4Gb RAM issue.

csmager

csmager

csmager

Soldato
Joined
30 Dec 2003
Posts
5,770
Location
London
Just put another 2Gb into my 2003 x64 server box, bringing the total to 4Gb.

Powered up, to find only 3Gb (3072Mb) reported. Did a bit of googling, and it came up with the suggestion of enabling the Memory Remap feature. So I did this.

Now it reports (in windows AND the BIOS) only 3.5Gb (3584Mb). Anyone got any ideas?!

Motherboard is Asus P5B-E Plus, if that's any use.
 
that is very strange isnt it, the whole reason people go for x64 OS's is so they can have more then 3.5gb of ram. i wonder what the issue is,

In the bios does it say just 3.5gb? - because if it does, makes me feel its the bios not behaving, and the OS is just going on what the bios is saying.

Give that beta a try and see if it helps?
 
It's the BIOS that says 3584Mb (and consequently Windows too). Memory remapping is supposed to fix it, but all that did was add another 512Mb (from 3072Mb).

Just tried the latest beta, and still the same issue. Googling came up with one person with the same issue on a similar board (P5B Deluxe, iirc), and it doesn't look like it was solved.
 
dirtydog said:
So you have enabled PAE and it doesn't work?
Click to expand...
It's my understanding that PAE is an OS enabled setting that's for >4Gb addressing on 32-bit systems.

My issue is the BIOS won't even detect the full amount.
 
lsg1r said:
wasnt there an issue with some older motherboards having issues reading 3.5+GB due to the chipset or something.
Click to expand...
It's 965, so it's not exactly old. Anyone else with the 965 that actually works with 4Gb? DS3, P5B etc?
 
All i can suggest thinking about it is update bios, try a 64bit linux boot cd, check every option in the bios, and swap the memory modules around into different slots.
Past that, not a clue tbh.

Im just hoping i dont get this problem when i upgrade in a few weeks. :confused:.
 
Have you checked the "Qualified Vendors Lists" in the manual - you'll see that the four modules configuration is not supported for all memory modules (see column C). I have no clue why. Maybe you picked the wrong kind of memory.
 
i take it you have 4x 1gb ram? perhaps it may be a dodgy ram chip? mis reading. but tbh, i doubt that it was that. maybe the motherboard just cant take 4gb in 4 slots? - have you trouble checked the other 2 new ram is ok, as in u have taken out the old stuff, just to double check?
 
are all 4 sticks the same?

is the bios seeing it as dual channel mode or single channel mode?

try reseting the bios then put 1 stick in as a time till u have all 4 in...

EDITED: i've just found out if u set the speed at 533mhz then it should see all 4gb
 
Last edited:
gareth170 said:
are all 4 sticks the same?
Click to expand...
Yep, OCZ PC2-6400 CS4 stuff from OcUK. It's not on the Asus QVL (Qualified Vendor List) though - which is literally the only thing I can think of as being the problem at the moment!
is the bios seeing it as dual channel mode or single channel mode?
Click to expand...
PC2-6400 Dual Channel Interleaved. Everest reports each DIMM socket as having an OCZ 1024Mb Module in.
i've just found out if u set the speed at 533mhz then it should see all 4gb
Click to expand...
Tried that, no change. Put it back to Auto.
 
csmager said:
Yep, OCZ PC2-6400 CS4 stuff from OcUK. It's not on the Asus QVL (Qualified Vendor List) though - which is literally the only thing I can think of as being the problem at the moment!
Click to expand...

to be honest i can't see its being because its not on the QVL.. because i have 2 different brands of ram in my system (see below) and my brands isn't on the QAL but it still works perfectly..

DIMM1: Power Quotient (1 GB DDR2-800 DDR2 SDRAM)
DIMM2: 1 GB DDR2-800 DDR2 SDRAM
DIMM3: Power Quotient (1 GB DDR2-800 DDR2 SDRAM)
DIMM4: 1 GB DDR2-800 DDR2 SDRAM

System Memory 4096 MB (DDR2-800 DDR2 SDRAM)
 
You must log in or register to reply here.
Back
Top Bottom