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

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1answer
517 views

Matched DRAM — Why? Is it important?

Crucial's website tells me: Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules. What exactly does that imply (what exactly ...
4
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2answers
1k views

Can I use laptop RAM in a desktop?

The specifications of my system say it supports 400 MHz and 533 MHz DDR2 unbuffered SDRAM. I have a 1 GB DDR2 PC2-5300 laptop RAM module. Can I use this in my desktop? If not, what exactly is the ...
4
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6answers
9k 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. ...
4
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3answers
8k views

Can RAM with a higher speed work?

I have the memory below and I am looking at using the one below it, would it be OK to use? It appears to be a faster speed, is that OK? Also, mine says PC 4200, the new one says PC 2 5300 and the ...
4
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4answers
372 views

In winxp, I have 4GB of RAM, am using 1.77GB, but programs keep paging out to memory. Why?

All in the title. What's the point of more RAM if my programs will page out instead of using it? To be more specific, here's an example: I open 12 tabs in a browser. I look at one of them while using ...
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5answers
1k views

3GB of RAM showing up as 2GB

Last year I built a Core i7 920 system based on the ASUS P6T Deluxe motherboard. I have 3x1GB of DDR3 (triple-channel configuration), but only 2GB is being reported by: Windows XP, CPU-Z, the BIOS. Is ...
3
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2answers
2k views

How does copying files work with regards to RAM, and can I speed this up?

I have always wondered why my computer would copy files to an external drive at first at high speed, and then 'hang' for a while before continuing. When I upgrade RAM from 1GB to 2GB I noticed this ...
3
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0answers
635 views

Is it possible to use GPU memory as more main memory?

I have a ATI Graphics Card with 1G of RAM. GPU-Z says that 143MB (dedicated) and 75MB (dynamic) is being used on the card (GPU). Is it possible to get your PC to use GPU as more RAM (main memory) for ...
3
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1answer
2k views

Memory is being appropriated

I am having an issue with my motherboard "appropriating" memory. I have 2x2GB installed (exactly the same chips, brand new). The bios shows 4096 total with 1152 appropriated leaving 2944. When I only ...
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3answers
4k views

Does ReadyBoost slow down systems with more RAM?

I have 4 GB of RAM and would like to make use of ReadyBoost to speed up hard drive access, by taking advantage of its hard drive cache method. However, as I understand the technology, ReadyBoost ...
3
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2answers
4k views

How to free memory in Mac OS X?

I have Macbook Pro running Mac OS X Leopard (10.5) with 4GB RAM. I use some applications (Parallels for Windows (1GB RAM), Firefox, mail, freemind, iTunes, Finder, Terminal and that's it), and I can ...
3
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2answers
232 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 ...
2
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3answers
410 views

Memory expansion risers for desktops?

Pretty simple question. Is there any hardware for desktop PCs that allows you to add more DIMMs to the bus? I have seen this hardware for more expensive servers, but wondered if there was a similar ...
2
votes
3answers
8k views

Excel ran out of resources while attempting to calculate one or more formulas

I received the error message "Excel ran out of resources while attempting to calculate one or more formulas" on ONE of my computers (Out of 2). My worksheet contains: (Inside a single worksheet, not ...
2
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1answer
3k views

Hardware error messages from syslogd

I have a 64-core AMD server running CEntOS on which I was running a long job. In the midst of the output, I see these lines. It appears to be a memory error. How severe is this and what exactly does ...
2
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5answers
1k views

Screen flicker since new RAM installation

My work PC was upgraded by the tech guys (RAM only) and ever since my screen has been flickering but they do not know why this has happened and have yet to fix it. Does anyone have any ideas as to the ...
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5answers
4k views

How to know which RAM I can/should buy for my PC?

I have a relatively old PC (5 years or more) which has only 1GB of RAM. I'm running on Windows 7 and unfortunately it doesn't like being so senile... I have a Gigabyte mother board but I have no ...
2
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2answers
1k views

How does the number of sticks of RAM influence speed, for the same total amount of RAM? [duplicate]

Which will run faster: four 1GB sticks of DDR2 RAM, or two 2GB sticks? Will they run at the same speed? I'm just curious since they are sold in both sizes, and I have four slots, but only two sticks ...
2
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2answers
3k views

Installed 4GB memory but Windows XP 32 bit only reporting 2GB? [duplicate]

Possible Duplicate: 4 GB of Ram installed but only 2.97GB usable. What gives? I've just taken an existing XP Pro 32 bit system that had only 0.5GB of memory installed and maxed it out to ...
2
votes
2answers
2k views

Mixing DDR2 module sizes

I have an Asus M2N-E motherboard, currently with (qty 1) DDR2 module Kingston KVR533D2E4/1G. The board has 4 total slots. Going to upgrade and I'm wondering if I can mix sizes -- can I add a 2G ...
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2answers
2k views

Windows 8 64bit say low memory while 4+Gb free

I have windows 8.1 64 bit, 8Gb ram. My Task Manager shows 49% used ram, but I still get messages like "Windows is low memory, we recomend to close application". It always says that about the ...
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2answers
138 views

Performance issue with my system

Recently while using my laptop (Dell XPZ15z) all of a sudden the CPU usage is spiking to 80-100% then will drop in say 5-7 sec. I am not running any application or process that requires such CPU ...
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3answers
1k views

Windows 8 and memory consumption [closed]

My current system should have enough memory (4GB), but it's the lower average right now and if I want to run multiple applications at once - which is needed - memory is getting scarce. In addition to ...
1
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1answer
486 views

Combining multiple DIMMs in one memory channel

Every electronics engeneer knows that connecting more chips on the same line increases its capasistence and, thus, degrades the frequency. So, memory speed must be dependent on the number of chips in ...
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1answer
648 views

Stop truecrypt from consuming all available physical memory

I have many truecrypt containers that contain random files that I am trying to consolidate into another set of containers that are better organized this time. To do this requires me to copy all the ...
1
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1answer
605 views

How do I upgrade my graphics on my laptop?

I recently bought an HP dv6 6180us laptop. The PDF datasheet says that I have a Radeon HD 6770M switchable graphics card with 1024 MB of GDDR5 RAM and up to 4096 MB total graphics memory. How am I ...
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5answers
190 views

Windows XP: Why the machine slow for a minute when I put my machine for some time?

I have a question for windows behavior. I was running a bunch of applications in my xp, they run smoothly at that moment. Then I leave my machine alone for some time, say a night, a few hrs, when I ...
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5answers
770 views

Why can't my computer speed up again after closing large applications?

My computer is running Windows XP and only has 1GB of RAM. After launching some massive applications (like Eclipse and SQL Developer) the computer slows down considerably. The obvious symptom of this ...
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1answer
179 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 ...
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1answer
781 views

Installing two RAM sticks causes problems; using only one of them doesn't?

I have 1GB RAM in my machine - two 512MB sticks. When I run Windows Memory Diagnostics with both memory sticks installed it reports errors. If I install just one stick then there are no errors at all. ...
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2answers
612 views

Memory works fine separately, but not together

I've been given four 1GB Corsair DDR2 memory modules, and am trying to fit them into my computer but am getting BSOD on Windows XP and errors in Memtest86+. I've tried to identify if one particular ...
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1answer
131 views

Deactivate RAM segments

I have got a RAM memory stick for which memtest shows errors for specific memory addresses. I was wondering if it is possible to prohibit the operation system (Win7 in my case) from using these? I ...
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1answer
3k views

svchost eating up memory

I'm running Windows 7. It seems that svchost is eating up a lot of memory. The user name for the particular svchost instance is "Network Service". The description is "Hose Process for Windows ...
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3answers
692 views

Ram capacity of my computer

2 years ago I bought a Dell Dimension 9200 desktop computer as a high end gaming computer (at least, back then it was a top of the line computer). The computer was ordered with 4GB of RAM, but came in ...
0
votes
1answer
820 views

Windows 7 x64 Out of Memory Error - With over 1GB still available [duplicate]

I've been getting sporadic "Out of Memory" popups while playing games in fullscreen windowed mode lately (namely Arma 3 and BF4). I didn't get these before switching from fullscreen to fullscreen ...
0
votes
1answer
174 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: ...
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0answers
219 views

Why all of the sudden is my Processor and Memory Subscore (Windows Rating) abnormally low?

2 days ago I opened my van door to get out my computer tower, and it fell to the ground. When I opened it everything looked ok but theres a problem. when I login windows, my windows rating subscore ...
0
votes
1answer
202 views

Will adding extra RAM in my computer speed it up?

I have a 5 year old Dell Inspiron 530 desktop computer which is slowly grinding to a halt. Someone told me if I put extra RAM in it will speed it up. On the motherboard, there are four slots but only ...
0
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0answers
134 views

Windows 7 64-bit is only using 3 GB out of 4 GB [duplicate]

Possible Duplicate: Why does Windows only show about 3.5GB of my 4GB+ of RAM? 64-bit Windows 7 can only use 3.25GB of RAM instead of 4GB? I'm using Windows 7 SP1, 64-bit, and the system ...
0
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3answers
541 views

Multiple questions about DDR2 RAM

Does dual channel work with a 32-bit operating system or will I need to install a 64-bit operating system in order for it to work? If I had 2x 512MB 667 MHz and 2x 1GB 667 MHz, both in dual channel ...
0
votes
1answer
2k views

Will Windows 7 32 bit edition support 8 GB RAM? [duplicate]

Possible Duplicate: Memory sticks, 32 and 64 Bit OS Will Windows 7 32 bit edition support 8 GB RAM? or it will only support 4 GB. Will i have to buy 64 bit version if i want to use 8 GB ...
0
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4answers
815 views

How can I free memory on linux

When I use top to see memory usage, I have 65gb ram but only 1.3gb of it free and remaining is shown as used. When I ran my program It gives memory insufficiency error. Although no other program is ...
0
votes
1answer
6k views

4GB Memory Upgrade for Acer Aspire 5102WLMi

I have bought a 4GB memory upgrade (2x 2GB PC2-5300 SODIMM) for my Acer Aspire 5102WLMi (Aspire 5100 Series) laptop, I installed the two memory modules correctly however with 4GB installed the laptop ...
0
votes
8answers
6k views

4GB memory seen as 3GB in BIOS

I have a 945GCM S2L Motherboard which has 4GB memory (2x2GB) running windows vista x64. The RAM is getting reported as 3GB in the BIOS, Total Physical Memory also shows 3GB, Task manager also shows ...
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2answers
73 views

Changing RAM in Laptop

I have a Dell Vostro 2520. I am planning to upgrade the amount of RAM to 6GB. My laptop has a Core i3-2328 processor and is currently running Windows 7 ultimate , but after the RAM upgrade, I plan to ...
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2answers
21k views

Windows 7: Why is not all my memory usable? [duplicate]

Possible Duplicates: Where did the other .8 GB of RAM go? Windows x86 physical memory is 24-bit? Why is usable RAM less than total RAM? I have a computer with 4GB RAM. Why isn't it all ...
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votes
1answer
135 views

Upgrading RAM to 8 GB – use 2×2 GB or 4 GB?

I have a motherboard with four RAM slots. I already installed 4 GB (2×2GB, 1333) of the same RAM type (dual channel) and I want to upgrade RAM to 8 GB – so what is the better option to upgrade to? ...
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votes
3answers
300 views

I had 6 GB RAM, now Windows is telling me I have only 2 GB. Where's the other 4 gone?

Is there anything I can do to see what happened to it? Is there a chance it came loose? How can I check if it's fried? edit nobody stole my RAM. I didn't physically do anything to it. I have a Dell ...
282
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18answers
100k views

If 32-bit machines can only handle numbers up to 2^32, why can I write 1000000000000 (trillion) without my machine crashing?

32 bit computers can only store signed integers up to 232 - 1. This is why we have run out of ipv4 addresses and have entered the 64 bit era. However, the number 232 - 1 (2,147,483,647) is not as ...
69
votes
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 ...