on RAM is there any difference in unbuffered un registered? and the inverse?
399746
Unbuffered is what you need to use.\n\nhttp://partsurfer.hp.com/cgi-bin/spi/main?sel_flg=partlist&model=DK214A&HP_model=&modname=Presario+S4020WM&template=main&plist_sval=Memory&plist_styp=subcat&dealer_id=&callingsite=&strsrch=&keysel=Memory&catsel=%3F
187610
If you are asking about RAM memory, it depends on what your BIOS (Basic Input/Output System) specifies (oversimplified: it's how much memory your computer will recognize).  If you are asking about hard drive memory (which is entirely different from RAM memory), that is limited only by the number of physical drives you have and how large each drive is.  There are many more types of memory that your computer uses. If you are interested, visit the link I've provided.
282501
Here's a few things you might want to think about:\n\nPress {windows} and {pause break} and see if it's reporting your full memory amount.  \n\nWatch the performance tab in task manager and watch your memory usage as you copy and paste.\n\nAre you managing your swap file manually or do you let Windows do it?  \n\nAlso, try running memtest to check your memory for errors:\n\nhttp://hcidesign.com/memtest/MemTest.zip
665218
No the thing above does not give more ram it just help manages it, but it does not do it well. It is a worthless peice of software. If you need it for a program then it definately won't help you. It won't add to your ram it will only optimze it abit, but it takes just as too much ram just to use it. just buy a new ram stick it is pretty cheap now.
1165662
Poor RAM\nRAM is directly related to the workrate of the CPU, more RAM would definetely take the load of the CPU.\nGood luck...
880108
You would have to first learn whether or not your motherboard supports the faster RAM.  http://www.crucial.com has a great tool to help you figure it out.
219178
Look up your system model on the support section of the manufacturer's page.  There will be a lot of technical jargon in the RAM section that you will probably not understand.  Copy it down and take it to a store that sells computer accessories (Best Buy, Circuit City, CompUSA, etc) and show it to the salesman.  If you want really good performance, tell him you want low-latency RAM instead of the budget high density crap.  Until then, increase the size of your paging file and hope for the best.  You can also disable unnecessary startup entries and background services.  Many people will tell you to use msconfig by going to Start - Run, typing "msconfig" then go to startup tab, this is not quite accurate.  To accurately disable the startup you should disable it from within the settings of the program itself.  This is to be sure that the registry entry is not recreated on the next reboot.  To disable background services that you don't need, go to Start - Run and type services.msc.  Disabling unnecessary services here will free up a lot of resources - probably more than anything else you could do to the system minus upgrade.  Also, you should optimize your caches.  If you can perform these tweaks effectively, you may not even need a RAM upgrade, but it's still recommended if you have less than 512MB RAM in XP.
481205
if you are using windows XP do this\nRight click on my computer --> proprieties --> advanced --> performance(setting)-->choose adjust for best performance\n\nthe go to advance -->virtual memory(change)-->\nallocate the paging file in the partition that dose not containing your operating system and it should equal 1.5*ram size , in your case 256*1.5 ... and choose no paging file in your OS partition
856142
RAM cannot store information unless your computer is running.  As soon as you turn it off, all the information in RAM is gone.
288945
In XP,  do a ctrl-alt-delete.\nIt'll bring you to a screen that shows different processes.  Click on performance, and it'll show the amount of memory used.
243674
To test the ram, start by only using one RAM module at a time and test it that way.\nAlso try a program called "MEMTEST"\nhttp://www.memtest86.com/
127597
I think there's a program called "MemTest" or "RamTest" or something along those lines.  Basically, look for some freeware that tests it - usually can be found on any of the "tech" sites.\n\nEdit: Yes, it is "MemTest" - I just "googled" it.  You may want to do the same.
628097
Imagine a block of memory from 0 to N. A cyclic buffer fills from 0 towards N, and when it reaches N it starts back at 0 again.\nThis kind of buffer needs to be "serviced" (have the data removed) before new data overwrites data that hasn't been removed yet.\nThere is normally an "in" pointer for incoming data, and an "out" pointer for outgoing data, If the "out" pointer reaches the "in" pointer, the buffer is empty again. If the "in" pointer reaches the "out" pointer, you've overflowed the cyclic buffer!
599966
Should be OK as long as the new RAM is of the same type as the 512.....meaning if your 512 RAM is unbuffered, you need same unbuffered 1gig...or if it is Registered then the 1 gig has to be Registered also. You can't mix different types or the computer won't boot.
683813
Usually if you take the RAM out of the computer, there is a sticker on it that will list the specs of the RAM.\n\nIf you are not comfortable opening the case, you have a program called "MSINFO" on most computers.  Go to C:&#92;Windows&#92;msapps&#92;msinfo" and run the MSINFO program.  This will give you many stats about your computer, including the RAM speed and type.
898480
Makes no difference.\n\nThe only thing it affects is the price as 2*1gb would cost more.
944330
there are two types of RAMs .\none is static ram and the other is dynamic ram.\nsdram means it is a dynamic ram.\n64 mb tells us that it has a total maximum capacity of 64 megabytes (mb). and 133mHz is the speed of the ram.\nthe maximum speed at which the ram can operate.