Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 24

Thread: Showing Usable RAM 2.75GB while installed is 4GB




  1. #11
    Join Date
    Sep 2009
    Location
    Australia
    Posts
    166

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    Maybe Win7 memory management is different to XP?

    Maybe that is the reason why newest motherboards with onboard graphics do have dedicated ram onboard (not pooled)?

    I am no expert thou...
    GA-FXA990-UD3v4
    AMD FX-8320
    Kingston 2x4GB 1866 HyperX
    Gigabyte R6850C-1GB
    1x WD Blue 1TB / 1x SSHD 1TB Seagate
    Win7x64


  2. #12
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    I'll try a 32bit Win 7 install later on to see. For now, I've imaged to Windows XP. With 1GB of video RAM I am seeing exactly 3GB of usable system RAM.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  3. #13
    Join Date
    Apr 2009
    Location
    Virginia
    Posts
    1,470

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    Yes I have 4GB and a 512MB graphics card. So I really have 4.5GB's of memory if you want to look at it that way. Your onboard graphics removes the memory after Windows sets the available physical memory to 3.25GB's So it's 3.25GB's-512MB for GPU = 2.75 available physical memory. I booted to my 32bit Windows 7 to verify this. Below is a photo. If you want to see avilable Installed physical memory, Total physical memory, available Physical memory, and total virtual memory. Look in Start/all programs/accessories/System tools/ system information

    By artdrivers at 2009-12-17
    UPDATE
    I added the memory compaired from 64bit and 32bit in Windows 7 in system information. This is for anyone interested in the difference.
    32bit:

    By artdrivers at 2009-12-17
    64bit:

    By artdrivers at 2009-12-17
    Last edited by artdrivers; 12-18-2009 at 07:04 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  4. #14
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    If that were true then Windows is actually penalizing someone for having an integrated GPU using system RAM. In that scenario, the RAM is being addressed twice, once as system RAM, which the BIOS then removes to allocate to the GPU and it's addressed again when the RAM is given back in the form of VRAM.

    What I'm saying is, the RAM allocated should never be assigned an address space as Physical RAM and should be removed before addressing takes place, seamlessly by the BIOS. In this case it should behave exactly like having a 512MB card.

    If this is indeed how the 4Gb address limit is working, it seems to me to be a pretty crappy system, treating 512MB of shared RAM as if it were 1024MB of descreet VRAM by actually removing 1GB of usable RAM.

    If this is indeed the case then I'd recommend the OP buy a stand alone graphics card, at which point he should see an extra 256-512MB usable system RAM.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  5. #15
    Join Date
    Apr 2009
    Location
    Virginia
    Posts
    1,470

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    I agree Psycho101 "Dido" He would be much better off with nearly any pcie graphics solution. His onboard memory and GPU memory speed are the same; 64bit. Most Graphics cards are 128bit or 256bit memory speed. His Windows Experience Index would go from 4.2 to 5.9 also. The larger GPU bandwidth and larger and faster GPU memory speed would be a large improvement as well.
    Last edited by artdrivers; 12-18-2009 at 08:07 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  6. #16
    Join Date
    Sep 2009
    Location
    Australia
    Posts
    166

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    Quote Originally Posted by Psycho101 View Post
    If that were true then Windows is actually penalizing ...


    that is why motherboard manufacturer lately separately integrate vram for onboard graphics.

    did I say that before? ;)
    GA-FXA990-UD3v4
    AMD FX-8320
    Kingston 2x4GB 1866 HyperX
    Gigabyte R6850C-1GB
    1x WD Blue 1TB / 1x SSHD 1TB Seagate
    Win7x64


  7. #17

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    A rather well illustrated blog on subject:
    Mark's Blog : Pushing the Limits of Windows: Physical Memory

  8. #18
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    Quote Originally Posted by PhenomII Dude View Post
    that is why motherboard manufacturer lately separately integrate vram for onboard graphics.

    did I say that before? ;)
    It is possible that some do this. However the main reason why we are seeing some boards with discrete RAM on integrated GPU's and some using system RAM is price driven. VRAM is an expensive product (at least GDDR3 and GDDR5 are any way) and "stealing" system RAM allows them to cut integrated graphics costs considerably. The trade off seems to be this "double subtracting" problem and also much slower speeds than discrete VRAM.

    For 2D this performance drop isn't noticable. I used a 630i board with 7100 integrated GPU running on 128MB (options were 32MB, 64MB, 128MB and 256MB) with little issue. It actually even managed 40 FPS in World of Warcraft at medium(ish) settings which I thought was pretty good for the spec.

    Maybe another thing that could help would be if the OP reduced the amount of RAM the GPU is assigned. Personally I see little point giving that GPU 512MB of RAM, it's pretty under powered as far as 3D is concerned. 256MB max would be fine, having first tested with 128MB to see if that amount will be sufficient. A decent game of Plants Vs Zombies will be about all you can expect from an integrated solution.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  9. #19
    Join Date
    Jan 2010
    Location
    los angeles, ca.
    Posts
    2

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    I experienced this same problem but didn't know I had it until I tried to upgrade to 6GB and Win 7.
    Hence, I found two possibles solution to this problem. If the first doesn't work, consider the second.

    Try this first:
    START > IN THE SEARCH AREA TYPE IN: MSCONFIG AND CLICK ENTER
    IN SYSTEM CONFIG SELLECT THE BOOT TAB AND CLICK "ADVANCED OPTIONS"
    ON THE RIGHT SIDE OF THAT WINDOW SHOULD BE A BOX LABELED MAXIMUM MEMORY
    REMOVE THE CHECK MARK IN THAT BOX AND THEN SELECT OK AND THEN APPLY AND MOST IMPORTANT OF ALL -
    RESTART YOUR COMPUTER IMMEDIATELY. I'VE SEEN THE SAME THREAD ALL OVER TRYING TO SOLVE MY PROBLEM BUT FAILED TO.
    THEN BY ACCIDENT, I SHUT OFF MY COMPUTER AND WHEN IT RETURNED THE PROBLEM WAS GONE.

    THE SECOND IS THAT MAKE SURE EACH OF YOUR RAM CHIPS ARE COMPATIBLE WITH EACH OTHER. BUT THIS PROBLEM IS PURELY SECONDARY THOUGH IT WAS NOTED BY A MS TECH.

  10. #20
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: Showing Usable RAM 2.75GB while installed is 4GB

    That's going to make zero difference if you fit 6GB into a PC with a 32bit OS. There's no way on earth, that without completely de-compiling, recoding and re-compiling the kernel that you'll get it to recognise more than 4GB - GPU VRAM as usable. You may get the System Properties page state "6GB of RAM" but you're not going to be able to use more than ~3.25-3.75GB.

    Beware of statements from people claiming to be an "MSVP" etc, Microsoft give those kinds of "Qualifications" out in packs of breakfast cereal.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

Page 2 of 3 FirstFirst 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 3 users browsing this thread. (0 members and 3 guests)

Posting Permissions

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