01-03-2012 06:23 AM - edited 01-03-2012 09:32 AM
My question is about the maximum RAM that I can add to my laptop HP530, I read in a lots of forum that the Mainboard only support 2 GB of Ram (Ddr2 1 GB per slot), but yesterday i tried with 4 GB of RAM (2x2GB) and the Bios and Windows show 3.25 KGB (I know that an 32 Bits operating system only show 3.25 GB of RAM rather of 4 KGB).
But i want to know if the 3.25 GB of RAM are really used by the laptop or only used 2 GB of them (the Max of the Mainoboard "recomended by the manufacturer") and the rest is a waste of Money.
Thanks for your help
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01-03-2012 08:41 AM - edited 01-03-2012 08:43 AM
If you installed 2 x 2 GB of memory in your notebook and the BIOS is reportiing 4,096MB of memory and Windows is reporting 3.25 GB of memory, then you are using all of what you can (4 GB) -- getting your money's worth, as it were.
In other words it is not a false reading (says 3.25 GB, but really only using 2 GB).
If it was only using 2 GB of the 4 GB, it would report it as such in Windows.
I have 16 GB of memory in my 8200 Elite CMT.
In the BIOS it shows 16 GB of memory installed. In Windows XP 32 bit, it shows 4 GB installed.
01-03-2012 10:47 AM
That is correct.
Look in your BIOS under the system information window.
If it shows 4096 MB of memory, and you you also see 3.25 GB in Windows, it is using the whole 4 GB as best it can. Your Mobile Intel 940/945 chipset is capable of running up to 4 GB of memory.
I have a HP 6910p notebook. Specs state max memory is 4 GB. I am happily running 8 GB in my PC because the mobile Intel 965 chipset supports 8 GB, and I guess HP didn't limit the memory to 4 GB in the BIOS.
11-03-2012 11:42 AM
I also report the same.
4GB installed, BIOS sees 4096MB installed and Windows 7 64-bit sees only 3,37GB installed.
It is a good thing to know that eventually Windows utilizes all 4GB of it but how do you know? I mean, if it is reported as 3,37GB and Task Manager also shows the same how can Windows use the remaining MB's of memory?
Just wanted to know.
Thank you for the advice and the support!
11-03-2012 11:52 AM
The other 630 MB is hardware reserved.
Most of it probably went to the video.
In order for an Intel based PC to show all 4.00 GB (and not 3.25 or 3.37, etc) in the system and security info screen, the chipset has to be capable of addressing more than 4 GB of memory ( 8 GB for example).
If your PC has the Intel 945 or earlier chipset, even with a 64 bit operating system, you are seeing all that it has to give.
11-03-2012 01:21 PM
So all that it has to give is 3,37GB?
Note that the video card on this laptop is 256MB. So 4,096 - 256 = 3,840 and 3,840 - 3,370 = 470MB.
So the chipset "loses" 470MB somewhere? Oh well , I can live with that...
11-03-2012 03:34 PM
Yes, that is about right.
We have to live with such things as we have no other choice.
Some notebooks are much worse, only showing 2.5GB - 3.2 GB of usable memory when 4 GB is installed.
12-29-2012 07:03 AM
You will probably be all right with a 2GB single-channel memory module but I think that a 1x1GB in both slots is better because it will take advantage of the dual-channel architecture of the laptop. But if you only have a 2GB module it should work fine with it in one slot. Mine is working flawlessly with 2 modules of 2GB in each slot (although it can only address 3,37GB of usable memory).
Hope this helps.