2gigs showing but 3gigs installed??

icehot666 · 16 Apr 2007 at 13:14

Hiya,

I have 2x1Gb OCZ platinum PC6400 modules and 2x512 modules of the same spec running in dual channel mode in my P5B Deluxe Wifi board with an e6600.... Windows though is only reporting 2gigs of ram, but cpu-z is saying 3gigs is installed, is this normal or is something going wrong? (Shown in the screenshot)

NathanE · 16 Apr 2007 at 13:45

Windows is saying 2GB :confused:

CPUZ does seem to be wrong though.

icehot666 · 16 Apr 2007 at 13:48

Yeah I dont get it, I thought 4gb was the problem in windows, I have no idea why this isn't working, CPU-Z is correct though, I DO have 3 gigs in my machine, and it is reporting the correct SPD values that I've set manually in the BIOS, so I'm really confused...

IAmATeaf · 16 Apr 2007 at 15:19

What does the initial DOS screen show as installed when you boot it up?

icehot666 · 16 Apr 2007 at 16:02

Hi it shows 3072Mb as well...

Cyber-Mav · 16 Apr 2007 at 16:25

may need to enable memory hole option in bios. i had to do that to get 4 gigs of ram to work even in xp x64

Corasik · 16 Apr 2007 at 18:52

Dont you need to put in an extra boot option for 32bit windows to accept 3Gb ram. Looks like your part way there, as its enabled Phyiscal Address Extension.

Although the performance gains going over 2GB, are reduced due to the fact that not all applications can make use of PAE addressed memory, and the PAE itself is a page based system, swapping memory in and out of a page buffer. Not very efficient really (Although still an order of magnitude faster than a hard drive paging).

Add /3GB to the end of the operating system lines in boot.ini to enable the extra memory.