or less but usually also in powers of two. What is the reason behid this? Why don't hard ...
12
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8answers
7k views

Windows only sees 768 MB RAM out of 4 GB

I have a windows XP machine with 4 GB of memory. As expected (and discussed in a dozen or so other questions on this site) the OS could only see 3 and a bit... until yesterday. As of yesterday, the ...
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7answers
27k views

Is it safe to use RAM sticks with different frequencies?

I have two RAM sticks: one 533 MHz and one 667 MHz. Is it safe to use both of these in the same system?
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9answers
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Too much memory getting used

I have been feeling this way for a while, looking at task manager mentally ballparking how much physical memory should be in use, and noticing a large disparity. I finally got around to measuring it. ...
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7answers
1k views

Firefox needs 1 GB of RAM

I work as a web developer and for that I'm using Firefox with Firebug. Recently, I have noticed that after two hours of work, the firefox.exe process needed more than 1 GB of my working memory! ...
12
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4answers
2k views

How do I quickly stop a process that is causing thrashing (due to excess memory allocation)?

We've all experienced it--some program is asked to do something that requires a huge amount of memory. It dutifully tries to allocate all this memory, and the system immediately begins thrashing, ...
12
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1answer
11k views

Ballooning Mac OS X kernel_task and Wired memory usage. How to diagnose / fix?

I have a very strange issue, which I'm having a hard time diagnosing as to the root cause. I have a Mac Pro (2008, 8-core 2.8 GHz, 8800GT) with 14 GB of RAM (recently upgraded because of this ...
12
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7answers
38k views

Windows 8.1 Update 1 Disk Usage 100%

Background Information / Computer Specs I have a 14-inch Samsung Series 5 Ultra. Core i5 CPU, 750GB HDD, 8GB RAM, Intel HD Graphics 4000. I've had the computer for about 1.5 years with no major ...
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5answers
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How much memory can a 64bit machine address at a time?

If the memory is byte addressable, shouldn't it be 2^64 / (2^10 * 2^10 * 2^10) = 2^34 GB ? A general Google search says 8GB or 16GB max. How is that true? Also, how does it depend on the Operating ...
11
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12answers
1k views

RAM, Processor, L2Cache, Etc. - What gives you the most “Bang for your buck”?

I am not a hardware person when it comes to computers so when I buy a new one I just pick the one with the biggest numbers, but I know I am most likely wasting money. If you're going to purchase a ...
11
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3answers
5k views

How to check if two memory modules are being used with dual channel?

I have two 1333 DDR3 memory modules with different brands. I wonder if they can be used in a dual channel setup. How can I check that?
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1answer
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Wired Memory vs. Active Memory in OS X

I'm having trouble understanding the difference between Wired Memory and Active Memory in OS X. Do not talk about the four types of memory (don't talk about free or inactive memory, because I ...
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6answers
5k views

Windows XP seemingly out of resources but plenty of free RAM and swap available

This one has been bothering me for years and so far I couldn't find an adequate solution. The problem occurs on pretty much every XP install I've done. After opening a variety of programs or the ...
11
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2answers
290 views

Is it possible to retreive the content of a running bash script from ram

I have by accident overritten a very complex bash script, where I tried to implement scoping and threading in a tidy way now the same script is still running but the file is no more, question is: Is ...
11
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2answers
421 views

Why does my W7x64 laptop show 4091Mb of RAM instead of 4096Mb?

My laptop shows me only 4091 Mb of RAM instead of 4096Mb that it should. When I remove one piece of memory (it doesn not matter which one), it then shows 2046Mb. I do not remember when it started, ...
11
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1answer
13k views

Disable compressed memory in Mac OS 10.9 Mavericks?

Is there any way to disable memory compression in Mavericks? Ever since I upgraded, my Minecraft server has been using ludicrous amounts of CPU time and choking. I'd like to test without compressed ...