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W7 build [solved - move along :p]

post #1 of 7
Thread Starter 
Hi
As the title states, why is W7 (ctrl panel->system) telling me that only 3,75GB of my 4GB ram is useable?

The board supports 8GB (not the board in my sig) and its a fresh W7 64bit install?
Edited by newphase - 6/8/10 at 6:21am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 Asus Lappy GeForce GT520M 4096 
Hard DriveOptical DriveOSMonitor
500GB LG W7=64 ult + Slackware13.1_64 + MineOS HP w2207h 
KeyboardCaseMouse
logitech G11 Fugly, lol logitech mx518 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 Asus Lappy GeForce GT520M 4096 
Hard DriveOptical DriveOSMonitor
500GB LG W7=64 ult + Slackware13.1_64 + MineOS HP w2207h 
KeyboardCaseMouse
logitech G11 Fugly, lol logitech mx518 
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post #2 of 7
Does it have an onboard GPU?
Money dump
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CPUMotherboardGraphicsRAM
Intel i5 3570k 4.4Ghz @ 1.22v ASRock Z77 Pro4 Sapphire R9 Nano @ Fury X clocks Crucial Ballistix VLP 2x8GB 1600 @ 2133 
Hard DriveOptical DriveCoolingOS
Samsung 830 128GB SSD, Seagate 3TB, Samsung 1TB Sony DVD/Rw 24x Thermalright Ultra 120 Extreme + GT AP-14 Windows 10 Pro 64-bit 
MonitorKeyboardPowerCase
Samsung U24E590D UHD Saitek Eclipse II Seasonic Prime 850w Titanium Corsair Carbide Air 540 
MouseAudio
Steelseries Xai Asus Xonar D1 / M-Audio AV40 / Ultrasone HFI-650 
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Money dump
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570k 4.4Ghz @ 1.22v ASRock Z77 Pro4 Sapphire R9 Nano @ Fury X clocks Crucial Ballistix VLP 2x8GB 1600 @ 2133 
Hard DriveOptical DriveCoolingOS
Samsung 830 128GB SSD, Seagate 3TB, Samsung 1TB Sony DVD/Rw 24x Thermalright Ultra 120 Extreme + GT AP-14 Windows 10 Pro 64-bit 
MonitorKeyboardPowerCase
Samsung U24E590D UHD Saitek Eclipse II Seasonic Prime 850w Titanium Corsair Carbide Air 540 
MouseAudio
Steelseries Xai Asus Xonar D1 / M-Audio AV40 / Ultrasone HFI-650 
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post #3 of 7
If it's 32 bit Windows, that's what's responsible.

32 bit pointers can only address 4 Gbytes of RAM, though there is a configuration option called PAE that can treat RAM as "pages" in certain versions of Windows - it's not really a good solution.

In most versions of 32bit Windows, there are further limitations associated with Windows conventions...for example, applications can only use 2Gbytes each under standard compilation, because Windows reserves the high bit for it's use in all pointers, dividing the max pointer quantity by 2.

One can compile either with a memory manager or a switch which raises this limit, but it's of limited utility.

Move to a 64 bit OS for best use of RAM beyond 4Gbytes.
post #4 of 7
Thread Starter 
doh! i forgot to turn that off.

Thanks - sorry for being a spaz!

+r
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 Asus Lappy GeForce GT520M 4096 
Hard DriveOptical DriveOSMonitor
500GB LG W7=64 ult + Slackware13.1_64 + MineOS HP w2207h 
KeyboardCaseMouse
logitech G11 Fugly, lol logitech mx518 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 Asus Lappy GeForce GT520M 4096 
Hard DriveOptical DriveOSMonitor
500GB LG W7=64 ult + Slackware13.1_64 + MineOS HP w2207h 
KeyboardCaseMouse
logitech G11 Fugly, lol logitech mx518 
  hide details  
Reply
post #5 of 7
Quote:
Originally Posted by JVene View Post
If it's 32 bit Windows, that's what's responsible.

32 bit pointers can only address 4 Gbytes of RAM, though there is a configuration option called PAE that can treat RAM as "pages" in certain versions of Windows - it's not really a good solution.

In most versions of 32bit Windows, there are further limitations associated with Windows conventions...for example, applications can only use 2Gbytes each under standard compilation, because Windows reserves the high bit for it's use in all pointers, dividing the max pointer quantity by 2.

One can compile either with a memory manager or a switch which raises this limit, but it's of limited utility.

Move to a 64 bit OS for best use of RAM beyond 4Gbytes.
He said in the OP that it was a fresh install of Windows 7 64-bit.
post #6 of 7
Ah, sorry, missed that somehow
post #7 of 7
Quote:
Originally Posted by newphase View Post
doh! i forgot to turn that off.

Thanks - sorry for being a spaz!

+r
Haha at least it was something simple.
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