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

learn more… | top users | synonyms (1)

9
votes
2answers
347 views

How to “swap in” again memory from page file to physical memory in Windows at once (like linux swap-off)

Is there a way to swap back in (to put back all the memory data that was put into the page file (or swap, whatever you prefer)) memory on a windows PC? On linux, one can easily do this with the ...
9
votes
3answers
1k views

Web browser memory usage

How come web browsers are so heavy in memory? I have Firefox opened with two tabs, and it takes over 800 MB of RAM, Chrome with four tabs takes over 1.2 GB! I mean, what's up with consuming ...
9
votes
1answer
4k views

Is this RAM usage normal (huge non-paged pool)?

I bought an ultrabook today. It boots extremely quickly and everything, so obviously some sophisticated techniques are involved, but I'm confused because task manager shows over 80% RAM usage when I'm ...
8
votes
6answers
426 views

Just Dropped A RAM Inside Plastic Casing - Is it Dead?

I just dropped some laptop-sized RAM while it was in it's plastic wrapping onto my keyboard of my laptop. What's the chances of it failing because of this drop? If the RAM fails, would the failure ...
8
votes
6answers
49k 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?
8
votes
5answers
59k 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?
8
votes
5answers
35k views

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 ...
8
votes
6answers
12k views

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 ...
8
votes
2answers
15k views

Is a DDR3 MB compatible with DDR2 RAM?

If a motherboard's specifications say it supports DDR3 SDRAM sticks, would I be correct to assume it is also compatible with DDR2 RAM? Am I wrong, or does it depend on the motherboard?
8
votes
6answers
6k views

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 ...
8
votes
3answers
14k views

8.00GB RAM (3.22GB usable) in Windows 7 x64

I have set up Windows 7 Ultimate 64-bit on my PC. I have 8GB RAM and my BIOS states the correct amount (8192MB), but Windows (System Manager) says I have 8.00GB (3.22GB usable). give me a solution. ...
8
votes
7answers
59k views

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 ...
8
votes
4answers
2k views

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 ...
8
votes
3answers
6k views

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 ...
8
votes
2answers
10k 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 ...
8
votes
3answers
5k 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 ...
8
votes
3answers
5k views

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 ...
8
votes
3answers
200 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 ...
8
votes
3answers
254 views

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 ...
8
votes
6answers
44k views

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 ...
8
votes
11answers
14k views

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 ...
8
votes
1answer
697 views

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: ...
8
votes
2answers
562 views

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?
8
votes
1answer
2k views

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? ...
8
votes
2answers
3k views

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 ...
8
votes
3answers
1k views

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 ...
8
votes
1answer
2k 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, ...
8
votes
1answer
4k views

What is using up all my memory? - Ubuntu 14.04 LTS Server

This is a physical server, not a VPS, it is a Shuttle mini server with Intel(R) Atom(TM) CPU D525 @ 1.80GHz and a single stick of 2GB ram. It has a JMicron Technology Corp. JMC250 PCI Express ...
7
votes
8answers
2k views

run a computer without RAM? [duplicate]

I was reading about CPU fetch time, where I found that CPU take very less time to access data from RAM as compared to accessing hard disk, and that RAM is present for storing the information and data ...
7
votes
4answers
900 views

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 ...
7
votes
4answers
5k 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?
7
votes
10answers
4k views

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? ...
7
votes
4answers
2k views

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 ...
7
votes
5answers
25k views

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 ...
7
votes
5answers
687 views

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 ...
7
votes
5answers
11k views

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, ...
7
votes
8answers
484 views

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?
7
votes
3answers
455 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 ...
7
votes
1answer
324 views

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 ...
7
votes
3answers
906 views

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 ...
7
votes
3answers
8k views

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 ...
7
votes
2answers
6k views

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 ...
7
votes
4answers
2k views

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 ...
7
votes
3answers
15k views

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, ...
7
votes
3answers
1k views

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) ...
7
votes
3answers
10k views

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 ...
7
votes
2answers
1k views

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 ...
7
votes
3answers
20k 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 ...
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 ...
7
votes
2answers
2k views

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?