PDA

View Full Version : Epox board not seeing all my ram??

Werner
09-30-2005, 08:19 PM
Hi,

I just baught 2 extra 1Gig dimms for my Epox 9npaj SLi mother board. I had 2 gig of memory installed allready. When I put the new memory modules in and rebooted the system, it picked up 3407872kb. All 4 dimms are exactly the same (Sumsung 1 Gig pc3200). My first thought was that one of the sticks were bad, but after trying all the sticks in all the slots, one by one they all worked well.

Has anyone ever had this problem before. I emailed the Epox support guys, but no response yet.

please help if you can.

thanks.
lots
09-30-2005, 08:52 PM
With 4GB in the system, BIOS will automatically allocate a pretty sizable chunk of RAM to PCI/PCI Express functions. Not sure if this is the case here, as I've never had more than 2GB before (though aiming for 6 in the next few months). But this could be a possible cause to the disappearance of your ram

Out of curiosity, is windows reading 4GB?
Werner
09-30-2005, 09:32 PM
hmmm, I did not know that.

It's seams like allot tho.
When I take one dimm out it reads the memory as 3145728kb ram. When I take out two dimms it reads 2097152k. This seams right to me.

I just can see how adding dimm 4 could change the reading to 3407872kb.

Windows reads it as 3407340kb. This is just strange.

please help...this is is driving me nuts.
lots
09-30-2005, 10:00 PM
Well the ram that is sucked up by bios is generally around 1.5GB. I'm not really sure at the moment I'd have to go dig up the info. But maybe someone can answer

(real reason for shot post: going home, work is over :))
Remedy
10-01-2005, 01:19 AM
If you're using 32bit version of Windows (XP Home/Pro). You're bound to run into this limitation. It has more to do with Physical Address Extentsion (PAE). With PAE, you can get around this. But, the OS is still lmited to 4GB. You're supposed to lose 512MB of memory max and 256MB minimum. So, what you're seeing is normal.

Hence the 64-bit OS movement is in effect. :)

IIRC...
enygma
10-01-2005, 03:03 AM
On my K8WE, I have 8 512MB sticks in it. While the BIOS reads all 4GB, Windows reads 2.75GB. Even 64bit Windows only sees that much. On my DFI LanParty NF4 SLI-DR, there is 4 sticks of 1GB. The OS sees 3GB.
Werner
10-01-2005, 08:13 AM
thanks for the replies!

So in other words, this is normal and I don't have to worry about it. If I were to install 64bit Win XP, this would solve the problem?

regards
Werner
enygma
10-03-2005, 04:16 AM
Like was mentioned earlier, it is the BIOS addressing the memory to on board devices. WinXP 64bit won't have much of an effect on how much the OS sees.
CGTalk Moderation
10-03-2005, 04:16 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.