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4GB memory only showing up as 3.25GB

4GB memory only showing up as 3.25GB
« on: April 30, 2011, 10:37:02 am »
Got a
GA-880GMA-UD2H AMD AM3 DDR3 mATX

with this memory
Corsair memory 4GB XMS3 Kit (2x2GB) DDR3 1333MHz 240 pin DIMM Unbuffered
in slots 1 and 2

Win XP 32 bit  SP3 is only showing up 3.25GB

anyone know why?

Dark Mantis

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    • Dark Mantis
Re: 4GB memory only showing up as 3.25GB
« Reply #1 on: April 30, 2011, 10:56:20 am »
Hi

You are only showing 3.25 GB of memory because you are using a 32 bit operating system. It is a function of the OS that it has a 4 GB limit and then by the time certain amounts are used it reports what you are seeing now.
Gigabyte X58A-UD7
i7 920
Dominators 1600 x6 12GB
6970 2GB
HX850
256GB SSD, Sam 1TB, WDB320GB
Blu-Ray
HAF 932

Gigabyte Z68X-UD5-B3
i7 3770K
Vengeance 1600 16GB
6950 2GB
HCP1200W
Revo Drive x2, 1.5TB WDB RAID0
16x DLRW
StrikeX S7
Full water cooling
3 x 27" Iiy

sharris

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Re: 4GB memory only showing up as 3.25GB
« Reply #2 on: April 30, 2011, 01:16:23 pm »
I have 8 GB and all I get is 7520MB on a 64bit system.  I think Windows-7 only use under 500MB.  In your case only 300MB or under is used by XP.  I been totally ripped off of nearly 400MB used by simple wiring I guest.  That's use to be $500.00 to $1000.00 just yesterday, back in the 90's

To add to what Dark Mantis said, there is something that is called legacy I think.  If you had 6.0 DSL you only get .55 mbps up-load speed or less.  If you had a 1-TB HDD you only get around 938mb to use, the OS and the HDD itself use the the rest in order to work.  If cable promise you 2000 mbps, you only get 600mbps orless because the rest is shared else where.  Anything computer-wise you loss 10 - 30 percent or more to the OS and even the wiring itself.  That broke my heart for a long time.  I still can't get over how they sell bits instead of bytes or minutes that use to be hours for only a dime.  Not 100 years ago, just yesterday, back in the 80's.
« Last Edit: April 30, 2011, 01:28:25 pm by sharris »

Dark Mantis

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    • Dark Mantis
Re: 4GB memory only showing up as 3.25GB
« Reply #3 on: April 30, 2011, 01:18:50 pm »
Hey you sound like you are nearly as old as me sharris  ;D
Gigabyte X58A-UD7
i7 920
Dominators 1600 x6 12GB
6970 2GB
HX850
256GB SSD, Sam 1TB, WDB320GB
Blu-Ray
HAF 932

Gigabyte Z68X-UD5-B3
i7 3770K
Vengeance 1600 16GB
6950 2GB
HCP1200W
Revo Drive x2, 1.5TB WDB RAID0
16x DLRW
StrikeX S7
Full water cooling
3 x 27" Iiy

sharris

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Re: 4GB memory only showing up as 3.25GB
« Reply #4 on: April 30, 2011, 01:31:01 pm »
Old shoes got to kick it :)

Re: 4GB memory only showing up as 3.25GB
« Reply #5 on: May 01, 2011, 12:41:58 pm »
Thank you all.

Will upgrade to Win 7 soon

Re: 4GB memory only showing up as 3.25GB
« Reply #6 on: May 02, 2011, 05:36:59 am »
The reason you don't see the full 4GB on a 32 bit system is because 4GB is all it can 'address' and that address space is shared with other peripherals including your video card.

I have 8 GB and all I get is 7520MB on a 64bit system.  I think Windows-7 only use under 500MB.  In your case only 300MB or under is used by XP.  I been totally ripped off of nearly 400MB used by simple wiring I guest.  That's use to be $500.00 to $1000.00 just yesterday, back in the 90's

To add to what Dark Mantis said, there is something that is called legacy I think.  If you had 6.0 DSL you only get .55 mbps up-load speed or less.  If you had a 1-TB HDD you only get around 938mb to use, the OS and the HDD itself use the the rest in order to work.  If cable promise you 2000 mbps, you only get 600mbps orless because the rest is shared else where.  Anything computer-wise you loss 10 - 30 percent or more to the OS and even the wiring itself.  That broke my heart for a long time.  I still can't get over how they sell bits instead of bytes or minutes that use to be hours for only a dime.  Not 100 years ago, just yesterday, back in the 80's.

The offset is due to the difference in decimal and binary math (http://blog.ericlamb.net/2011/02/truth-in-hard-drive-space-marketing/) This link says a lot.

emboss

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Re: 4GB memory only showing up as 3.25GB
« Reply #7 on: February 26, 2012, 01:27:18 am »
Reply to "sharris"

You have to remember the  GM-880GMA-UD2H has an IGP (integrated memory control), therefore, Windows 7 64 Bit has to allocation Video RAM for the onboard radeon 4250 GPU, which is designed to approx 512MB as sideport memory.

Windows XP 32-BIT to the other user... that's the OS operating and a portion IGP allocation limitations.
// Gigabyte GA-880GMA-UD2H, AMD Athlon II X4 640 @ 3.3 GHZ, 16 GB Corsair CML8GX3M2A1600C9, Siliverstone Temjin TJ08B-E Black mATX Case, Seasonic 660W X Series, Micron M4 64GB SSD, NAS Storage 5.45 TB. //