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

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Will adding more RAM speed up my computer?

Apparently, you can speed up your computer by adding more RAM. Is the amount of ram to be added is directly or indirectly related to the amount of hard-disk space, processor speed, Motherboard etc... ...
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why is some of my swap space being used, when I still have unused RAM?

More of a curiosity than a problem; and, I admit, something of an embarassingly basic question: I've noticed that on many occasions, on my Linux machine I will have ~500MB of swap space in use, even ...
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How much more RAM does Windows 7 use than Windows XP?

I'm trying to figure out whether I need to go with the 64-bit version of Windows 7. I'd rather not, unless there's a big benefit, because even one or two missing 64-bit drivers or one app that doesn't ...
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What happens when you install > 4GB of RAM in a computer with a 32-Bit OS?

So I'm a programmer and I'm not a complete idiot so I know exactly why you can't access memory where you can't have pointers. But I've never tried this and I don't think I ever will because it seems ...
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What is more important for speed: Processor Speed or RAM? [closed]

I am about to buy a desktop, I narrowed it down to two choices, both are virtually identical (even in terms of price) but one has 4 GB of RAM and a 3.7 GHZ CPU the other has 8GB of RAM and a 2.7 GHZ ...
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Why aren't there PCIe RAM expansions?

Perhaps I may be overlooking some aspect that is an important cause as to why these don't exist, but I feel that having RAM expansions through PCIe would be perfectly feasible. I know that a lot of ...
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limits.conf to set memory limits

I would like to limit any process from using more than 500 MB of RAM. AFAIK this is done using RSS in /etc/security/limits.conf but the process called gnome-panel apparently is using 618436 kB of ...
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Why does my 32bit ubuntu see 8GB of RAM?

I have just installed a fresh copy of ubuntu 11.04 32 bit and I was surprised to see that the OS can see my 8GB of RAM not like Windows 32 bit OS. How does it work? How is the address mapping ...
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Do errors in Memtest86+ definitively mean something is wrong with my RAM?

I recently built a new computer for somebody. Everything seemed fine at first, but when I went to install the OS (tried both Windows XP and Windows 7), both installers would fail. XP failed with a ...
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Is a computer's DRAM size not as important once we get a Solid State Drive?

I am thinking of getting a Dell X11 netbook, and it can go up to 8GB of DRAM, together with a 256GB Solid State Drive. So in that case, it can handle quite a bit of Virtual PC running Linux, and Win ...
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What happens when a computer runs out of RAM?

A little ago, out of curiosity, I wrote a Java program that takes up a lot of memory very fast. (It adds BufferedImages to an arraylist in a loop.) I kept the Windows System Monitor open to observe ...
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Why are apps so slow initially when switch to them, even though I have free RAM?

On my Windows 7 (64-bit) PC, when I have a few resource hungry programs going, and half a dozen others, when I switch to an app that I haven't used for a while, it takes a long time to respond and I ...
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2answers
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How can I restrict RAM usage for a particular user or process?

I'm using a background service that leaks memory from time to time. To prevent using the Alt+SysRq REISUB[1], I'd like to restrict the RAM usage for one process or a system user. I really would like ...
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How to empty file cache on Mac 10.9.3

I have a macbook pro running osx 10.9.3 with 8 GB of RAM I use an app which monitors my RAM and displays it in the menu bar, and after copying several large files onto my mac from an external drive ...
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1answer
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What does the MHz of RAM really mean?

Countless of times I've heard and read that RAM-memory can have different speeds - denoted as MHz (e.g. 1066 MHz). However, what this frequency really is has never been explained to me and I'm having ...
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Only 3.2GB of 4GB RAM detected on 64-bit Debian

I'm running Debian Squeeze (x64): # uname -srvmo Linux 2.6.32-5-amd64 #1 SMP Mon Jan 16 16:22:28 UTC 2012 x86_64 GNU/Linux I have 2 compatible 2 GB sticks of DDR2 in my G31M-S motherboard. It ...
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212 views

Can I launch a Windows exe with a simulated reduced amount of RAM?

I have an older application that crashes on launch on a Windows 7-64 bit machine. The root cause, according to the internets, is apparently I have too much memory and the app has some bug when it ...
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6answers
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4.00GB (3.25GB usable) in Windows 7 x64

I have set up Windows 7 Ultimate 64-bit on my PC. I have 4GB RAM and my BIOS states the correct amount (4096MB), but Windows (System Manager) says I have 4.00GB (3.25GB usable). This seems to be a ...
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1answer
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Why do Resource Monitor and Task Manager's total RAM usage not even remotely add up to the total Physical Memory usage? [duplicate]

I have noticed this on many different Windows machine, on many different occasions: the RAM usage reported by Task Manager or Resource Monitor often seems to add up to an amount which is significantly ...
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2answers
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RAM not usable?

I just upgraded my RAM today by adding 2 x 4GB 1333MHz DDR3 sticks on top of my 2 x 2GB 1333MHz DDR3 RAM, making a total of 12GB of RAM. For some reason before the 4GB was all usable, but when I ...
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Mac OS X sysctl get total and free memory size

How to get on MAC OS X using sysctl used and free memory ? Searched for sysctl -a | grep vm or sysctl -a | grep mem but didn't found anything relevant.
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Running Operating System from memory

Assuming SSD's are extremely prone to faliure how economical would it be to load an OS into main memory and run it from there? I can think I can deal with a few obvious drawbacks (I've survived ...
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1answer
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How does RAM frequency and latency differ? How does it affect performance?

I have a question regarding two specifications of RAM memory, the amount of Mhz and the latency timings (example: 9-9-9-24). Which one of the two is most important for system performance and why? ...
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Reduce “Metafile” memory usage?

My work computer (Windows 7 64-bit) spends a lot of time swapping memory when I switch between programs. This surprises me since I have 4 GB of RAM, and the programs I use aren't particularly RAM ...
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463 views

Too much hardware reserved memory

Background My parents have a Gateway lx6810-01 that had 32 bit Windows Vista Home Premium. It has two 4 GB sticks of RAM installed (GSkill F3-10600CL9D-8GBNT), totaling 8 GBs. The RAM came with the ...
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How can I limit the number of child processes that MySQL spawns?

Is there a way to limit the number of children than mysqld spawns? Or should one not worry about that? My VPS only has 512MB of RAM. Here's the output of htop, after I set max_connections to 6 and ...
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Getting gratuitous amounts of soft page faults when loading games and watching flash video

My computer has a strange issue when playing games that load assets on the fly. Perhaps I'm looking in the wrong places, but I seem to be unable to find anyone with a similar issue. In case it's not ...
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Performance of Multiple RAM Sticks Compared to Single Sticks

It's no secret that using two physical drives gives better performance than two partitions on the same physical drive; because there are two devices, they each have their own platters, head, caches, ...
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Why can't graphics cards just have more memory?

Something I never understood, why do graphics cards usually have small amounts of memory on them? I know memory isn't everything, but surely it's pretty cheap just to load 4gb of memory on any old ...
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Is there any advantage to having more than 16 GB RAM on a Windows developer machine?

Assuming a machine (Dual Quad Core Xeon (2.26 GHz) with 24 GB RAM) running Windows Server 2008 and Hyper-V. How many VMs can I expect to run at the same time with good performance? Is this overkill? ...
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How to measure total RAM usage of a program under Windows?

I was comparing the memory usage of different portable browsers but this question is general for all programs that open up in several sub-processes in task manager. See the screenshot from ...
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How do I know when to upgrade RAM in Vista?

Task Manager: XP on the left, Vista on the right. On XP, I would check to see if Peak Commit Charge was approaching Total Physical Memory. When Peak exceeded Total during normal usage, the page ...
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Do I need to have 3 RAM DIMMs to use DDR3, or even be able to run a 3 channel CPU?

The Core i7 CPUs from Intel (Bloomfield in the Nehalem line) are an example of a CPU that handle 3 channels of memory input, and on an appropriate motherboard, ideally making use of 3 DIMMs the best ...
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If I doubled my RAM, would my memory usage go down?

My PC currently only has 1GB of RAM, and I am currently using 86% of that. With 2GB of RAM, would I be using 43% right now?
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1answer
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Is it normal that successive passes by memtest86 are taking longer?

It took 35 min to complete one pass (the default config was for four passes) so I took a leap and assumed that the test would be over in ~105 minutes. I came back 3 hours later, expecting it to be ...
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Getting 'running low on memory errors' on Windows 7 64-bit with 8GB RAM

I have a new Dell laptop running Windows 7 64-bit with 8GB RAM. If I leave the system running overnight I start getting low memory errors the next day. Looking at Task Manager it shows 6.27GB used but ...
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How does the CPU write infomation to ram?

My question is, how does the CPU write data to ram? From what I understand, modern CPU's use different levels of cache to speed up ram access. The RAM gets a command for information and then sends a ...
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Why can't Windows 7 x64 use all installed memory?

I'm running Windows 7 x64 RTM on a Dell Latitude D520 w/ 4gb memory. The system control panel reports: System type: 64-bit Operating System Installed memory: 4.00 GB (3.24 usable) Why isn't ...
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What is Kernel Memory? What function does it serve?

While looking at my Task Manager on Windows, I noticed a little thing marked "Kernel Memory." What exactly is this? And what function does it serve compared to the Physical Memory?
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Auto-restart mysql when it dies

I have a rackspace server that I have been renting to run my personal projects upon. Since I am cheap, it has 256Mb of RAM and honestly can't handle alot. Every once in a while, when there is a sharp ...
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What limits my laptop on upgrading RAM at 8GB?

I have a Toshiba Portege M780-S7240. It's an i7, 64-bit and currently has 4GB RAM. I'd like to upgrade to 16GB. (If it matters, I'm running 64-bit Ubuntu.) I checked with a RAM vendor who said it ...
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Windows RAM Test Program

I'm recently getting blue screen of death on my Windows XP machine. I suspect that the culprit is the RAM I've just installed. Is there any program that I can use the test whether my RAM is good or ...
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Can a 800Mhz memory stick be used in a 400Mhz slot?

I have a 3 years old ThinkCentre (A52, type 8381). It has 1GB of RAM in 4 256MB sticks. According to the model spec, it supports 400Mhz DDR2 memory. I would like to increase the amount of RAM I have, ...
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How can I get more low memory with the following setup:

Modules using memory below 1 MB: Name Total = Conventional + Upper Memory -------- ---------------- ---------------- ---------------- MSDOS 14 317 (14K) ...
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How can I find out processes are using swap space?

I have a linux server top reports about 9GB of swap used: But I cannot figure where's it use swap, some google results said that top - O commad follow by p will show swap usage by process. But as ...
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Why do we need to set swap space as twice big as our physical memory?

When we want to setup a linux system, there is a common a suggestion to set the swap space twice as big as your physical memory. I want to know why do we need this, and how it is this suggestion come ...
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100% of RAM is used when the Task Manager shows a cumulative usage of - what should be - less than 12% [duplicate]

I'm only using a limited amount of programs, yet my entire RAM is being used. These pictures should give enough data. I have also come across this post so here is the RAMMap file (Mega.co.nz, 102MB). ...
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How many times can data be read from a USB flash drive?

While I am aware that performing writes on a USB flash drive degrades the life expectancy of the device. I have heard the quantity of writes is anywhere from 100 thousand to 10 million, but I have ...
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Can I use non-ECC memory in a machine that already has some DDR2 ECC memory?

I have a developer workstation that has registered DDR2 ECC DIMMs already installed. I'm planning on getting some more RAM. Can I add memory modules that aren't ECC and/or registered? I mean, does the ...
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What kind of RAM do supercomputers use?

I was reading an article about one of the worlds fastest computers and this is one of the lines which interested me: To mimic this relatively minuscule amount of brainpower, researchers used the ...