Results 1 to 7 of 7

Thread: 4GB useful in XP SP2 if only seeing 3GB?

  1. #1
    unapologetic apologist fuddam's Avatar
    Join Date
    Nov 2005
    Location
    UK
    Posts
    1,951
    Thanks
    359
    Thanked
    275 times in 146 posts

    Question 4GB useful in XP SP2 if only seeing 3GB?

    got extra 2GB today, and naturally XP sees less. Is 4 x 1GB.

    Heard of people seeing / using 3.5GB of physical memory. Mine is PAE enabled. Sees 2.95GB, and FWIW my vid card is only 256MB.

    wondering if it's worth keep the 4th stick in (vs selling / donating to friend).

    dual channel memory, btw. Not going to upgrade this machine to vista.

    TIA
    One can never stop saying Thank You

  2. #2
    Anthropomorphic Personification shaithis's Avatar
    Join Date
    Apr 2004
    Location
    The Last Aerie
    Posts
    10,838
    Thanks
    645
    Thanked
    871 times in 735 posts
    • shaithis's system
      • Motherboard:
      • Asus P8Z77 WS
      • CPU:
      • i7 3770k @ 4.5GHz
      • Memory:
      • 32GB HyperX 1866
      • Storage:
      • Lots!
      • Graphics card(s):
      • Sapphire Fury X
      • PSU:
      • Corsair HX850
      • Case:
      • Corsair 600T (White)
      • Operating System:
      • Windows 10 x64
      • Monitor(s):
      • 2 x Dell 3007
      • Internet:
      • Zen 80Mb Fibre

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    You need to re-map the memory with a BIOS setting to see more, how much more though is highly dependant on certain factors.

    I had a play with 4GB on a 32Bit Windows XP machine for the very first time over the xmas period (upgrading my mums PC with an old Asus P5W DH w/ E4300 and bought a 4GB (2x2GB) Corsair memory kit to throw in)......what happened was irritating...


    With the remapping turned off the BIOS reported 4096MB, Windows would only see 3GB.

    With the remapping turned on the BIOS and Windows reported 3.25GB

    The issue was, when the mapping was turned on (the correct setting for a 32Bit OS!) the system was unstable once you started using ~2.5GB of the RAM, with the option off only 3GB was usable but I could use it all heavily without issues.


    Didn't do too much messing around as I wasn't going to get worked-up over 256MB of RAM
    Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
    HTPC: AsRock Z77 Pro 4 / 3770K@4.2GHz / 24GB / GTX 1080 / SST-LC20 / Antec TP-550 / Hisense 65k5510 4K TV / HTC Vive / 2 x 240GB SSD + 12TB HDD Space / Race Seat / Logitech G29 / Win 10 Pro
    HTPC2: Asus AM1I-A / 5150 / 4GB / Corsair Force 3 240GB / Silverstone SST-ML05B + ST30SF / Samsung UE60H6200 TV / Windows 10 Pro
    Spare/Loaner: Gigabyte EX58-UD5 / i950 / 12GB / HD7870 / Corsair 300R / Silverpower 700W modular
    NAS 1: HP N40L / 12GB ECC RAM / 2 x 3TB Arrays || NAS 2: Dell PowerEdge T110 II / 24GB ECC RAM / 2 x 3TB Hybrid arrays || Network:Buffalo WZR-1166DHP w/DD-WRT + HP ProCurve 1800-24G
    Laptop: Lenovo Flex 2 / 12GB RAM / 240GB Corsair Force 3 Printer: HP CP1515n || Phone: HTC One U11 || Other: Samsung Galaxy Tab 4 Pro 10.1 CM12.1 / Playstation 4 + G29 + 2TB Hybrid drive

  3. #3
    Bows out! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Hopefully somewhere less backstabby
    Posts
    28,789
    Thanks
    3,203
    Thanked
    4,456 times in 3,442 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    I only went with 4gb since my system was more stable with 2x2gb than 4 sticks of RAM.

  4. #4
    unapologetic apologist fuddam's Avatar
    Join Date
    Nov 2005
    Location
    UK
    Posts
    1,951
    Thanks
    359
    Thanked
    275 times in 146 posts

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    my bios sees the 4 sticks without alteration.

    how would I remap? Machine is not acting too stable at the mo.......

    btw, all ram same brand, same type, same cas etc, tho new set is faster than the older, but i know they should all operate at the old speed.
    One can never stop saying Thank You

  5. #5
    Folding Flunkie Webby's Avatar
    Join Date
    Sep 2007
    Location
    Wiltshire
    Posts
    2,323
    Thanks
    12
    Thanked
    245 times in 229 posts
    • Webby's system
      • Motherboard:
      • Gigabyte G33M-DS2R, Swiftech MCW30 Northbridge Cooler
      • CPU:
      • Intel Core 2 Duo E6550 @ 3.5GHz, Cooling D-Tek Fuzion V2
      • Memory:
      • 2GB OCZ Flex DDR2 PC2-9200 5-5-5-15 @ 1000MHz 4-4-4-12
      • Storage:
      • 2x 250GB WD SataII
      • Graphics card(s):
      • Sapphire HD4870 512MB, Cooling Swiftech MCW60
      • PSU:
      • Corsair HX520w
      • Case:
      • Silverstone Tremjin TJ06 - Modded for Water Cooling Goodness
      • Operating System:
      • Windows XP Pro SP3
      • Monitor(s):
      • 22" Widescreen Cibox C2201 (with DVI input)
      • Internet:
      • 8Mb/s ADSL

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    You may need a touch more NB voltage to stabilise the whole thing

  6. #6
    unapologetic apologist fuddam's Avatar
    Join Date
    Nov 2005
    Location
    UK
    Posts
    1,951
    Thanks
    359
    Thanked
    275 times in 146 posts

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    remapping of NB turned on, only sees 2GB in windows, though Asus's Pc Probe reports all 4 banks, with a gig each....

    is more stable, but current situ is kinda pointless

    haven't yet tweaked voltages manually.
    One can never stop saying Thank You

  7. #7
    Vive le pants! directhex's Avatar
    Join Date
    Jul 2003
    Location
    /dev/urandom
    Posts
    17,074
    Thanks
    228
    Thanked
    1,027 times in 678 posts
    • directhex's system
      • Motherboard:
      • MSI X99A Gaming 7
      • CPU:
      • Intel Core i7 5280k
      • Memory:
      • 32GiB ADATA DDR4
      • Storage:
      • Corsair Neutron XT 960GB
      • Graphics card(s):
      • MSI GTX 980 Gaming 4G Twin Frozr 5
      • PSU:
      • Corsair AX860i
      • Case:
      • NZXT H440
      • Operating System:
      • Ubuntu 17.10, Windows 10
      • Monitor(s):
      • Dell U2713HM
      • Internet:
      • FIOS

    Re: 4GB useful in XP SP2 if only seeing 3GB?

    Wow, running a 32-bit OS with >32 bits to address sounds awesome

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Windows - 32-bit vs 64-bit
    By Paul Adams in forum Software
    Replies: 11
    Last Post: 30-03-2011, 02:54 PM
  2. 4gb install but only see 3gb in welcome center!!
    By sadonhonghun in forum Help! Quick Relief From Tech Headaches
    Replies: 8
    Last Post: 25-03-2008, 04:22 PM
  3. Another 4gb Vista 32 question
    By edwar368 in forum Corsair.care@HEXUS
    Replies: 5
    Last Post: 09-12-2007, 02:13 AM
  4. Strange. 3gb of ram of 4gb?
    By DecomposingStar in forum PC Hardware and Components
    Replies: 20
    Last Post: 03-11-2007, 09:52 AM
  5. SP2 help - Hangs on Boot
    By Devilbod in forum Software
    Replies: 17
    Last Post: 24-01-2007, 02:35 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
  •