Disabling onboard video - Asus P5K board

  • Thread starter Thread starter Jim Breslauer
  • Start date Start date
J

Jim Breslauer

I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
 
Jim said:
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
Click to expand...

Is this P5K-VM ? There are a number of boards with a name
starting with P5K.

Look under "Northbridge Configuration" in the manual.

There is an "Internal Graphics Mode Select".

As for address space consumption, try page 8 of this document, for
an example.

http://dlsvr01.asus.com/pub/ASUS/mb/4GB_Rev1.pdf

Paul
 
Jim Breslauer said:
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)
Click to expand...

32-bit XP can only address 3 GB of RAM.
 
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
Click to expand...

Don't worry - you're not doing anything wrong. Windows XP uses use of all
4GB but it's not all available to the user with the 32-bit version of XP.
No matter what BIOS or boot.ini settings you change, the most you'll get
is somewhere between 3 and 3.5GB depending on the motherboard and system
devices.
 
Jim said:
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
Click to expand...


PCI and PCI Express devices such as USB controllers, IEEE1394, motherboard
resources, and the 8600GTS are mapped to address space below 0xFFFFFFFF.

One solution is to use 64-bit XP or Vista but that has gotyas as well.

http://support.microsoft.com/kb/929605/en-us

The article mentions 32-bit Vista but the same caveats apply to all 32-bit
versions of NT.
 
So to clarify:

Using a 32-bit version of XP or Vista it won't show 4 gigs even though
they are installed.
However, the system is still utilizing all 4 gigs.

Is that correct?
Click to expand...

Yes.
 
Michael said:
Don't worry - you're not doing anything wrong. Windows XP uses use of all
4GB but it's not all available to the user with the 32-bit version of XP.
No matter what BIOS or boot.ini settings you change, the most you'll get
is somewhere between 3 and 3.5GB depending on the motherboard and system
devices.
Click to expand...

So to clarify:

Using a 32-bit version of XP or Vista it won't show 4 gigs even though
they are installed.
However, the system is still utilizing all 4 gigs.

Is that correct?
 
So to clarify:

Using a 32-bit version of XP or Vista it won't show 4 gigs even though
they are installed.
However, the system is still utilizing all 4 gigs.

Is that correct?
Click to expand...

Umm, actually no.

You'll be able to use ~3GB of your RAM, the rest of the RAM is
unavailable to a 32-bit operating system (without PAE support)
 
Jim Breslauer said:
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
Click to expand...

Sorry, but it's not the onboard video. 32 bit OS can only see 4Gb, but lots
of adapters are mapped ono the top of the memory map. Some systems see a bit
less than that. You will need 64bit OS to do better, or a server 2003
installation.

Mike.
 
I've got 4GB of RAM in my P5K but WinXP shows only 3.25GB. I
assume that onboard video is using the difference, but I can't find a
setting in the BIOS setup that would let me disable it, & the manual
doesn't mention jumper settings that would do this. (FWIW, my video
card is a GeForce 8600 GTS.)

Has anyone else encountered this? TIA for any suggestions.
Click to expand...

I don't use XP, but in Win98 you can see the memory resources in
Device Manager by viewing the Properties for Computer. Any address
greater than C0000000 is above the 3GB boundary.

- Franc Zabkar
 
Sorry, but it's not the onboard video. 32 bit OS can only see 4Gb, but lots
of adapters are mapped ono the top of the memory map. Some systems see a bit
less than that. You will need 64bit OS to do better, or a server 2003
installation.

Mike.
Click to expand...

Am I missing something here? ASUS PBK has no onboard video that I'm aware of.

brian
 
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