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

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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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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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Can Linux scrub memory?

Does Linux have a mechanism to "scrub" memory? e.g. testing the memory and marking areas as dirty if they fail so that the system can continue to operate "safely" even with bad ram chips installed?!
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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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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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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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What is Performance Monitor telling me when my page faults / second are high?

I have a Windows 7 64-bit computer that is having performance issues. After some investigation, I have discovered that the page faults / second on it - as reported by Performance Monitor - are really ...
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How can I determine which RAM module is failing Memtest86?

One or many of the memory cards out of total 4GB (4x1GB) are failing. The following is memtest progress screenshot. It is always pointing to memory at 19xx MB and 50xx MB. Error bits are always ...
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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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how do people recover data from ram?

I'm just curious. I've read about law enforcement and what not recovering incriminating data from ram to get evidence, but how is it done? What kind of equipment would one need to recover files from a ...
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Commit charge is 100% full but physical memory is just 60% when using no page file

I have disabled the page file in my system (hard disk is too slow, cannot buy a new one right away, cannot move page file to another partition). When I see into Resource Monitor, using 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 ...
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322 views

Identifying lost physical memory

I am having issues with a server running out of physical memory and I'm having troubles discerning whether it is from my application's Java process or something else on the server. Let's take the ...
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658 views

Does RAM timings with n-n-n-3n value perform better than anything else?

I want to ask something: Does RAM timings with n-n-n-3n (i.e. 8-8-8-24, 9-9-9-27, etc) perform better or is optimized more than the other who doesn't (i.e. 7-8-7-21, 9-9-9-24, etc)?
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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?
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is it important to pair RAM by manufacturer? [duplicate]

Possible Duplicate: Are there any benefits to using identical memory modules? I have a pair of mismatched RAM sticks in my laptop (slots 3 & 4 in the following image): I have a ...
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How do I check speed of my RAM?

How can i know the RAM speed of my laptop? it's an Asus K40IN-VX128 How do I make sure if the frequency is 667MHz or 800MHz, I was thinking of an upgrade.
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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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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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How is a byte(s) loaded from a secondary-storage device in to RAM upon bootup, if RAM supposedly already contains bits in capacitors?

This has been on my mind today. If RAM's ICs contain bits stored in capacitors sitting there, how can you pull bits from somewhere and put them where something already is? For example, on bootup, ...
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How to see the content of RAM memory? [closed]

Is there any way to see the content of the RAM memory? From the first byte until the last one. I'd like to see where the OS and all the processes running on it are located in the RAM. Is this ...
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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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415 views

Why is the 8GB RAM I purchased only showing as 6GB?

I bought 8GB RAM from ebay. It was supposed to be 4GB + 2 x 2GB sticks. However, when I put in the RAM it only shows me 6GB. I thought it was only 4GB + 2GB modules working, however CPU-Z shows that ...
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407 views

Can I replace a SODIMM SDRAM with SODIMM DRAM in my laptop

Can I replace a SODIMM SDRAM with SODIMM DRAM in my Acer aspire 5742g? I want to update my memory, but all this types are confusing me. I looked at my computers memory and it says it has a SODIMM ...
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Upgrading from 8GB RAM from 2GB

I have a TOSHIBA Satellite Laptop which has 2GB RAM and an Intel Core 2 Duo CPU, T5750 2GHz. I am considering buying an additional 8GB RAM for the machine. I have little knowledge about hardware and ...
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4 GB of Ram installed but only 2.97GB usable. What gives? [duplicate]

Possible Duplicate: Where did the other .8 GB of RAM go? I just bought a used Macbook on eBay that came installed with 4 gb of ram. The first thing I did was installed Windows 7 using ...
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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, ...
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MemTest is returning large numbers of errors in Test 7, no matter what ram I use

I have been having issues with this computer, and since MemTest said that there were errors on my RAM, I figured replacing it would fix them... However, after replacing the old stick of RAM, I am ...
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Triple vs. Dual Channel with 6 sticks of memory

Assuming a Core i7 with a x58 chipset (IOW, triple-channel is supported)... I'm trying to decide if I need to buy triple channel memory kits. The MB has 6 slots, and I will populate them all. So I've ...
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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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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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1answer
544 views

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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359 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 ...
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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 ...
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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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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 ...
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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 ...
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What steps do you take when overclocking?

When overclocking your system? what steps do you take to get a maximum but stable overclock out of your system? I've personally just slammed up the FSB speed until my system can't run Prime95 for a ...
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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 ...
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I have 4 GB RAM, but the system only reports 3 GB? [duplicate]

Possible Duplicate: Windows 7 64-bit is only using 3 GB out of 4 GB My HP HDX 16 laptop has 4GB of ram and runs a 64-bit system. I always go into Dxdiag for some reason and i always see it ...
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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 ...
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Windows 7 doesn't use all the available memory

I've installed 12 GB of memory on my Windows 7 computer, and yes it is a 64 bit computer. I can see the memory in bios, as well as in the properties of the computer, but when looking in the properties ...
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What are the differences between MLC and SLC SSD drives?

SLC SSD drives cost a lot more than MLC SSD drives. Are there actual differences besides cost?
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Android - Emulator takes a long time to start up

I have successfully installed Android-SDK in my computer. Generally, I test application with my real android Device (HTC HERO) so it is fast to test an application on a real device. But when I try to ...
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Task manager: Windows XP RAM usage doesn't add up

When using the task manager in Windows XP Pro, the amount of RAM that is listed as being used by the individual processes is not adding up to the total memory used (as listed by the total commit on ...
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2GB limit on 32bit operating systems

Does the 2GB limit on 32-bit operating systems mean that each process can only access 2GB of memory or that all processes together can only use 2GB of the physical memory in total? So, is the 2GB ...
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How could I limit or even disable file cache on Windows Server 2008R2?

There is a machine, with a very fast RAID array, and a fast internet connection. But, it only got 8gb of mem, which runs out really quick, when the upload goes up. Any ideas how could I disable, or ...
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DDR3 Ram 1066 vs 1333?

Can I install DDR3 1333 RAM into a notebook that is currently running DDR3 1066 and will it have any effect on performance?