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Fact: Sp1 supporting 4gb - Page 3

post #21 of 28
No - it was clarified that the update would make it display that you have 4GB installed.

But just like every other Windows - the max RAM used in 32 bit will be (most likely always until 4GB is standard) 3.25GB.
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post #22 of 28
Thread Starter 
Quote:
No - it was clarified that the update would make it display that you have 4GB installed.

But just like every other Windows - the max RAM used in 32 bit will be (most likely always until 4GB is standard) 3.25GB.
lol. didn't know that. but it feels like if i have 4gbs installed.
    
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post #23 of 28
Quote:
Originally Posted by Dominazn View Post
Probably cuz the only explanation is that.....its from Dell! Which way did he go...George!
I want what ever he having.
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post #24 of 28
Quote:
Originally Posted by startekee View Post
I just installed sp1 and now it shows that i have 4gb of ram and i can notice the difference in speed.
There is a fix in Service Pack 1 so that the My Computer Properties shows 4GB of RAM. However, only 3.2GB to 3.75GB of that RAM will ever be used in reality as your other devices with their own dedicated memory will take some of the 4GB addressable space. Any improvements that you are seeing are likely down to other API related fixes but they most certainly won't be from haveing access to more RAM.
post #25 of 28
Physical Address Extension. MS uses this with their 32-bit server products. Allows 32-bit OSes to see (and yes USE) more than 4GB... nothing is impossible.

If I'm correct in that SP1 entails the use of PAE, I am surprised. Almost dissappointed; I want 64-bit technology to prosper and seeing more than 4GB RAM is the main reason for people to use a x64 OS.
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post #26 of 28
M$ created this patch to make their lives easier it will now state u have 4gb installed that in itself will stop millions of phone calls from ppl who have 4gb in their rigs but only shows 3.2gb ....it must get tedious having to explain the x32 ram addressing limitation every time ...so they fixed it and now all those ppl who dont know about the x32 issue wont even query it cos it shows 4gb.......
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post #27 of 28
here ya go..........

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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post #28 of 28
Good, I'm wrong about PAE. That'd be stupid if they did that.

Well this was a quick find:

Quote:
This change occurs because Windows Vista with SP1 reports how much physical memory installed on your computer. All versions of Windows NT-based operating systems before Windows Vista Service SP1 report how much memory available to the operating system. This change in Windows Vista SP1 is a reporting change only.
You people that live on this site chit a brick when the source is left out so here ya go
http://support.microsoft.com/kb/946003/
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