Windows 7 only recognises 2 gigs of 3 gigs installed

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hynesy

TS Maniac
Gday,

I bought a new computer today to replace my old crappy one and I am having an issue with my RAM, its not major by any means but is just a nuisance. The hardware is an Intel i5 750, the Mobo is an ASRock p55M Pro, the ram is 3 sticks of 1 gig each. As for the problem, Windows 7 x64 only shows that 2 gigs of ram DDR3 is installed when 3 gigs is installed. Now even though the RAM is DDR3 this mobo only supports dual channel ram, not triple channel, so I am thinking this might be causing the issue.

Cheers
Hynesy

PS I checked the bios post on boot and it does not recognize that 3 gigs is installed, there appears to be no settings for it in bios.
 

Xecutor

TS Enthusiast
P55 mobos only support dual channel DDR3 RAM. If you have triple channel RAM, you'll have to exchange it for Dual Channel DDR3 RAM. X58 mobos are the only ones I think that support Dual and Triple Channel DDR3 RAM.
 
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