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

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2answers
15k views

RAM upgrade (2GB+2GB) OR (2GB+4GB)?

I have a Hp 630 laptop. 2 DIMMs and 2GB(1066 Mhz) of ram on one slot. I want to upgrade it. At this point I have two solutions: upgrade to 4gb (2x2 Gb) upgrade to 6gb (1x2 Gb + 1x4 Gb) Which one ...
1
vote
2answers
705 views

Windows 7 x64: 3900mb of 4gb RAM usage, even when (almost) nothing running

As the title suggests, I am having a problem with memory usage. I have had my computer (Vaio AW11Z/B laptop) for over a year now, and it was running perfectly until I guess a day or two ago. Now ...
10
votes
10answers
32k views

8GB RAM on XP Professional [duplicate]

I recently installed 8GB of RAM onto a quad core workstation (HP xw8600) running Windows XP Pro (32-bit). I added the /PAE switch in the boot.ini file, but the SysInfo is saying 3GB total memory ...
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 ...
6
votes
3answers
5k views

How to fix task manager memory column if it shows lies

I have a problem in showing memory in task manager with memory and paging columns. Why it shows so small size usage? And maybe anyone knows how to fix it? Here is a screenshot(working set, memory, ...
4
votes
2answers
525 views

How do I troubleshoot a slow Windows computer? How do I know if more RAM can make a difference?

How do I troubleshoot slowness in a Windows computer? How do I know if RAM is an issue? In this case Windows Explorer is slow. (but it is quite subjective) I think it might be because of many ...
4
votes
6answers
11k views

I want to install more than the supported amount of RAM on my PC. Is it likely to work? [closed]

I have a Shuttle SG32G2 PC that I'm using as a small home server. It has two 240-pin DDR2 RAM slots, and officially supports 2GB per slot, for a maximum of 4GB of RAM, which I already have installed. ...
3
votes
3answers
7k views

Is it better to have 4GB RAM in dual channel or 6GB as single channel?

I know there a lot of posts about ram but I'm still confused about it. I'm building a new system and because it was cheaper, I bought a 6GB kit from Corsair. So I'm wondering if I would be better off ...
3
votes
2answers
325 views

How do I know what type of RAM I have?

I've got an old computer from a friend of mine that does not use it anymore i order to use it like a test server. Now, I'd like to upgrade it, by adding to it some RAM. Wondering about how to know ...
3
votes
6answers
3k views

Windows 7 on a 64-bit computer

I read on Wikipedia that Windows 7 on a 64-bit PC needs twice as much RAM as on a 32-bit PC. I understand why is that: every number stored in memory takes 8 bytes rather than just 4. That, in simple ...
1
vote
1answer
283 views

If the brand, size, MHz speed and latency settings of two sets of RAM are the same, will they still work correctly in dual channel mode?

I'm planning to buy 2x4GB strips of DDR3 RAM at 1600MHz 9-9-9-27 (see here) The box that it is going in will be used to run virtual machines. This means that I may want to stick another 8Gb in it at ...
1
vote
3answers
594 views

Upgrade RAM or CPU [closed]

I have an IBM X31 with 1GB of RAM and a 1.4GHz proccessor running Windows 7 Home premium. Which would be more worthwhile to upgrade, the RAM to 2GB or the processor to a max of maybe 2GHz? Thanx in ...
0
votes
5answers
160 views

Add RAM to my desktop

I've never added RAM to my desktop PC yet. It has an Intel e5700 processor, and currently has 2GB of DDR3 RAM. Also it is 32-bit Windows 7. Am I right in thinking I can just buy some extra RAM, say ...
171
votes
9answers
21k views

Why does emptying disk space speed up computers?

I have been looking at a bunch of videos and now understand a bit better how computers work. I better understand what RAM is, volatile and non-volatile memory, and the process of swapping. I also ...
21
votes
1answer
26k 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 ...
23
votes
9answers
107k views

Why/how is svchost.exe using 6.5GB of 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. ...
16
votes
4answers
11k views

Invisible memory leak on Linux - Ubuntu Server (not disk cache/buffers!)

August 2015 Summary Please note, this is still happening. This is not related to linuxatemyram.com - the memory is not used for disk cache/buffers. This is what it looks like in NewRelic - the system ...
17
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2answers
11k views

RamMap “Empty standby list” drastically speeds up PC. Is there a better way to do this?

Many people are educated on how Windows Memory manager caching work by reading Microsoft white papers, etc. However, there are relatively few documents that describe real-world performance issues ...
16
votes
2answers
17k views

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 ...
30
votes
1answer
3k views

16 GB of my 32 GB of memory is unusable, marked as “hardware reserved” and [duplicate]

So I've googled around and tried a lot of stuff to fix this and none of it has worked. Half my RAM is hardware reserved, and I do some image processing of large collections of images, so I need that ...
22
votes
3answers
8k views

Which have better performance Two 2GB RAM sticks or One 4GB RAM stick? [closed]

I am planning to buy a new PC. The mainboard has 4 memory slots, The PC has Windows 7 64-bit installed. Which approach is better regarding the performance buying: Two memory sticks of 2GB? One ...
26
votes
10answers
31k 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 ...
13
votes
7answers
32k 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
5k 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 ...
4
votes
1answer
6k views

Who loads the BIOS in RAM during computer bootstrap

When the computer starts up, the code in BIOS is executed first. However, how is the code in BIOS loaded into the RAM for execution ? I have referred to this question - Is BIOS read from the BIOS ...
4
votes
2answers
7k views

Upgrading laptop RAM [duplicate]

(This question was originally asked for my specific laptop: Dell XPS 15 L502X. But it seems that understanding I gained from the upgrade experience I am able help my friends to decide upgrading RAM ...
4
votes
4answers
14k views

Should I use an antistatic wrist strap when changing the RAM on my laptop?

I am about to upgrade my laptop's RAM and I'm concerned about using an antistatic wrist strap. Is it smart to use one or not very necessary? What are the chances I could damage my laptop?
24
votes
3answers
79k views

CPU-Z says my PC3-10600 1333MHz RAM is actually PC3-10700 667MHz. Do I have 1333 or 667 MHz RAM?

CPU-Z says this: DDR3 4096 MBytes PC3-10700 (667 MHz) I am supposed to have PC3-10600 1333MHz. What am I not understanding? Or, is my RAM only half of what the label and seller claims it to be? ...
11
votes
2answers
7k 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 ...
11
votes
4answers
70k 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 ...
10
votes
3answers
11k 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 ...
6
votes
3answers
6k views

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 ...
6
votes
3answers
6k views

How can I dump the memory of a process in Windows 7?

Are there any tools to dump the running application from memory in Windows 7?
4
votes
3answers
26k views

4GB to 8GB RAM, what performance increase?

I am wondering whether it is worth upgrading from 4 GB to 8 GB of RAM. I know the question has been asked many times, but I can't transpose that to my case. I'm using Windows 7 64-bit. I did a test ...
4
votes
3answers
3k views

“Faster” RAM at lower clock speeds?

I've been kind of interested in the mechanics (er, electronics) of computer systems lately and after a bunch of research and looking at my computer's properties, I've come across something strange. ...
3
votes
2answers
1k views

Which memory is accessed by the initialization code on a PC?

CMOS, DRAM, ROM and EPROM are all types of memory found in PC systems. Explain which of these is used to contain the initialisation code and which are accessed by this code. The first answer ...
2
votes
2answers
6k views

Mac OS X using over 4 GB of memory with nothing running

My Mac seems to be using a ridiculous amount of memory when close to nothing is running. Immediately after restarting my computer, and only starting up a terminal and the activity monitor. How could ...
2
votes
1answer
205 views

How do I find out if I have SATA 2 or SATA 3?

I need to upgrade a Dell Inspiron 5520 mid 12 laptop with a Samsung 850 pro SSD. How do I check whether my laptop with a 3rd gen i7 processor has SATA 2 or SATA 3?
2
votes
4answers
65k views

Difference between DDR3 SDRAM and DDR3 SODIMM for laptop

I have an ASUS A55VD-NS51 laptop with 6GB of RAM and I've been wanting to upgrade the memory for a while. I've finally decided to go through with it, but I am unsure as to whether to buy DDR3 SDRAM or ...
2
votes
3answers
12k views

Making Windows XP run on 256MB of RAM

I have a Windows XP system which has only 256 MB of ram, and unfortunately upgrading the RAM is not an option (it needs DDR, a DDR2 chip didn't fit and I'm not in town long enough to order one ...
1
vote
2answers
894 views

Run java in php apache2

I wrote a simple PHP file which calls a java application. It runs on cli without problems but I can't run it on browser. Output: "Java HotSpot(TM) 64-Bit Server VM warning: ...
0
votes
3answers
4k views

Photoshop sees wrong graphic card

I've got i7 processor, 8 GB of RAM, integrated Intel HD Graphics 3000 and GeForce 540M in my notebook. For some reason in "Edit > Performance > Graphics Processor Settings" Photoshop CS6 sees only ...
12
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 ...
12
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5answers
85k 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?
10
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1answer
11k views

What happen if we reduce the size of hiberfil.sys

I today discovered that we can set the size of the hiberfil.sys using powercfg -H -size 100% command line tool. Ignoring the hard space you will get, what else will change if we set it to powercfg -H ...
9
votes
4answers
6k views

In Windows 7, is there a way to know how much memory a service is using?

In windows 7, is there a way (by using common interface or a custom utility) to know how much memory a specific windows service is using ? It seems most services are hosted by svchost.exe processes ...
9
votes
2answers
3k 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?
8
votes
2answers
3k views

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 ...
6
votes
2answers
10k views

ECC registered vs ECC unbuffered

I would like to build a storage server (based on GNU/Linux or FreeBSD) which will be on all the time. To prevent data corruption (which is unlikely to happen as I never had such a problem, but better ...
5
votes
1answer
10k 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 ...