Only 3072 MB of memory usable on Win 7 64 bit. HELP

[LuigiVN]

Hi guys.

Today I noticed that my system is only using 3072mb of RAM, I have 4 GB in my system and they used to work pretty nice until now, before all 4 were usable, now Im missing 1. I thought this was because ram remap feature was diabled on the bios (BTW here's my board : Biostar G31 M7 TE). So I enabled it and rebooted my system. Turns out it's still the same... I tried also enabling the memory hole to 15-16 mb (the only setting appart from diables) same results. Can anyone help me please? I think this is decreasing my PC's performance...

edit: what seems to be doing this is the ''pci mmio allocation'' I googled this and didn't found a really explanatory definition... can someone help me with this so it doesn't takes ram from me? =(

 

[fowang]

Sounds like shared memory for the on board graphics, id check bios settings and disable the onboard graphics if you have a separate card.

 

[henydiah]

VGA onboard always use memory sharing with your RAM & clock control (integrated GPU used ). check in your Bios, how much your VGA & IGP use RAM ?

 

[Ijack]

You might want to check that you haven't set any RAM limit in msconfig.

 

[LuigiVN]

I checked RAM limit and it's setted to 0. I'm using a Radeon 5770. By accident while touching the BIOS I enabled the IGP and then turned it again to dedicated...

BTW:

in the integrated graphics pannel the following settings are avaliable :
PCI/ IGD
PCI/PEG
PEG/IGD
PEG/IGD
PEG/PCI


What one should I select?

I disabled ram remapping feature and RAM is up to 3326 MB...

 

[verbalizer]

touching the BIOS.?

 

[LuigiVN]

touching the BIOS.?

tweaking*

 

[verbalizer]

got it.

 

[LuigiVN]

BUMP

 

[fowang]

i belive PEG im not 100% sure tho as i have not used intergrated GFX for many many years

 

[Scotteq]

edit: what seems to be doing this is the ''pci mmio allocation'' I googled this and didn't found a really explanatory definition... can someone help me with this so it doesn't takes ram from me? =(

"PCI MMIO" means "Memory Mapped In/Out" for (some device) on your PCI buss. And, Yes, as opined earlier - Integrated Graphics can/do use system memory.

To see what's what, click your Start Icon, and type 'Resource' in the search box. Run the "Resource Monitor", and click on the 'Memory' tab.

Grey = Hardware reserved (nothing you can do about this, short of changing your hardware - when you changed back to Dedicated, are you sure you disabled the IGP??)

Orange = Modified (the system will have to write this to disc before this group could be free'd - normal to have some)

Blue = Standby (being used for Cache~ing - will be relatively low on start up, but Win 7 will gradually fill this with objects it thinks may become useful. This is normal behavior and has little/no impact on system performance)

Light Blue - Free (not being used at all. Please note is is desirable for Standby {blue} to be filled and the unused group to be small.)

 

[LuigiVN]

"PCI MMIO" means "Memory Mapped In/Out" for (some device) on your PCI buss. And, Yes, as opined earlier - Integrated Graphics can/do use system memory.

To see what's what, click your Start Icon, and type 'Resource' in the search box. Run the "Resource Monitor", and click on the 'Memory' tab.

Grey = Hardware reserved (nothing you can do about this, short of changing your hardware - when you changed back to Dedicated, are you sure you disabled the IGP??)

Orange = Modified (the system will have to write this to disc before this group could be free'd - normal to have some)

Blue = Standby (being used for Cache~ing - will be relatively low on start up, but Win 7 will gradually fill this with objects it thinks may become useful. This is normal behavior and has little/no impact on system performance)

Light Blue - Free (not being used at all. Please note is is desirable for Standby {blue} to be filled and the unused group to be small.)

The hardware reserved used to be 1 MB and it's now a whole GB... I tried settings my bios to defaullts and nothing happened...

edit: Is there a possibility my Video Card (5770) is using that memory? I recall reading something like RAm being used by the videocard to improve perfomance... How can I limit that to only the onboard 1 GB of GDDR5??? My resolution is tiny si 1GB is overkill (1280 x 720)

 

[Scotteq]

Only the aperature for the video card needs to be mapped - not the entire amount of video RAM. That varies depending on the card, but 256MB is a good upper limit.

I'll ask again: Are you *sure* you disabled the onboard graphics, and are you *sure* the 'Max Memory' setting is not checked in msconfig?

 

[LuigiVN]

I'm not sure, I'm currently using one of the DVI ports of my VC. but it could be enabled somehow. in the integrated graphics pannel the following settings are avaliable :
PCI/ IGD
PCI/PEG
PEG/IGD
PEG/IGD
PEG/PCI

Which one should I choose? Is there another setting in the BIOS i should normally be aware of in this case?

The max memory setting isnt checked in msconfig

 

[Scotteq]

The integrated graphics should be DISabled. If you enable them, they will consume system memory. This is likely the cause of your complaint.

 

[LuigiVN]

There isnt a setting like : Integrated graphics adapter: enables/ disabled. The only settings are the ones I mentioned up there

Merry Christmas

 

[tokencode]

Set it to PEG/PCI

PEG=PCIExpress
PCI=PCI
IGD=Integrated


That should fix your issues.

 

[LuigiVN]

Itd din't. My cousing told me to remove the DIMMs and then put them in again, i'll try that...

 

[LuigiVN]

Guys here's an interesting fact: When i boot only with 1 of my 2 gig modules, my PC show the Full 2 gigs. I tested both modules. When I get in the bios it still shows the "PCI MMIO allocation: 4096 MB to 3072 MB" WTF??? It's like it was written in the bios by default...

 

[verbalizer]

not to be an ass but, are you certain that your running a 64-bit OS.?

do you have maximum memory selected in 'msconfig'.?

 

[tokencode]

yea at this point I think i that is a valid question

 

[LuigiVN]

As i mentioned in the post title and in some replies it is 64 bit. My whole 4 GB used to work before... I tried flashing the BIOS but it is still there, i'm gonna try resseting the CMOS. Any more Ideas?

 

[verbalizer]

sounds like you need more sticks of RAM to test out...
meaning I'm thinking that you might have a bad stick of RAM or maybe a bad slot..
pulling the RAM is a good idea but now you need more to test each individual stick..

 

[LuigiVN]

I tested both sticks on 1 slot. they both show 2048mb... Does the ''PCI MMIO allocation'' has to do anything with bad slots?

 

[verbalizer]

i think you are over complicating things..