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GA-H55M-UD2H 4GB RAM Installed Win7 64 < 4GB Usable

GA-H55M-UD2H 4GB RAM Installed Win7 64 < 4GB Usable
« on: December 29, 2010, 03:25:19 pm »
Good Afternoon.

My System config is

O/S : Win 7 64 Bit
Memory : CMX4GX3M2A1600C9
MoBo : Gigabyte GA-H55M-UD2H
CPU : Intel Core i5 650

Having built and installed the operating system, when entering control panel and looking at the system it states that 4GB RAM installed but something like 3.74GB RAM usable. I was just wondering why there is some 0.26GB of RAM not available. I did not know if the additional RAM was allocated somehow to the On-Die GPU.  However this does not seem to be the case since in some cases people have added a dedicated GPU via PCIe slot and the missing RAM phenomina still exists.

Looking at various sites this seems to be seen by other people - however I cannot see any sign of an explanation or a solution.  Has anyone any updates on this ?

Regards, Paul
« Last Edit: December 29, 2010, 03:31:27 pm by ParanoidAndroid2008 »

Dark Mantis

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Re: GA-H55M-UD2H 4GB RAM Installed Win7 64 < 4GB Usable
« Reply #1 on: December 29, 2010, 04:15:00 pm »
This is a "feature" of this chipset. If you check through the forum you will find threads discussing it and the reasons.
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

Re: GA-H55M-UD2H 4GB RAM Installed Win7 64 < 4GB Usable
« Reply #2 on: December 29, 2010, 05:10:49 pm »
I will have a search.....Cheers