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4 gigs of memory in windows

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February 17, 2006 5:05:47 PM

Has anyone had reliability issues with 4 GB of memory in Windows XP?

Some say yes others say no I'm just looking for stories.

More about : gigs memory windows

February 17, 2006 5:30:13 PM

I've built three systems with 4 gig in the last two months, not a single problem. One was ECC the others were regular ddr, all corsair and transcend. What kind of probs?
February 17, 2006 5:51:36 PM

The problems were the memory management got flakey when streaming large files into RAM from a microscope camera. Mostly for recording object motion where many large images were recorded over several seconds and streamed into memory. Systems with 4 GB were a bit flakey while reducing the system memory to 2 GB apparently fixed the problem. I was looking for a fundamental reason if windows just has problems managing the maximum amount of memory for a 32 bit system.
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February 17, 2006 6:07:49 PM

32-bit Windows may have problems with it, however Windows XP 64-bit edition can handle 64GB of RAM.
February 17, 2006 6:57:29 PM

Quote:
32-bit Windows may have problems with it, however Windows XP 64-bit edition can handle 64GB of RAM.


Just a little correction here. Yes XP 64 Can handle 64GB of Ram but that is NOT its upper limit. The Upper Practical Limit is 16TB (Tera Bytes) of Physical System Memory and the Upper theoretical Limit is 2^64 - 1/2 times the number of Pages of offsets (typically about 5% of total) Bytes of available System Memory which equals approximately 15.9QB (Quadrillion Bytes) of available address space
February 17, 2006 7:06:01 PM

Whatever. :) 
February 17, 2006 7:20:47 PM

Hey,

Ok so Im a geek. But then thats the intended target audience of this forum right? 8) Im one of those guys who insist on ten decimal point accuracy in everything lol
February 17, 2006 9:00:18 PM

In that case it should be noted that 32bit xp will support up to 64gig of physical ram also, per microsoft. They just don't allow it unless it's in datacenter edition.
February 17, 2006 9:27:57 PM

The isuse is likely a problem with the page file, which with that much ram could be turned off.
February 17, 2006 10:06:34 PM

How about for 32 Bit windows?
February 17, 2006 10:36:00 PM

Quote:
Has anyone had reliability issues with 4 GB of memory in Windows XP?

Some say yes others say no I'm just looking for stories.



The probem may have been that you need to add the /3GB switch to the boot.ini for your install(this is per app). Also, your mobo may have something to do with it. Did you try using SPD(auto-configure in the BIOS) for the RAM? The way DataCenter accesses more than 2GB is using the /PAE switch. Also did you turn off the pagefile. Windows gets confused. As far as X64, the limitation for memory size is the processor. Right now AMD has 48-bit addressing so it supports 2 to the 48th power bytes. Intel does I believe have full 64-bit addressing, but even 48-bit is WAYYYYYYYY beyond how much RAM you can add to a single system.
February 17, 2006 11:52:38 PM

oops, 32bit server not xp, sorry bout that.
February 18, 2006 12:10:15 AM

:)  No problem.
!