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

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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 ...
8
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2answers
21k 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?
6
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1answer
812 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 ...
6
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4answers
487 views

Are there any benefits to using identical memory modules?

Are there any benefits from running eg. two identical 1G rams over two different, but same-clocked? The motherboard doesn’t support dual-channel operation.
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2answers
2k views

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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1answer
8k 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 ...
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5answers
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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 ...
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1answer
3k views

How much of a performance hit using asymmetrical dual channel RAM?

As a follow-up to my question Can a P55 chipset support 6GB as 2GBx3?; I understand there might be a performance hit using an odd-number of sticks. My question therefore is - How much of a ...
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1answer
17k views

Is DDR4 RAM compatible in a DDR3 RAM slot?

I'm looking to get a RAM upgrade for my SONY VAIO VPCEH25FM. If I get DDR4, is it compatible with a DDR3 slot?
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4answers
433 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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3answers
3k views

Is 1GB + 1GB RAM better than 2GB +0.5GB?

My laptop has two slots for RAM, and currently has two 512 MB chips, for 1 GB. Windows XP is running terribly slow on it, so I want to upgrade the RAM. I could buy two 1 GB chips to replace both of ...
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3answers
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Are there any advantages to running a 64 bit OS on 4GB of RAM? [duplicate]

My laptop has 4 gigs of DDR2 RAM and I am currently using a 32bit windows 7 OS. Will I notice any performance difference if I upgrade to 64bit or does all the benefits of X64 start at 5GB of RAM?
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1answer
759 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 ...
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3answers
5k views

8 GB RAM installed, only 7.5 GB usable. Windows 7 64-bit

I just upgraded my computer's RAM, adding another 4 GB to the computer. Windows 7 acknowledges that 8 GB is installed, but says only 7.5 GB is accessible. Any idea why? I thought since I had the 64-...
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4answers
32k 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 ...
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2answers
2k views

How safe is it to 'mix' RAM?

I have a new Qosmio X70 laptop and it has 4 dimms. 2 of the dimms are on the under side of the motherboard and it will be quite difficult to get to. The manufacturer states that it is DDR3L 1600 MHz. ...
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2answers
5k 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 ...
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2answers
3k 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 '...
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3answers
89 views

Frequent BSODs on Windows 7 Professional after replacing Graphics Card (worked fine for ~2 weeks prior)

My computer died around 3 weeks ago due to the Graphics Card failing (Asus Direct CU II 7950, an old 1TB Samsung HDD also failed to power up after this) and just 2 weeks ago we replaced it with a new ...
3
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2answers
107 views

How important is to have matching speed of RAM? [duplicate]

I have a 4GB DDR3 800Mhz recently I installed another 4GB. It turns out it's DDR3 667MHz. Does it really matter I should own both rams 800MHz? Slot1 shows recent RAM installation. ALSO I don't ...
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2answers
6k 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 ...
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2answers
2k 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 ...
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5answers
1k 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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3answers
2k 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
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1answer
16k views

Window 8 : RAM usage (committed memory) [duplicate]

I have a 4 GB RAM memory. In task manager you can see tha Committed memory is 5,6/7,9 GB RAM. Why that if In use memory is just 3,1 GB ? Is Windows using the Page File ?
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1answer
1k views

Show historic hardware changes in windows 7

Brief question: In Windows 7, Is there a log where I can see the ram memory of the system at different dates? Explanation: A friend of mine have detected some missing hardware (ram sticks) on some ...
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1answer
6k views

explorer.exe eating memory like crazy

I have a Windows 7 operating system. When I boot up and do nothing, explorer.exe starts to consume memory like crazy, like around 2GBs and so. When I kill it from task manager, everything is still ...
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2answers
1k 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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4answers
504 views

Why is 4.5GB of my 8GB of RAM not recognised?

I have recently purchased 8 GB of RAM to upgrade my system to go along with a new shiny i5! When I run speed checks on my system online I get told I only have 3.5 GB of RAM, also in Task ...
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1answer
5k views

how to check of RAM Slot is broken

I noticed that my MacBook Pro 5,5 middle 2009 is very slow so i thought i had some malicious software in it but today i went to check something about the hardware in the computer under "About this Mac"...
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5answers
206 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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2answers
996 views

How to fully use the 4 GB of RAM in my Laptop under Ubuntu 9.10 - 32-bit

I have a Toshiba A100, which I upgraded to 4 GB of RAM. The hardware startup indeed shows 4 GB of RAM, and I recently installed Windows 7, just to see how it behaves on it. So far so good, it displays ...
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2answers
1k views

What's the maximum RAM a single slot can take in my Sony Vaio?

I have a Sony VAIO laptop (VGN-SZ1HP/B) that unfortunately has only one memory slot working (see my previous problem here), and it's very annoying as I'm limited to 1GB of RAM. According to Crucial, ...
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2answers
862 views

Windows updates and driver search consume massive amounts of RAM.

I have noticed on several Windows 7 machines that Windows updates and Windows driver search can cause svchost.exe to consume excessive amount of RAM. In the case of Windows updates, it seems that all ...
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2answers
305 views

Windows 8.1 32bit version upgrade to Windows 10 64bit version

I have a windows 8.1 32bit installation with 4GB of RAM and a x64 capable CPU. I've upgraded the RAM to 8GB and want to do the Windows 10 upgrade... as far as I'm aware the upgrade will do a like for ...
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1answer
50 views

Looking for Clarification on Binary Prefix Logic / History vs. SI Prefix

Recently I've looked into the SI and Binary prefixes used for digital storage / computing in general, and I'm still not sure I understand the logic behind the Binary prefix (actual question at the ...
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1answer
956 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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2answers
211 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 usage....
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3answers
765 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 ...
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1answer
7k 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 ...
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3answers
596 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 ...
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1answer
860 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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1answer
1k 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
3k views

Is RAM completely cleared when you turn off computer after pulling power? [duplicate]

Would there by some way to pull the power instead of conventional shut down, and recover the contents of ram without loading the operating system upon the next start-up? I'm trying to recover files ...
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3answers
10k views

How to check how much RAM is supported by my Laptop

I've been using a HP Pavilion DV 6000 TX laptop for quite some time. It has 1 GB of RAM as of now. How can I know if I can add additional RAM to this laptop? I would like to increase the RAM to as ...
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1answer
3k views

Help with RAM speeds? and Is dual Channel worth it?

I ran crucial's diagnostic software and it says I only have 2GB of ram on my laptop. It says I can have up to 8GB of ram and that I have 1 free slot. So I will buy like another 2GB stick or maybe 4GB ...
0
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1answer
314 views

Not compatible RAM module

According to the specs of my Fujitsu Esprimo P2560 desktop the maximum RAM is 8 GB. There are 2 slots and currently there are 2+2 GB installed. I tried to upgrade the memory bank by removing one of ...
0
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1answer
311 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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3answers
17k views

What is the difference between GDDR3 and DDR3?

I am trying to buy a laptop, and I have seen in many place that they show GDDR3 and sometimes DDR3. What is the difference between them? afaik DDR3 is a type of RAM used for system memory, while ...
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3answers
3k views

What is the maximum supported hardware RAM in Windows 32-bit?

I want use 4GB of RAM. Can I use in Windows XP 32-bit? Or should I go for Windows XP - 64-bit? Does it support 4GB of RAM? Does Windows 7 32-bit support more than 4GB of RAM, or is >4GB support ...