Windows 7 ultimate x64 version not using the full available memory on a computer with a 64 bit processor. System memory 4.00 gb (2.93 gb usable)

Windows edition:  windows 7 ultimate
Installed memory: 4.00 gb (2.93 gb usable)
System type:       64 operating system
computer:           acer aspire 5730z

the bios show 4.00 gb memory available, windows shows 4.00 gb available why is only 2.93 gb useable on a 64 bit intel processor and OS?

In the future i plan to build an i7 desktop with 6gb of triple channel memory and put on windows 7 ultimate does this mean it will show 6.00 gb 2.93 gb usable?
 

Question Info


Last updated March 15, 2018 Views 2,241 Applies to:
Answer
If you can find out what motherboard they used in that laptop you may find an answer.
Not all motherboards show it (or even use it) the same.

Also, as Ralf said, part of the upper registers are reserved for archaic reasons.

Check for BIOS update and video driver for that model as well.
VP Tech Services
VP Tech Services

Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.