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post #31 of 58
Thread Starter 
Quote:
Originally Posted by aleiro View Post
the OCed ram could be part of the problem. And its great you can do math but that doesnt change the fact that is is impossible for a 32 bit system to address 4gb of memory. I know in your little heart you want to think it does but i doesnt. And never will. Like i said just up the voltage on the cpu and be done with it.
Where did I say a 32bit OS (not counting server 2003 because thats a different story) will use all my 4GB RAM? I said it can only use 3.5GB because of my 512MB video card. Its pretty clear you don't read any other posts in this thread besides your own. Ever so helpfull you been, oh and about my OCed RAM being the problem, I am not even going to answer that because I already did, figures you didn't read that either. How about you go to some Microsoft links and read up on XP x86 and 4GB RAM? Just do it and be done with it already. Yeah, I know that sounds familiar.. Anyway theres other users here that are contributing to the thread. Thanks for the 10% of help.

@BLKKROW Nice to know its not just the sake of using 64 bit thats causing it, rather it being something else. You get stop errors when unstable in Orthos/Prime95 and the vcore needed is the same in x64 as in x86? (if you have used x86 before x64)
     
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post #32 of 58
You are the one with the problem not me, my comp runs fine. You have already been told by three people how to solve your problem. Lastly, it is obvious that you dont have a clue how memory addressing works, so how about you go read up on it.
    
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post #33 of 58
Quote:
Originally Posted by GigaByte View Post
Where did I say a 32bit OS (not counting server 2003 because thats a different story) will use all my 4GB RAM? I said it can only use 3.5GB because of my 512MB video card. Its pretty clear you don't read any other posts in this thread besides your own. Ever so helpfull you been, oh and about my OCed RAM being the problem, I am not even going to answer that because I already did, figures you didn't read that either. How about you go to some Microsoft links and read up on XP x86 and 4GB RAM? Just do it and be done with it already. Yeah, I know that sounds familiar.. Anyway theres other users here that are contributing to the thread. Thanks for the 10% of help.

@BLKKROW Nice to know its not just the sake of using 64 bit thats causing it, rather it being something else. You get stop errors when unstable in Orthos/Prime95 and the vcore needed is the same in x64 as in x86? (if you have used x86 before x64)
Your video card has nothing to do with the amount of RAM an operating system can see.

I had 4GB of RAM on a 32bit xp/Vista, and it showed 3400MB of RAM......while using an HD 2900XT 1GB video card.

If his post was so problematic, instead of spamming your own thread, ignore it or send him a PM. Some can attest to the PMs I send them for crapping on my threads!
    
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post #34 of 58
Have you considered going back to stock clocks and testing from there? Load CMOS defaults and start over... you probably screwed a setting past oblivion, because from what I am seeing.... you either are not telling everything correctly, or you have faulty hardware somewhere in the mix. Regardless, I would go back to defaults and see if you still BSOD
    
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post #35 of 58
Thread Starter 
I have done that but iam going to do it again tonight in 50Mhz speed increases over the 100Mhz increases I did last time. Stock is fine both OS and up to 3Ghz with 1.200v (stock for my CPU it has low VID). Starting somewhere slightly past 3Ghz the difference starts kicking in, 1.264v for 3.2Ghz and x64 wants a small increase of 1.276v. As speed increases the gap between x86 and x64 gets larger and larger. I get the same reaction on the Pentium 4 630 setup with the gap peaking at .19v difference before it will just fail to boot reguardless of vcore. Temps on both systems are safe and well under thermal spec, I actually let them both heat up more during the test to see how it reacts to heat, the Pentium paniced when it's temp increased by 4c and bluescreened (wasn't even throttling) while my sig rig didn't respond at all to high temps. The most it did was throttle, but not BSOD caused by it.

My board is on it's latest F12 bios but I am going to try the older ones for the hell of it, although F9, F10 and F11 have a memory problem which causes false positive in memtest.
     
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post #36 of 58
Quote:
Originally Posted by XFreeRollerX View Post
Your video card has nothing to do with the amount of RAM an operating system can see.

I had 4GB of RAM on a 32bit xp/Vista, and it showed 3400MB of RAM......while using an HD 2900XT 1GB video card.

If his post was so problematic, instead of spamming your own thread, ignore it or send him a PM. Some can attest to the PMs I send them for crapping on my threads!
32 Bit windows reserves 512 MB for video card addressing but can be extended if your video memory goes beyond then it reserves more and more of the adressing scheme to match the maximum amount on the video card.

By default windows x86 will only recognize and use upto 3.5 gigs of ram (3.5GB + 512KB = 4GB) However, although it will show it, if you have a larger video card, your computer will SHOW how much ram you have (3.5 Max) but will only use 4 - video card for your system memory.

I picked this little tidbit of information up somewhere else in the forums, can't remember where though.
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post #37 of 58
How many times does it have to be said

VIDEO CARDS HAVE NOTHING TO DO WITH HOW MUCH RAM WINDOWS CAN USE!



Prove me wrong.

<chozart edit for font size... ouch, my eyes>
    
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post #38 of 58
Thread Starter 
Quote:
Originally Posted by
Detailed:
Due to an architectural decision made long ago, if you have 4GB of physical RAM installed, Windows is only able to report a portion of the physical 4GB of RAM (ranges from ~2.75GB to 3.5GB depending on the devices installed, motherboard's chipset & BIOS).

This behavior is due to "memory mapped IO reservations". Those reservations overlay the physical address space and mask out those physical addresses so that they cannot be used for working memory. This is independent of the OS running on the machine.

Significant chunks of address space below 4GB (the highest address accessible via 32-bit) get reserved for use by system hardware:

• BIOS – including ACPI and legacy video support

• PCI bus including bridges etc.

PCI Express support will reserve at least 256MB, up to 768MB depending on graphics card installed memory
http://blogs.msdn.com/hiltonl/archiv...m-problem.aspx

Now guys can we please stay on topic?
     
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post #39 of 58
Quote:
Originally Posted by GigaByte View Post
http://blogs.msdn.com/hiltonl/archiv...m-problem.aspx

Now guys can we please stay on topic?
I am perfectly aware of how memory addressing works. But it is cute how you omitted the most important part... that in the instruction set of windows it limits the amount of ram you can address. Meaning it is directly programed into the software. For compatability it will only address 3.25gb like i said before.
Oh and i was reading up on why a processor needs more voltage and to make a long story short when you enable the x86-64 superset on a processor it requires more voltage. Now im not gonna go into it but ive solved your problem. <chozart edit>
http://www.mbreview.com/em64t.php <- and em64t is the operating mode that is enabled ONLY IN A 64 BIT OS
    
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post #40 of 58
aleiro: you're incorrect. 32-Bit Windows XP can only address 4GB at the most (minus some stuff that's needed for overhead and such), but 64-bit Windows XP can address a whole lot more (128GB I believe).

yep, 128GB:
http://msdn.microsoft.com/en-us/library/aa366778.aspx
    
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