ASUS P5B BIOS update

behremfaruk10 · Nov 13, 2018

Hi,
I used to have 3GB of ram, but then I decided to go for a little "upgrade". So I bought one stick of 1GB ddr2. But my PC says that 4GBs are installed but 3GBs are usable. After some research I found out that the problem is BIOS version.
Btw, ram is 4x1GB, I don't know about frequency and latency. And the Motherboard version is the first one I saw that.
If you need to know more to be able to help me, just write down, I'll say you everything I know about my ram, motherboard,etc..
Thanks!
(*Sorry for my bad english!*)

Barty1884 · Nov 13, 2018

The latest BIOS is 2104:
https://www.asus.com/ca-en/Motherboards/P5B/HelpDesk_BIOS/

Mixing & matching RAM modules can be problematic though. Just because they're detected doesn't inherently mean they'll just "work"

behremfaruk10 · Nov 13, 2018

Barty1884 :

clarkjd · Nov 13, 2018

Also, What version of Windows do you have? If it is a 32-bit version, you wouldn't be able to use more than 4GB of ram anyway. Normally, with 4GB installed on the 32-bit version, you would only have approxamately 3.5 GB usuable.

behremfaruk10 · Nov 13, 2018

So what should I do? Take the last stick out? and one from other 3 put in the 4th stick?

behremfaruk10 · Nov 13, 2018

clarkjd :

I have 64-bit system, Windows 10 Pro

clarkjd · Nov 13, 2018

So you have three one GB sticks of ram and one 4GB stick?

behremfaruk10 · Nov 13, 2018

clarkjd :

No, I have 4 sticks of 1GB, meaning 4GB in total, but only 3GB are usable

clarkjd · Nov 13, 2018

behremfaruk10 :

That is not unusual. Some of the 4GB is used to load the OS into, as well as various other drivers.

shknawe · Nov 13, 2018

Use cpuid, click on memory tab and it will tell you speed and timings of your ram. If they have different speeds they will default to the slowest stick on board. https://cpuid.com/

behremfaruk10 · Nov 13, 2018

But I want to know how to update my BIOS because I don't know how to.

clarkjd · Nov 13, 2018

behremfaruk10 :

The procedure for updating your BIOS is in the owner's manual for your motherboard. You need to follow that procedure EXACTLY as written. Anything else runs the risk of bricking your motherboard.

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ASUS P5B BIOS update

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