Results 1 to 14 of 14

Thread: Max RAM XP can handle...?

  1. #1
    Poiny Member
    Join Date
    Jan 2005
    Posts
    791
    Thanks
    1
    Thanked
    1 time in 1 post

    Question Max RAM XP can handle...?

    I have googled this but come up with so many different answers....

    What is the maximum amount of RAM windows XP can handle?

    I have a computer I'm upgrading, I have 4 sticks of 1GB, giving total of 4GB of RAM
    In windows it shows up as 3GB??

    This computer has some VERY demanding 3-D Modeling software to run.... is it going to use the 4GB?
    Is this just windows just showing it as 3 but actually it uses 4????

    I'm confused....
    Windows XP / 1.1MB Orange BB: E6600 Core 2 Duo Gigabyte GA 965P-DS3P EVGA 8800GTS Superclocked WD 250GB SATA2/300 2GB Corsair TwinX 6400 DDR2 Corsair HX 520 PSU 17in LG Flatron SONY DVD RW DRU-800A Akasa Zen case SB Audigy

  2. #2
    Registered+
    Join Date
    Aug 2007
    Posts
    54
    Thanks
    19
    Thanked
    0 times in 0 posts

    Re: Max RAM XP can handle...?

    ok im not one of the experts but i know that if you dont have a graphics card it uses some RAM to make a kinda fake one and if you have some real killer software that your using constantly i dont see why it wont share the RAM, merely my answer probobaly not accurate but its the best i got

  3. #3
    Senior Member usxhe190's Avatar
    Join Date
    Sep 2007
    Posts
    1,688
    Thanks
    149
    Thanked
    82 times in 63 posts

    Re: Max RAM XP can handle...?

    max 32bit windows can take is 4gb ram - that includes all your other ram (e.g. GPU, etc)....

    therefore, you can only see 3gb of rams...effectively 1gb is used by xp or higher memory applications

    if you want to go over 4gb ram, you need 64bit OS

  4. #4
    Flat cap, Whippets, Cave. Clunk's Avatar
    Join Date
    Jan 2006
    Posts
    11,056
    Thanks
    360
    Thanked
    725 times in 459 posts

    Re: Max RAM XP can handle...?

    Have a quick search on here, this comes up almost every day
    Quote Originally Posted by Blitzen View Post
    stupid betond belief.
    You owe it to yourself to click here really.

  5. #5
    Senior Member
    Join Date
    Jul 2007
    Posts
    524
    Thanks
    79
    Thanked
    67 times in 47 posts

    Re: Max RAM XP can handle...?

    This question really does come up at least once every day, but given the confusing nature of the subject, that is understandable.

    Most versions of XP are 32 bit. This means that your operating system can only 'see' 2^32 addresses. Hence the most a 32 bit operating system can address is 4Gb.

    However, your operating system needs to be able to talk to more than just the warehouse (ram), it has to also be able to talk with the main office, accounts, human resources, customer management, etc (ie, your graphics card, the hard drive, the sound card, USB ports, etc). As all these are essential for the computer to operate, it gives these other devices addresses first, with the ram only then getting what remains.

    poindextermatic, what you are seeing is perfectly normal, but still irritating. Unfortunately what windows is reporting is all that it can use.
    This means that, after your motherboard has been given addresses to use, you are left with normally only around 3.2Gb of addresses to give the ram. Even though the warehouse space is still all there, the system doesn't know how to find those parts without an address, meaning that they are effectively wasted.

  6. #6
    NOT Banned
    Join Date
    Jan 2007
    Posts
    5,905
    Thanks
    412
    Thanked
    278 times in 253 posts

    Re: Max RAM XP can handle...?

    Quote Originally Posted by Clunk View Post
    Have a quick search on here, this comes up almost every day
    yeah, from reading all the other posts it seems that 3.5gb is the max you may ever see, there should be a sticky on questions like this.

  7. #7
    Senior Member
    Join Date
    Jul 2007
    Posts
    524
    Thanks
    79
    Thanked
    67 times in 47 posts

    Re: Max RAM XP can handle...?

    The problem is, in my experience people never actually read the "FAQs - read this before posting threads"
    But it might be an idea anyway to come up with a definitive and well-written answer to such things, then question threads like this can be answered with a link

  8. #8
    Poiny Member
    Join Date
    Jan 2005
    Posts
    791
    Thanks
    1
    Thanked
    1 time in 1 post

    Re: Max RAM XP can handle...?

    Quote Originally Posted by Rosaline View Post
    The problem is, in my experience people never actually read the "FAQs - read this before posting threads"
    But it might be an idea anyway to come up with a definitive and well-written answer to such things, then question threads like this can be answered with a link
    The other problem, IMO, is ppl don't read the first post before posting themselves.... I said I've already searched for the answers I just wanted a definte answer to the question...

    So basically, yes you can have your four GB of RAM, but Microsoft won't let you eat it all?

    Yes?

    Windows XP / 1.1MB Orange BB: E6600 Core 2 Duo Gigabyte GA 965P-DS3P EVGA 8800GTS Superclocked WD 250GB SATA2/300 2GB Corsair TwinX 6400 DDR2 Corsair HX 520 PSU 17in LG Flatron SONY DVD RW DRU-800A Akasa Zen case SB Audigy

  9. #9
    NOT Banned
    Join Date
    Jan 2007
    Posts
    5,905
    Thanks
    412
    Thanked
    278 times in 253 posts

    Re: Max RAM XP can handle...?

    Quote Originally Posted by poindextermatic View Post
    The other problem, IMO, is ppl don't read the first post before posting themselves.... I said I've already searched for the answers I just wanted a definte answer to the question...

    So basically, yes you can have your four GB of RAM, but peripheral devices won't let you eat it all?

    Yes?

    fixed

  10. #10
    Senior Member
    Join Date
    Jul 2007
    Posts
    524
    Thanks
    79
    Thanked
    67 times in 47 posts

    Re: Max RAM XP can handle...?

    Moogle's fix is right

    You will get the same result if you were using Linux or Mac OS X, they all need to do the same thing

    It is possible to do other magics to allow the operating system to do a clever work-around to get access, but this often can break various programs and device drivers, so it is generally discouraged.

    Has anyone actually tried using the /PAE switch recently, using new hardware? I'm tempted to make a new thread to investigate this, as it would be interesting to see if the driver and performance issues are getting resolved and resulting in the practical use of /PAE.
    Last edited by Rosaline; 29-09-2007 at 12:57 PM.

  11. #11
    NOT Banned
    Join Date
    Jan 2007
    Posts
    5,905
    Thanks
    412
    Thanked
    278 times in 253 posts

    Re: Max RAM XP can handle...?

    only applies to 32 bit os's thats why vista ( for windows users ) or x64 is the way to go.

  12. #12
    Senior Member
    Join Date
    Jul 2007
    Posts
    524
    Thanks
    79
    Thanked
    67 times in 47 posts

    Re: Max RAM XP can handle...?

    ...unless certain programs you wish to run don't work under the 64bit versions of windows due to poorly written DRM ¬.¬

  13. #13
    Member
    Join Date
    Jun 2007
    Location
    Florida
    Posts
    113
    Thanks
    2
    Thanked
    8 times in 7 posts
    • WannaPiEcE's system
      • Motherboard:
      • BIOSTAR TA790GX 128M
      • CPU:
      • AMD Phenom II X4 940BE @ 3500 1.375v
      • Memory:
      • 2x2GB G.Skill DDR2-1066 @ CAS 5
      • Storage:
      • WD SATA 500GB
      • Graphics card(s):
      • 2xSapphire 4870 1GB - Crossfire
      • PSU:
      • Corsair TX750w
      • Case:
      • Antec 300 All fans populated
      • Operating System:
      • Win 7 Ultimate x64 & X86 dual-boot
      • Monitor(s):
      • 23" Acer HDMI 1920x1080

    Re: Max RAM XP can handle...?

    Depending on your components, the size of addressable memory can vary on a 32 bit operating system, for instance my XP shows 2.75gb while my Vista x64 shows 4093mb. I'm sure a quick google or forum search would reveal hundreds of topics easily answering your question.

  14. #14
    Flat cap, Whippets, Cave. Clunk's Avatar
    Join Date
    Jan 2006
    Posts
    11,056
    Thanks
    360
    Thanked
    725 times in 459 posts

    Re: Max RAM XP can handle...?

    Quote Originally Posted by poindextermatic View Post
    The other problem, IMO, is ppl don't read the first post before posting themselves.... I said I've already searched for the answers I just wanted a definte answer to the question...

    So basically, yes you can have your four GB of RAM, but Microsoft won't let you eat it all?

    Yes?

    I read it, and I said to search on here, and you will find the answers. Look for posts by Agent, he summed it up well
    Quote Originally Posted by Blitzen View Post
    stupid betond belief.
    You owe it to yourself to click here really.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. RAM Timings? What should it be?
    By Blitzen in forum PC Hardware and Components
    Replies: 16
    Last Post: 15-03-2007, 03:41 PM
  2. So You Want more RAM EH?!
    By T3hGr8£st in forum PC Hardware and Components
    Replies: 7
    Last Post: 07-02-2007, 12:21 PM
  3. RAM, RAM, RAM, and more RAM!
    By Tarinder in forum HEXUS News
    Replies: 37
    Last Post: 18-05-2006, 04:14 PM
  4. ABIT NF7-S (v2.0) and RAM trouble
    By blockers in forum Help! Quick Relief From Tech Headaches
    Replies: 14
    Last Post: 05-09-2005, 08:38 AM
  5. RAM Question
    By utdmleach in forum PC Hardware and Components
    Replies: 15
    Last Post: 18-07-2005, 07:53 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •