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

learn more… | top users | synonyms (1)

16
votes
3answers
2k views

Getting a BSOD and wonder RAM sticks might be the cause? Is a memory test guarantee 100% assurance?

I’m using Windows 7 (64-bit) 16GB RAM (2x8GB RAM sticks). Yesterday I got a blue screen while using my computer (Chrome browsing mostly). For checking that it is not a memory problem - I ran “...
16
votes
6answers
68k views

How can I monitor video memory usage?

How can I monitor video memory usage?
16
votes
4answers
82k views

Is there a command to find out the available memory in Windows?

I am looking for a command that returns the available physical memory in Windows. I tried "systeminfo" but it takes too long and returns a lot of unnessesary information for me. If there is not any ...
16
votes
2answers
4k 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?
16
votes
4answers
2k views

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? ...
16
votes
2answers
56k views

How to get results from Memory Diagnostics Tool?

I ran the Memory Diagnostics Tool in Windows 7 64 bit. I have 16G RAM. It reported hardware problems. This is a new system with new memory. When the system rebooted I was expecting an icon in the task ...
16
votes
1answer
3k views

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 ...
16
votes
2answers
38k views

98-100% memory use, no process uses more than 25MB

I am having intermittent issues with my gaming computer. Sometimes, while playing Battlefield 3 (only 2 times the problem has occured), my memory usage goes to 100% of my 16GB machine. I close down ...
16
votes
2answers
6k views

Why does the memory usage in “top” not add up?

I have noticed that sometimes when I run top, the memory usage of each process in the process table does not seem to add up to the total. For example, in the dump below, top says that I am using 16 ...
16
votes
5answers
71k views

How do I make Windows 7 less aggressive in caching memory?

I've noted recently that Windows 7 on my machine has been complaining about running out of memory and that I should close some programs. It would then usually point out a program I have running that ...
16
votes
2answers
550 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 ...
15
votes
10answers
13k 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 "...
15
votes
6answers
42k views

How does Motherboard and CPU affect RAM choice?

I am seeking advice on which memory to use with my motherboard and CPU. Below are my components and some relevant information extracted from their official websites. NOTE: Although this is a very ...
15
votes
4answers
12k 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 ...
15
votes
2answers
5k 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, ...
15
votes
5answers
3k 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, ...
14
votes
6answers
5k 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
votes
8answers
16k views

Running Windows with defective RAM

Is it possible to run Windows (7, x64) with a defective RAM module? More precisely, is there some way to tell Windows not to allocate a known bad address or block of addresses? For Linux, there is ...
14
votes
6answers
1k 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
votes
1answer
10k views

What happens when linux OS out of RAM and no swap

What happens when linux OS is out of RAM and no swap is available?
14
votes
10answers
22k 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
votes
2answers
4k 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 ...
13
votes
6answers
5k views

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
votes
5answers
4k 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"...
13
votes
6answers
89k views

What is the relationship between CPU usage and RAM?

I have seen many times that my CPU usage is 100% and my RAM is only occupied for about 50%. What is the relationship between these two? How does one's performance affects the other?
13
votes
3answers
24k views

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 ...
13
votes
9answers
7k views

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. ...
13
votes
1answer
1k views

SK hynix memory module PC3-10600S-9-11-F3: What does “11-F3” mean?

I know what are: PC3 (same as DDR3), 10600 (bandwidth in MB/s), S (stands for SODIMM, it's RAM for laptops), 9 (CAS latency). Hynix HMT351S6CFR8C-H9 4Gb (front view): But I couldn't find ...
13
votes
6answers
17k views

Windows XP + PAE + 6GB RAM: See more than 3.5GB?

Firstly let me say I've seen a number of similar questions on SuperUser, and I don't think this is a duplicate. (Most address 4GB RAM installed. I have 6GB) I have Windows XP 32-bit running on a i7-...
13
votes
7answers
2k 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! ...
13
votes
2answers
1k 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 ...
13
votes
7answers
33k views

OSX Mavericks using way too much RAM

I recently upgraded my mid-2011 15” MacBook Pro to Mac OS X 10.9 Mavericks. Since then, my computer’s RAM usage spikes to the point of making my computer unusable. Specifically, anywhere between a ...
13
votes
2answers
12k views

How to diagnose ballooning OS X kernel_task and wired memory usage?

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 issue!)....
13
votes
1answer
818 views

increase desktop responsiveness on linux while swapping

All GNU/Linux distributions I tested so far have the problem that whenever the ram gets filled and the system begins swapping, the whole desktop and graphical user interface becomes unresponsive as ...
12
votes
9answers
28k views

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 ...
12
votes
6answers
91k views

Windows 7 x64 - How can I test my memory?

People tell me that my computer may have some bad RAM. Is there a way to test it without special equipment?
12
votes
5answers
2k views

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
votes
8answers
17k 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
votes
2answers
2k views

Windows says RAM ran out while there is still 4 GB of physical memory available

This System Information is from Process Explorer. There is still physical memory available but the system shows nearly no RAM left. Task Manager also shows that about 74% of total RAM is used. Since ...
12
votes
5answers
26k views

Windows 8 out of memory?

I thought that Windows 8 was supposed to be better with memory than Windows 7. So far, that is not my experience. When I boot up my brand new laptop (Samsung NP550P5C-S03CA Intel Core i5 3210M 8GB ...
12
votes
3answers
12k 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?
12
votes
1answer
6k views

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 ...
12
votes
6answers
6k 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 ...
12
votes
2answers
18k views

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 exactly ...
12
votes
4answers
78k views

Installed memory 4GB but only 1.93 GB is usable shows in system properties dialog?

In my Intel Core i5 2.80 GHz CPU , DH55HC series Intel mother board machine installed with windows 7 64 bit machine, when I right click my computer and see system properties I see that "Installed ...
12
votes
1answer
838 views

What does + in the memory type of DDR4 RAM mean?

Some mainboard producers add a + to the specification of supported memory types (e.g. for ASRock X99 Extreme 3 supports DDR4-3000+). Does DDR4-3000+ somehow differ from DDR4-3000? The wikipedia ...
12
votes
2answers
10k views

Difference between port mapped and memory mapped access?

Can anyone explain what's the difference between port mapping and memory mapping, and what having both accomplishes? Why is there port mapped, how does it differ in structure from memory maps, and is ...
12
votes
2answers
8k views

What are these different kinds of memory usage in Windows 7 task manager?

In Windows 7's task manager, I can select different columns to show. There are a bunch that are related to memory and memory usage, but I'm not sure what it all means. I have a Dutch installation of ...
12
votes
2answers
3k views

Is there any command like time, but for memory usage?

Is there any command like time, but that reports more statistics? It would be great if I could do something like: $ statistics some_command time: real 0m3.002s user 0m0.000s sys ...
12
votes
5answers
14k views

Windows 7 (x64) memory usage climbs to 90%+ while system is idle?

I have windows 7 with 4GB of RAM. When the system starts from a fresh boot I start with about 33% usage. However, if I walk away with my PC idle for a few hours, or over night, my PC typically climbs ...