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Not showing 4GB in Vista X64

post #1 of 13
Thread Starter 
My partner has recently got a few cheap upgrades and running Vista X64 with 2x2GB DDR2 800 CAS 5 modules with a X2 4600 CPU. But Vista is only showing 3GB of ram. I'm confused....She has an Asrock mobo XLI eSata or something (can't remember the name of it). I think it's this one
http://www.asrock.com/mb/overview.as...M2XLI-eSATA2&s=

I'll had a few ideas of my own to what could be causing it but i won't see her til later to sort it out. Just need some feeedback.
 
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post #2 of 13
I read somewhere that in x64 there is a RAM hole where there is physical RAM, but it cannot be mapped or allocated. The hole is somewhere between 3-4GB. If your partner were to go with 6GB or 8GB your problem would most likely be solved.

Thawny
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by thawny View Post
I read somewhere that in x64 there is a RAM hole where there is physical RAM, but it cannot be mapped or allocated. The hole is somewhere between 3-4GB. If your friend were to go with 6GB or 8GB your problem would most likely be solved.

Thawny
Eh? I use 4GB no problem same as most ppl with Vista X64

But your right about memory mapping, i'm sure there's a Bios option that needs to altered for it to be recognised properly in the OS.
 
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post #4 of 13
Hey, Mhill, heard of google?

This took me 2 seconds: Duh

In brief:

If you are running 32-bit Windows, you must live with it. You will not ever see all 4GB of RAM you've paid for.

If you are running 64-bit Windows, you may have to live with it. Depending on your motherboard's chipset, your system may support memory remapping. If so, you will be able to use all 4GB of RAM.

Something to do with the motherboard chipset then mate. Look for Memory Remapping in the BIOS.
Edited by jNSK - 6/3/08 at 4:46am
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post #5 of 13
Quote:
Originally Posted by Mhill2029 View Post
Eh? I use 4GB no problem same as most ppl with Vista X64

But your right about memory mapping, i'm sure there's a Bios option that needs to altered for it to be recognised properly in the OS.
Yeah, as I have 32 bit I don't know.

I didn't mean in anyway that it was an exclusive phenomena, as clearly many people switch to x64 bit mainly for the use of 4GB. Just an idea
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by thawny View Post
Yeah, as I have 32 bit I don't know.

I didn't mean in anyway that it was an exclusive phenomena, as clearly many people switch to x64 bit mainly for the use of 4GB. Just an idea
Well, i basically confirmed it myself anyhow. Memory remapping as i thought which needs to be enabled in the Bios.
 
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post #7 of 13
Quote:
Originally Posted by jNSK View Post
Hey, Mhill, heard of google?

This took me 2 seconds: Duh
That was so very polite and friendly
    
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post #8 of 13
Quote:
Originally Posted by jNSK View Post
Hey, Mhill, heard of google?

This took me 2 seconds: Duh

In brief:

If you are running 32-bit Windows, you must live with it. You will not ever see all 4GB of RAM you've paid for.

If you are running 64-bit Windows, you may have to live with it. Depending on your motherboard's chipset, your system may support memory remapping. If so, you will be able to use all 4GB of RAM.

Something to do with the motherboard chipset then mate. Look for Memory Remapping in the BIOS.
When SP1 for vista 32 bit was released, you can see 4Gb in windows. Don't Duh People. It's very ignorant of you.
post #9 of 13
Turn on "Memory Remapping" in your BIOS good sir.

Helped me go from 3gb to 4gb on Vista Business 64bit

I have an Asus P5B Deluxe.
post #10 of 13
Quote:
Originally Posted by excoracer View Post
When SP1 for vista 32 bit was released, you can see 4Gb in windows. Don't Duh People. It's very ignorant of you.
Ok it allows you to see the ram (http://support.microsoft.com/kb/946003) but you can't actually use it so it's just pointless.
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