Tom's Hardware > Forum > Motherboards & Memory > Gigabyte > [Solved] GA-MA785GPMT-UD2H RAM Issue...

[Solved] GA-MA785GPMT-UD2H RAM Issue...

Forum Motherboards & Memory : Gigabyte - [Solved] GA-MA785GPMT-UD2H RAM Issue...

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Best answer from bilbat.

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ambientmf   10-07-2009 at 02:49:42 AM

Just finished a budget build for a relative.

Athlon II X2 245
Gigabyte GA-MA785GPMT-UD2H Mobo
4GB DDR3-1333 G.Skill RAM
WD Caviar Black 1TB, Samsung DVD writer, 380W Antec EarthWatt, Antec NSK2480

For some reason, my BIOS reports I only have 3.5GB of RAM in the Stanard CMOS Config screen. I inserted both RAM modules individually and BIOS reported 1.7GB extended mem.
Can someone tell me why this may be? I'd like to use all 4GB of memory.

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Best answer from bilbat
By default, your Radeon HD4200 graphics chip is set to use both the on-board 128MB DDR3 SidePort memory, and an automatically allocated piece of your main memory real estate - that's why you're 'missing' some... The settings are on the "Advanced BIOS Features" page of your BIOS, and are documented on page 47 of your manual.
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Bronze Motherboards badge bilbat   10-07-2009 at 03:34:01 AM
Best answer

By default, your Radeon HD4200 graphics chip is set to use both the on-board 128MB DDR3 SidePort memory, and an automatically allocated piece of your main memory real estate - that's why you're 'missing' some... The settings are on the "Advanced BIOS Features" page of your BIOS, and are documented on page 47 of your manual.

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