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Only 3.87 GB usable

Only 3.87 GB usable
« on: September 13, 2012, 01:53:56 pm »
Just to mention I've read hell lot of posts and forums but yet to get an answer.
My specs are mentioned below as signature.
I recently upgraded from a Core2Duo and DDR2 setup, where I used 4GB RAM with full 4GB usable.
Now, DDR3 seems to create problem or may be the H55 chipset series.
Gigabyte H55m-d2h mobo has no 'memory remap' option and onboard graphics option set to 'disable if ext PEG' [Note: no 'disable always' option available].
I'm getting 3.87GB usable RAM only.(Its kinda annoying. I want the rest 128MB please !! :P)
Though i do not believe in WEI, neway it rated 5.9 (initially it was 6.4 for 4GB DDR2)
please help me, how can I get full 4GB RAM usable.
Will another 4GB RAM resolve the problem means will I get full 8GB usable RAM then or some of it will again get reserved.
And one more thing, for users of this particular mobo
i'm not getting the 'On-Chip Frame Buffer Size' option under Advanced BIOS features in BIOS settings.
I have got the latest BIOS version flashed, even I flashed with the prev version n then again with the newer.
All drivers are up-to-date.
OS: Windows 8 Consumer preview 64-bit

Please help me, please
thanks in advance
Core i3 540 | Gigabyte H55M-D2H | GSkill RipjawsX 4GD3 | Seagate Berracuda 500GB @7200 rpm | Corsair CX500 V2 | Cooler Master Elite 311 Case | MSI NGTX550Ti Cyclone II | Samsung P2250 1080p Display