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

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69
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8answers
5k views

How can a computer/OS tell what kind of RAM is in the machine?

How can Mac OS X tell what kind of RAM is in the machine? For example I was working on one that had DDR3 RAM @ 1600MHz and I thought it wasn't possible to know the RAM without physically opening the ...
29
votes
3answers
27k views

How do I interpret the statistics of a memtest run?

I have a notebook here that I suspect has a faulty memory module. I therefore downloaded Memtest86+ and let it run. Note that the screenshot is not my actual one, it's provided by memtest86+ How ...
29
votes
19answers
11k views

What applications, if any, benefit tangibly from more than 4GB of RAM? [closed]

I looked through here for a bit, but didn't see this question. I am questioning whether it is worth putting more than 4GB of RAM into my current desktop, and whether there are applications that will ...
17
votes
6answers
58k views

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 ...
12
votes
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! ...
35
votes
11answers
13k views

Will my computer slow down if I install multiple operating systems?

Many of my friends have said that installing multiple operating systems on a single PC slows down individual OS's because the total RAM gets divided among the OS's. Is there any truth in the above ...
20
votes
7answers
27k views

How does VirtualBox's memory usage work?

I've been running several VM's with VirtualBox, and the memory usage reported from various perspectives, and I'm having trouble figuring how much memory my VMs actually use. Here is an example: I ...
19
votes
4answers
24k views

Why does Windows 7 use the page file when there's free physical RAM?

I am using Windows 7 64 bit with 8G ram. After some use, I feel Windows is getting sluggish. The drive is thrashing. When I look at the resource monitor and disk activity, I see a few instances of use ...
10
votes
1answer
10k 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 ...
4
votes
3answers
3k views

Reserve RAM for cache and buffer

I usually run many programs and virtual machines on my desktop. The CPU isn't the bottleneck but the memory. (Buying more memory isn't a solution because it's not my own computer.) I started ...
13
votes
2answers
16k 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 ...
12
votes
7answers
8k 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 ...
5
votes
8answers
3k views

How do you use 4GB of RAM? [closed]

I have a Quad Core Intel PC with 4GB of RAM - I've been using it over a year to run web server stress tests (ab.exe -n 5000 -c 500), encode HD video, play games, open dozens of tabs in multiple ...
16
votes
3answers
32k views

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 ...
7
votes
3answers
3k views

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 ...
21
votes
2answers
24k views

What is /dev/mem?

Presumably it's somehow related to memory? What would sudo cat /dev/urandom > /dev/mem do? Trash all RAM? All non-kernel virtual memory? None of the above?
14
votes
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, ...
13
votes
1answer
2k 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 ...
13
votes
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 ...
9
votes
2answers
14k 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 ...
9
votes
6answers
50k 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 ...
7
votes
4answers
7k 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 ...
3
votes
6answers
24k views

Why/how is svchost.exe using all of my memory?

What is going on here? I have almost nothing running. By almost nothing, I mean Firefox, and some background network applications that are entirely passive and would never use this much memory. ...
1
vote
2answers
48k views

How can I tell if my motherboard supports DDR2 or DDR3 RAM?

I'm going to be buying 4 gigs of DDR3 RAM. I don't think I can run 5 so I'll just remove the single gig of RAM that I have in now. How can I tell if my motherboard will support DDR3 RAM? I ran CPU-Z ...
22
votes
10answers
22k views

Computer slow after installing 32GB RAM

I'm currently running very large network simulations for my PhD research, for which I need lots of RAM. I have a Core i7 2600K processor with a Gigabyte GA-Z68AP-D3 motherboard, running Windows 7 ...
21
votes
1answer
3k views

Windows 7 RAM says only 16 GB of 24 GB of RAM is available

I have Windows 7 on a gaming PC. I have an Asus Rampage Formula 3 motherboard with 24 GB of RAM. When I go to system properties, it shows that I have 24 GB of RAM, but it says in parenthesis ...
18
votes
7answers
2k views

What to do with a ton of extra memory?

I have 8gigs of RAM in this machine. I never really use more than say 4gigs (includes my virtual machines I use for dev testing). What can I do with this extra space to best improve system ...
6
votes
3answers
13k views

Is it the address bus size or the data bus size that determines “8-bit , 16-bit ,32-bit ,64-bit ” systems?

My simple understanding is as follows. Memory (RAM) is composed of bits, groups of 8 which form bytes, each of which can be addressed ,and hence byte addressable memory. Address Bus stores the ...
6
votes
2answers
6k views

How do I detect the RAM memory chip specification from within a Linux machine

I'd like to add more RAM to my Ubuntu installation ( running on a Dell Inspiron 640m ). Is there any inbuilt command or package to find out the current RAM chip specifications (manufacturer, type, ...
5
votes
3answers
43k views

How to analyze a memory dump on Windows after a blue screen error?

My computer running Windows 7 x64 crushes time to time. Could you please advise tool which could help with analyzing memory dump or point out possible reason and further troubleshooting steps? ...
4
votes
1answer
6k views

Installed Memory (RAM): 8GB (4GB Useable)

I have 4X 2GB RAM sticks installed, Windows 7 Ultimate x64 shows "Installed Memory (RAM): 8GB (4GB Useable)" in the system information. The motherboard says it supports up to 16GB of memory. I had ...
4
votes
1answer
2k views

Commit Charge < Physical Memory?

If Commit Charge is the total amount of physical memory and virtual memory; how can Commit Charge ever be less than Physical Memory? For example; I have in System Information in Process Explorer ...
3
votes
3answers
3k views

12 GB of RAM only 8GB is usable

Hi I'm running a Dell Studio XPS, with quad core processor, 2 threads per core, with 12 GB of installed RAM. My problem is according to windows, only 7.99GB of that RAM is usable. The really weird ...
3
votes
3answers
4k views

How to identify different types of RAM [duplicate]

Possible Duplicate: Can you tell DDR and DDR2 apart visually? I would like to know how to identify different types of RAM like: SDRAM, Dynamic RAM, DDR, DDR2, DDR3, DDR4
2
votes
5answers
731 views

Has anyone succesfully installed windows 7 on a system with a low amount of ram?

The system requirements from Microsoft about Windows 7 outline a minimum 1 gb for a 32 bit installation. Does anyone have any advice, tips, success or failure stories about trying to get it running ...
1
vote
6answers
1k views

Windows XP slowdown, what's to blame?

I run Windows XP and after a while it seems to get real sluggish. I suspect it's heavy memory consumption of Firefox, but have noticed several other programs are 'slow' to exit when I reboot. Is ...
0
votes
5answers
11k views

4GB of RAM on Windows 7 32-bit [duplicate]

Possible Duplicates: Windows XP and RAM 3.5GB+ Is there way to enable 4 GB RAM in 32-bit Windows OS? I installed 4GB of RAM on my Windows 7 Ultimate 32-bit (it used to have only 2GB). ...
12
votes
3answers
3k 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 ...
8
votes
1answer
1k views

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, ...
7
votes
3answers
3k views

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 ...
7
votes
3answers
385 views

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 ...
6
votes
3answers
6k views

Very high memory and CPU usage by the OS X Dock

I have a very annoying problem with the Dock process - after more than a few hours of uptime, the memory usage will spike to more RAM than I have. The process will begin to thrash the hard drive at ...
6
votes
1answer
20k views

Do I need to worry about hard faults?

I recently upgraded my RAM from 4x1GB Corsair XMS2 to 4x2GB Kingston Hyper-x because I found that I was maxing out when running FDT, Firefox 5 and Photoshop together for any length of time. At the ...
6
votes
5answers
8k views

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 ...
5
votes
4answers
574 views

Buying more RAM [duplicate]

I have 2 memory sticks, each 1GB, DDR2 operating at 667 mhz. I'm looking to buy 2 GB more, and have two questions: Should I buy 2 pairs of 1 GB, or 1 stick of 2 GB? Does it make a difference ...
5
votes
3answers
19k views

Hardware reserved memory issue

I've seen lots of folks having problem with **hardware reserved" memory issue in Windows 7/Server 2008 R2. I have it myself but not as huge as others have. Problem description When you install ...
4
votes
5answers
141 views

Is 1GB RAM so little?

I recently upgraded my old computer from Windows XP to Windows 7, and my computer became unbelievably slow. This is the hardware: Intel Pentium 4, 3.2 GHz 1GB RAM Radeon X800 GTO By unbelievably ...
4
votes
4answers
641 views

What hardware device eats up 1.4GB of my 4GB RAM?

I'm using Windows 7 64-bits on a Lenovo 530 notebook with 4GB of RAM. However, my task manager shows that the amount of RAM is only 2.6GB, and resource monitor shows that 1.4 GB is "used by ...
4
votes
2answers
2k views

PC running slow like molasses from BIOS to OS

A couple days ago I shut down and unplugged my Win 7 PC to change outlets on the power strip. It was running great with no issues or complaints. Startup times were like a minute at most and ...
4
votes
2answers
8k views

1.35 V RAM in a 1.5 V system - Will it fry or overclock?

The general question is: When installing low voltage RAM in a board that outputs a higher voltage to the memory module, will this fry the RAM or will it be like overclocking it? My specific case is: ...