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

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How to enable 4GB in my Windows 7 64 bit?

I have the following machine configuration: Intel Core 2 Duo E6300 1 x 2048 MBytes memory chip 2 x 1024 MBytes memory chip 1 x Radeon HD 4870 Motherboard : Gigabyte 945P-S3 Windows 7 RTM 64-bit In ...
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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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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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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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What exactly does “(OC)” mean in products description

Note: this is not a shopping recommendation request I want to buy a nice and fast RAM and a motherboard that supports it. Lets say that I would want to take this RAM (2400MHz), and put it into this ...
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What are the “modified” and “standby” RAM regions in Resource Monitor?

The "Resource Monitor" tool of Windows 7 shows me a typical memory map like in the screen shot above. What are the orange colored modifed and blue colored standby regions in this graphic? What ...
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Can I use faster DDR3 RAM than my motherboard allows?

My motherboard states it supports DDR3 1066/1333. Can I purchase DDR3 1600 and expect my system to drop it down to the highest level the motherboard supports? Will this change the Cas Latency or ...
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OSX Mavericks using way too much RAM

I recently upgraded my mid-2011 15" MacBook Pro to OSX 10.9 Mavericks. Since then, my computer's RAM usage spikes to the point of making my computer unusable. Specifically, anywhere between a minute ...
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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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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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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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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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Is it possible to limit the memory an application is allowed to use?

I've used tools to effectively reduce the amount of RAM available to all applications, but is there something to do the same on a per application basis? Specifically, I'm looking to limit the memory ...
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Which files are cached by linux?

I understand that linux uses unused RAM to keep some files cached. But I wonder, which files it actually caches! If you take a look at free : Gesamt Belegt Frei Gemeinsam Puffer Cached Speicher: ...
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Why is my swap used even if my physical RAM isn't full?

Sometimes I have observed in Ubuntu's System Manager that without the physical RAM being used completely, the swap memory starts getting used. Why is it so?
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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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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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How can I detect the amount of memory slots I have?

I know that there used to be a Corsair memory detection tool, but I can no longer find it. I didn't find anything when searching Google. I would like to scan my machine to know a few things: How ...
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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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Why does my sytem only uses 3.2GB of my 4GM RAM?

I am using win 7 64 bit. I tried the solution given here, didn't help. David's answer makes me think this is futile. Is there anything else to try? Updates: Notice that I have a graphic card on ...
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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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Does the 4 GB RAM limit on 32-bit systems also affect the swap space?

It is well known that 32-bit systems can only handle 4 GB as maximum amount of RAM. Under Linux, does this limit also apply to swap partitions? If my RAM + swap exceeds 4 GB, will it be fully used? ...
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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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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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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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Why does Firefox cause high-CPU-usage “spikes” every few seconds?

When I start Firefox, I have no problems for a while, but after a couple of days, CPU spikes start to occur. During a spike, Firefox freezes and then stops. Spikes occur every seven to ten seconds, ...
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Is storage hierarchy the path of data flow?

I was wondering if CPUs read and write data (almost) always following the hierarchy of storage: CPU <- register <- CPU cache memory <- main memory <- secondary storage ? If without ...
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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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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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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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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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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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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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Possible to force all disk activity to RAM?

I want to tell the operating system to stop using my hard disk and only use RAM as a cache instead. Optimally, I want to tell Windows to: a) pre-cache executable images and necessary bootstrap data ...
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How does hibernation work?

I'm wondering how hibernation works. Obviously it writes the contents of RAM to disk, but is there anything else? does it save/restore CPU state? cache state? anything else?
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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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Adding more RAM at different speeds? Will it impact performance as much as to make it worse than without adding it?

I got a new laptop with 4GBs of ram, expandable to 8GBs. It has 1 4GB stick DDR3 PC3-12800 at 1600Mhz. I can't seem to find another one exactly the same locally, the closest I've found is 1 4GB stick ...
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Mac OS X: What is using my 'active' memory?

I'm using a recent MacBook Pro with 8 GB of RAM and after a few hours of using it at work I notice the amount of 'active' memory growing and growing. Whenever I reboot my Mac, everything looks fine ...
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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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Firefox: Viewing a specific SVG file turns the system unresponsive

Important: Several SuperUser regulars are currently trying to narrow down the scope and cause of this issue. We are currently seeking willing volunteers to fill out the form here after performing ...
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Windows 7 x64 installation freezes on new PC build

Symptoms While attempting to install Windows 7 (64 bit) on my new PC build, it freezes usually at the point where it is expanding the windows image, but has frozen as early as accepting the licence ...
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What to put on RAMDisk on Windows?

I got a lot of RAM installed in my PC recently and I looked into this RAMDisk thing. There are two things I've found from my investigation: You should not mess with Windows native pagefile/memory ...
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Intel SRT vs Superfetch

I'm about to retire my old computer, and replace it with a new Sandy Bridge build. I pretty much settled for a Z68 motherboard, but I couldn't decide if I will get solid-state drive (for use with ...