Often times when troubleshooting issues on your motherboard or when contacting the official support, you need to know the motherboard revision.
Knowing what your motherboard’s revision is further helps in pinpointing the cause of your issues. For instance, if a certain issue lies with the BIOS, then the motherboard’s revision will help figure that out.
Fortunately, it is fairly easy to find the exact revision of your motherboard. You can do the good old physical inspection of your motherboard, or you can use certain in-Windows services or third party software to figure out the revision of both the motherboard and the BIOS.
In this article I will talk in detail about what is motherboard revision. I will also talk about what BIOS revision is and also how to find both the motherboard and the BIOS revision of your PC.
What is Motherboard Revision?
A motherboard revision, as the name suggests, is its latest iteration. It indicates whether it has been improved upon or not.
The first revision of the motherboard is Rev 1.0 or Rev 1. If there is an improvement made to the motherboard, the designation changes to 1.1, and then to 1.2 so on and so forth.
Again, if you have a Rev 1.0 motherboard, then you have the original motherboard.
The changes that a motherboard can have with subsequent revisions include:
- Better cooling design
- Newer BIOS capable of supporting newer CPUs
- Better PCB design
- Better structure quality
- Newer headers etc
So essentially when you have the same board but only a slight change has been made to it, then it is labelled has a newer motherboard revision of the original motherboard.
Example of Motherboard Revision 1.0 vs 1.1
The following examples show what a difference between version 1.0 and 1.1 can entail:
Structural and Connectors Difference
Often times, you can find improved ports and stronger slots with each newer revision.
Here we have the Gigabyte GA-B75M-D3H.
The first image shows the Rev 1.0, the second image shows the Rev 1.1 with the differences highlighted.
Subtle Component Changes
Other times the difference between revisions of motherboards are more subtle.
For instance, the difference between the Gigabyte B550 Auros Elite AX V2 Rev 1.0 and Rev 1.1 is that the former uses the Intel WiFi 6, whereas the latter uses the AMD WiFi 6.
How to Find Motherboard Revision?
You can check your motherboard revision through two simple ways:
- Through Physical Inspection
- Through CPU-Z
1. Identifying Motherboard Revision Through Physical Inspection
The first and perhaps the easiest way to figure out what revision of the motherboard you have is to physically have a look at the motherboard.
On the sides and edges of the motherboard you can often find a label indicating what revision your motherboard belongs to.
Take for instance the GA-P67A-UD3 motherboard below. On the bottom left corner of the my motherboard, I can see the revision labelled clearly as Rev 1.0.
2. Finding Out Motherboard Revision Through CPU-Z
CPU-Z is a fairly popular free third party software that can shed plenty of information regarding the hardware you have.
This is a very light utility and almost always a must for anyone wanting to troubleshoot issues or understand the PC hardware they have.
- Download CPU-Z from the official website
- Install it and Run it.
- Once it starts, head over to the “Mainboard” Tab
- Look for the two fields in the model name column
- The first field in the column is the model name of the motherboard (in my case 8259).
- The second filed indicated the version of the motherboard. This is the field of interest to you. (in my case 83.45)
In my case (I am on a laptop at the moment) the revision of the motherboard is 83.45. Don’t get too confused by this number. Laptop motherboards follow a different standard for revisions.
If you are on a desktop then you would see a more logical sequence of number such as 1.0. 1.1, 1.2 or in the form of 1, 2, 3, 4.
Also Read: How to Check What Motherboard You Have?
What is BIOS Revision?
BIOS Revision refers to the current version of the BIOS installed in your system.
BIOS is essentially the most initial firmware that fires up when you turn on your PC. It checks the hardware and operates them at the parameters set within.
The revision of the BIOS has a significant impact on your PC’s hardware. For instance, the BIOS version dictates what CPUs are compatible with your motherboard.
For instance, when the 400 series AMD chipsets were released i.e AMD B450 with the AM4 socket, they were initially compatible only with the AMD 1000, 2000 and 3000 series CPUs.
However, since the AMD 5000 series also uses the same AM4 socket, to make them compatible with the B450 motherboards, they needed their BIOS to be upgraded.
In addition to that some BIOS versions offer extensive control over your hardware such as allow you to overclock. Others, however, particularly on laptops, are more restricted versions.
Newer BIOS, now known as UEFI have a more robust graphical user interface and can interface with mouse cursor, while others have mundane looks and are controlled only by the keyboard.
How to Find Out BIOS Revision?
There are many ways to check the BIOS version
- Checking Through DXDIAG
- Checking Through BIOS Itself
- Checking Through CPU-Z
1. Check Through DXDIAG – DirectX Diagnostic Tool
This is by far the easiest and the most comprehensive way to check what BIOS version you have installed on your PC.
- In Windows 10 go to Windows Search in the Task Bar
- Type DXDIAG
- Select the DXDIAG program, which should open the window as shown below.
- Look for the row with the BIOS version
I can see here that the BIOS version I have is InsydeH20 Version 05.11.34F.35
2. Check the BIOS Revision Through the BIOS Itself
Of course, you check out what version of the BIOS you have through the firmware itself.
On Windows startup, go to your BIOS. In the Main or the General section look for fields similar to “BIOS Version” and “BIOS Vendor”.
My BIOS version as indicated above is Insyde F.35.
3. Checking BIOS Version Through CPU-Z
Finally, you can use the free third party software, CPU-Z in order to check the BIOS version.
With the utility downloaded, installed and running. Head over to the “Mainboard” section and look for the field marked as BIOS.
Here you can see the Brand (vendor) of your BIOS, its Version as well as its version DATE.
So what is motherboard revision? A motherboard revision basically indicates whether it is the originally designed motherboard and whether it has been improved upon.
Revision 1.0 indicates the original version. If there have been subsequent versions such as Revision 1.1, 1.2 of the same motherboard, that mean improvements have been made.
Often times when troubleshooting issues, you have to know both the motherboard revision as well as the BIOS revision.