Vista 32bit memory limitation

panais

Power User
I have on my computer 4096MB of ram (4 dimms)
Windows vista ultimate 32bit from te default reads 3582MB.
Now... after i install sp1 windows reads 4GB.
I wonder if this is reall or just a virtual.
 

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    Samsung LE40A656F1 1080p 100Hz LCD HD TV 50,000:1
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    1366x768 in Desktop,1920x1080p in gaming and video
    Hard Drives
    C:\WD VelociRaptor 150 GB,10,000 RPM
    D:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 E:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 No Raid.Copy Paste Is The Safest Way.
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    F:\Sony high speed sata Dvd Rewriter
    KINGSTON HYPER X FAN
    +Cordless Rumblepad 2
Hi Panais,

It's real. It was a bug in the 32 bit version of Vista where it would not always see anything over 3GB. The SP1 fixed the problem.

Shawn
 

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    Integrated Digital Audio (S/PDIF)
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    2 x Samsung Odyssey G7 27"
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    512 GB M.2 SSD
So that means now my os end programs benefit and use all my 4096 ram?
 

My Computer

System One

  • Manufacturer/Model
    Custom Built by me.
    CPU
    Intel Core 2 Quad Q6600
    Motherboard
    Gigabyte GA-X38-DS4
    Memory
    KINGSTON HYPERX DDR2 4GB (2X2GB) PC6400 800MHZ DUAL CHANNEL KIT
    Graphics Card(s)
    SAPPHIRE RADEON HD4890 OC 1GB GDDR5
    Sound Card
    2/4/5.1/7.1-channel Realtek High Definition
    Monitor(s) Displays
    Samsung LE40A656F1 1080p 100Hz LCD HD TV 50,000:1
    Screen Resolution
    1366x768 in Desktop,1920x1080p in gaming and video
    Hard Drives
    C:\WD VelociRaptor 150 GB,10,000 RPM
    D:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 E:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 No Raid.Copy Paste Is The Safest Way.
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    Seasonic 700W 80plus
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    A-Case Twin Engine BB
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    3 thermaltake smart case fan II + 1 arctic cooling fan
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    Wireless Logitech LX710
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    Wirelles Logitech Laser Mouse MX620
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    ADSL 4000plus
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    F:\Sony high speed sata Dvd Rewriter
    KINGSTON HYPER X FAN
    +Cordless Rumblepad 2
Yep, it sure will.
 

My Computers

System One System Two

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    Windows 10 Pro 64-bit
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    Custom
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G7 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
  • Operating System
    Windows 10 Pro
    Manufacturer/Model
    HP Envy Y0F94AV
    CPU
    i7-7500U @ 2.70 GHz
    Memory
    16 GB DDR4-2133
    Graphics card(s)
    NVIDIA GeForce 940MX
    Sound Card
    Conexant ISST Audio
    Monitor(s) Displays
    17.3" UHD IPS touch
    Screen Resolution
    3480 x 2160
    Hard Drives
    512 GB M.2 SSD
This is perfect!!
 

My Computer

System One

  • Manufacturer/Model
    Custom Built by me.
    CPU
    Intel Core 2 Quad Q6600
    Motherboard
    Gigabyte GA-X38-DS4
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    KINGSTON HYPERX DDR2 4GB (2X2GB) PC6400 800MHZ DUAL CHANNEL KIT
    Graphics Card(s)
    SAPPHIRE RADEON HD4890 OC 1GB GDDR5
    Sound Card
    2/4/5.1/7.1-channel Realtek High Definition
    Monitor(s) Displays
    Samsung LE40A656F1 1080p 100Hz LCD HD TV 50,000:1
    Screen Resolution
    1366x768 in Desktop,1920x1080p in gaming and video
    Hard Drives
    C:\WD VelociRaptor 150 GB,10,000 RPM
    D:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 E:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 No Raid.Copy Paste Is The Safest Way.
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    3 thermaltake smart case fan II + 1 arctic cooling fan
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    ADSL 4000plus
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    F:\Sony high speed sata Dvd Rewriter
    KINGSTON HYPER X FAN
    +Cordless Rumblepad 2
In 32 bit Windows operating systems, the total addressable space available is 4GB. If you install a total of 4GB worth of RAM, the system will detect/use/display less than 4GB of total memory because of address space allocation for other critical functions, such as:

- System BIOS (including motherboard, add-on cards, etc..)
- Motherboards resources
- Memory mapped I/O
- Configuration for AGP/PCI-Ex/PCI
- Other memory allocations for PCI devices

Different onboard devices and different add-on cards (devices) will result of different total memory size. e.g. more PCI cards installed will require more memory resources, resulting of less memory free for other uses.

This limitation applies to most chipsets & Windows XP/Vista 32-bit version operating systems. Again, this is a limitation of the Operating System not having enough address space to allocate to the system *and* the RAM. Not allocating address space to devices renders them inoperable. Not allocating addresses to RAM simply results in the unaddressed section not being used in an otherwise fully functional computer. Therefore the OS designers assign RAM last.

We can have long debates about mathematical fundamentals and discussions about why the original Windows designers couldn't allocate the full theoretical max of 36 bits of address space so that users today would be able to use more resource. But at the end of the day, the designers and engineers 'Didn't Do That Then'. So we 'Can't Do This Now'.


If you install a Windows operating system, and if more than 3GB memory is required for your system, then the below conditions must be met:

1. A memory controller which supports memory swap functionality is used. The latest chipsets like Intel 975X, 955X, Nvidia NF4 SLI Intel Edition, Nvidia NF4 SLI X16, AMD K8 and newer architectures can support the memory swap function.

2. Installation of Windows XP Pro X64 Ed. (64-bit), Windows Vista 64, or other OS which can provide more than 4GB worth of address space.



Note: According to the latest Change Log published by Microsoft, Windows Vista 32bit SP1 will display the installed amount of RAM. This is a display change only.
 

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32Bit has a TOTAL hardware memory address allocation space of 4GB when not running in PAE mode (no, don't ask...1. it won't work on "home" versions of Windows. 2. It's not a nice trade off.).

You have to allocate for devices which require address spaces based on what the ask for; USB controllers, audio cards, USB devices (external storage and the lot), and Video Cards, and THEN what is left over goes to RAM.

Vista SP1 have a "fix" that lies to you and tells you that Windows Vista Recognizes all 4GB on your system. It won't tell you how much you're actually able to address unless you look deeper under the covers (task manager and what not).
 

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    EVGA 122-CK-NF67-A1 680i
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    2048 x 1152
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    Seasonic 600W M12
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    CM Centurion 5
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    air
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Emmm....
I need a simple answer for a simple question...
With sp1 installed my os and programs will benefit and use all my 4096 ram?

Thanks for ur response.
 

My Computer

System One

  • Manufacturer/Model
    Custom Built by me.
    CPU
    Intel Core 2 Quad Q6600
    Motherboard
    Gigabyte GA-X38-DS4
    Memory
    KINGSTON HYPERX DDR2 4GB (2X2GB) PC6400 800MHZ DUAL CHANNEL KIT
    Graphics Card(s)
    SAPPHIRE RADEON HD4890 OC 1GB GDDR5
    Sound Card
    2/4/5.1/7.1-channel Realtek High Definition
    Monitor(s) Displays
    Samsung LE40A656F1 1080p 100Hz LCD HD TV 50,000:1
    Screen Resolution
    1366x768 in Desktop,1920x1080p in gaming and video
    Hard Drives
    C:\WD VelociRaptor 150 GB,10,000 RPM
    D:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 E:\WESTERN DIGITAL WD15EADS 1.5TB CAVIAR GREEN SATA2 No Raid.Copy Paste Is The Safest Way.
    PSU
    Seasonic 700W 80plus
    Case
    A-Case Twin Engine BB
    Cooling
    3 thermaltake smart case fan II + 1 arctic cooling fan
    Keyboard
    Wireless Logitech LX710
    Mouse
    Wirelles Logitech Laser Mouse MX620
    Internet Speed
    ADSL 4000plus
    Other Info
    F:\Sony high speed sata Dvd Rewriter
    KINGSTON HYPER X FAN
    +Cordless Rumblepad 2
Emmm....
I need a simple answer for a simple question...
With sp1 installed my os and programs will benefit and use all my 4096 ram?

Thanks for ur response.

The simple answer is no. Functionally, SP1 works the same as pre-SP1. 32-bit Vista will only be able to use and benefit from ~3Gb RAM (the exact number depends on a few factors). SP1 fixes the way it displays the actual amount of physical RAM installed, but the way it's used by the 32-bit OS hasn't changed.
Hope this helps.
Munkus
 

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Emmm....
I need a simple answer for a simple question...
With sp1 installed my os and programs will benefit and use all my 4096 ram?

Thanks for ur response.

Nope.:zip: :D
 

My Computer

System One

  • CPU
    E6850
    Motherboard
    EVGA 122-CK-NF67-A1 680i
    Memory
    4 x OCZ Platinum 1GB
    Graphics Card(s)
    ATI Radeon HD 5850 1GB
    Sound Card
    SB X-Fi X Audio
    Monitor(s) Displays
    Samsung 23" 5MS
    Screen Resolution
    2048 x 1152
    Hard Drives
    2 x Barracuda 7200.10 320GB RAID 0 / 1 x 500GB Maxtor
    PSU
    Seasonic 600W M12
    Case
    CM Centurion 5
    Cooling
    air
    Internet Speed
    100Mbps
I have on my computer 4096MB of ram (4 dimms)
Windows vista ultimate 32bit from te default reads 3582MB.
Now... after i install sp1 windows reads 4GB.
I wonder if this is reall or just a virtual.

Prior to Vista SP1, Vista displayed the total available system memory, which is determined by hardware in the BIOS, and how much is used by internal devices such as HDD & USB controllers, Display adapters, etc.

In Vista SP1, the total installed memory is now reported.
 

My Computer

System One

  • Manufacturer/Model
    Custom Build
    CPU
    AMD Phenom 9600 Quad
    Motherboard
    ASUS MB-M3A32-MVP Deluxe/WiFi
    Memory
    2 x A-Data 2GB DDR2-800
    Graphics Card(s)
    ASUS ATI Radeon HD 2400PRO
    Monitor(s) Displays
    SAHARA 21"
    Screen Resolution
    1600x1200
    Hard Drives
    2 x 80GB Seagate (I)
    2 x 120GB Seagate (I/S)
    2 x 200GB Seagate (I/S)
    2 x 250GB Seagate (I/S)
    PSU
    800W
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    Thermaltake Tai-Chi
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    Tai-Chi Water Cooler
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    Genius
    Mouse
    Logitech
    Internet Speed
    384kbps
    Other Info
    Currently dual booting between Vista x64 Ultimate Windows 7 BETA x64
I have on my computer 4096MB of ram (4 dimms)
Windows vista ultimate 32bit from te default reads 3582MB.
Now... after i install sp1 windows reads 4GB.
I wonder if this is reall or just a virtual.

Prior to Vista SP1, Vista displayed the total available system memory, which is determined by hardware in the BIOS, and how much is used by internal devices such as HDD & USB controllers, Display adapters, etc.

In Vista SP1, the total installed memory is now reported.

Question. Should the full 4 GB show up in all applications running in a SP1 system? I've got the RTM SP1 installed, and I have applications still reporting only 3.3 GB. Will the full public release of SP1 resolve that?
 

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System One

  • CPU
    Intel Q6600 Quad Core 2.4 Ghz
    Motherboard
    Dell 0TP406
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    4 X 1 GB DDR2 Kingston 800 Mhz
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    Nvidia 8800 GT 512 MB
    Monitor(s) Displays
    Dual Dell 22" Widescreen
    Screen Resolution
    3360x1050
    Hard Drives
    320 GB Internal Main
    500 GB USB External
    160 GB USB External
    2TB USB External
    Internet Speed
    DSL 3MB
32Bit has a TOTAL hardware memory address allocation space of 4GB when not running in PAE mode (no, don't ask...1. it won't work on "home" versions of Windows. 2. It's not a nice trade off.).

You have to allocate for devices which require address spaces based on what the ask for; USB controllers, audio cards, USB devices (external storage and the lot), and Video Cards, and THEN what is left over goes to RAM.

Vista SP1 have a "fix" that lies to you and tells you that Windows Vista Recognizes all 4GB on your system. It won't tell you how much you're actually able to address unless you look deeper under the covers (task manager and what not).
My understanding is that PAE will work on 32-bit Vista. But, you say no to "home" versions. Please clarify.
 

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Prior to Vista SP1, Vista displayed the total available system memory, which is determined by hardware in the BIOS, and how much is used by internal devices such as HDD & USB controllers, Display adapters, etc.

In Vista SP1, the total installed memory is now reported.

Question. Should the full 4 GB show up in all applications running in a SP1 system? I've got the RTM SP1 installed, and I have applications still reporting only 3.3 GB. Will the full public release of SP1 resolve that?


That just depends on which API call the application makes to determine the amount of memory to display. Either the available memory, or the total memory can be queried by an application.

And of course, it doesn't really matter, since a 32-bit application is strictly limited to 2GB RAM anyway, (whether it's being run on XP or Vista), regardless of how much is installed or available.
 

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System One

  • Manufacturer/Model
    Custom Build
    CPU
    AMD Phenom 9600 Quad
    Motherboard
    ASUS MB-M3A32-MVP Deluxe/WiFi
    Memory
    2 x A-Data 2GB DDR2-800
    Graphics Card(s)
    ASUS ATI Radeon HD 2400PRO
    Monitor(s) Displays
    SAHARA 21"
    Screen Resolution
    1600x1200
    Hard Drives
    2 x 80GB Seagate (I)
    2 x 120GB Seagate (I/S)
    2 x 200GB Seagate (I/S)
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    Thermaltake Tai-Chi
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    Tai-Chi Water Cooler
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    Genius
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    384kbps
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    Currently dual booting between Vista x64 Ultimate Windows 7 BETA x64
Question. Should the full 4 GB show up in all applications running in a SP1 system? I've got the RTM SP1 installed, and I have applications still reporting only 3.3 GB. Will the full public release of SP1 resolve that?


That just depends on which API call the application makes to determine the amount of memory to display. Either the available memory, or the total memory can be queried by an application.

And of course, it doesn't really matter, since a 32-bit application is strictly limited to 2GB RAM anyway, (whether it's being run on XP or Vista), regardless of how much is installed or available.
Right, but more memory, more applications running closer to optimally. I still am wondering about your "home" computer remark. That is what I am hoping to clarify.
 

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That just depends on which API call the application makes to determine the amount of memory to display. Either the available memory, or the total memory can be queried by an application.

And of course, it doesn't really matter, since a 32-bit application is strictly limited to 2GB RAM anyway, (whether it's being run on XP or Vista), regardless of how much is installed or available.
Right, but more memory, more applications running closer to optimally. I still am wondering about your "home" computer remark. That is what I am hoping to clarify.


I never mentioned PAE on "home" versions. That was bruce2.

But to clarify your question anyway, PAE (Physical Address Extensions) is not available on any consumer version of Windows. It is typically used on 32-Bit server operating systems (Such as Windows Server 2003) to allow the operating system (and enabled applications) to address more than 4GB of memory.

Because x64 can on the hardware level address more than 4GB of memory in excess of TeraBytes, PAE is not necessary on x64 versions of Windows.

So it remains - If you want more than 4GB, you either need to use a server OS that isn't really suited for home use, or switch to a 64-Bit OS, such as Vista x64.

I've been using Vista x64 Ultimate for just over a year now, and it's performance, compatibility and reliability is second to none. Just make sure you can get Vista x64 drivers for all your hardware...:geek:
 

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System One

  • Manufacturer/Model
    Custom Build
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    AMD Phenom 9600 Quad
    Motherboard
    ASUS MB-M3A32-MVP Deluxe/WiFi
    Memory
    2 x A-Data 2GB DDR2-800
    Graphics Card(s)
    ASUS ATI Radeon HD 2400PRO
    Monitor(s) Displays
    SAHARA 21"
    Screen Resolution
    1600x1200
    Hard Drives
    2 x 80GB Seagate (I)
    2 x 120GB Seagate (I/S)
    2 x 200GB Seagate (I/S)
    2 x 250GB Seagate (I/S)
    PSU
    800W
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    Thermaltake Tai-Chi
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    Tai-Chi Water Cooler
    Keyboard
    Genius
    Mouse
    Logitech
    Internet Speed
    384kbps
    Other Info
    Currently dual booting between Vista x64 Ultimate Windows 7 BETA x64
HaHa. Thanks much. Excuse my dumb for thinking you were replying to me. But, OK, this read seems to imply that PAE applies to Vista 32-bit. And, there are others that seem to imply the same.
 

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HaHa. Thanks much. Excuse my dumb for thinking you were replying to me. But, OK, this read seems to imply that PAE applies to Vista 32-bit. And, there are others that seem to imply the same.

That article is misleading. If you were to check on Microsoft's Vista website (or others detailing the memory limitations of Windows Vista), you'll notice that none of the 32-Bit versions of Vista support more than 4GB of memory. So the logical conclusion would be that they don't support PAE...
 

My Computer

System One

  • Manufacturer/Model
    Custom Build
    CPU
    AMD Phenom 9600 Quad
    Motherboard
    ASUS MB-M3A32-MVP Deluxe/WiFi
    Memory
    2 x A-Data 2GB DDR2-800
    Graphics Card(s)
    ASUS ATI Radeon HD 2400PRO
    Monitor(s) Displays
    SAHARA 21"
    Screen Resolution
    1600x1200
    Hard Drives
    2 x 80GB Seagate (I)
    2 x 120GB Seagate (I/S)
    2 x 200GB Seagate (I/S)
    2 x 250GB Seagate (I/S)
    PSU
    800W
    Case
    Thermaltake Tai-Chi
    Cooling
    Tai-Chi Water Cooler
    Keyboard
    Genius
    Mouse
    Logitech
    Internet Speed
    384kbps
    Other Info
    Currently dual booting between Vista x64 Ultimate Windows 7 BETA x64
HaHa. Thanks much. Excuse my dumb for thinking you were replying to me. But, OK, this read seems to imply that PAE applies to Vista 32-bit. And, there are others that seem to imply the same.

That article is misleading. If you were to check on Microsoft's Vista website (or others detailing the memory limitations of Windows Vista), you'll notice that none of the 32-Bit versions of Vista support more than 4GB of memory. So the logical conclusion would be that they don't support PAE...
I know what you mean. But, help. Here are some more:

Memory Management Registry Keys (Windows) and

/pae.

Why is there so much apparent confusion on this issue?
 

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