Solved Is it necessary to download these updates?

This is rather odd but I purchased two new desktop computers which are IDENTICAL except for different motherboards-- mine has the BigBang motherboard and my husband's has a Gigabyte motherboard. They are both running Windows 7 Ultimate 64bit. When we check windows updates, his has some updates listed under Important whereas those same updates are listed under Optional on mine.
I would be greatly appreciative if anyone knows anything about the necessity of these updates. The updates are as follows...

Update for Microsoft .NET Framework 4 on Windows XP, Windows Server 2003, Windows Vista, Windows 7, Windows Server 2008, Windows Server 2008 R2 for x64-based Systems (KB2468871)
Download size: 27.5 MB

Update for Microsoft .NET Framework 4 on Windows XP, Windows Server 2003, Windows Vista, Windows 7, Windows Server 2008, Windows Server 2008 R2 for x64-based Systems (KB2533523)
Download size: 37.5 MB

Update for Windows 7 for x64-based Systems (KB2545698)
Download size: 2.2 MB

Update for Windows 7 for x64-based Systems (KB2547666)
Download size: 4.6 MB

Update for Windows 7 for x64-based Systems (KB2563227)
Download size: 208 KB

Update for Windows 7 for x64-based Systems (KB2603229)
Download size: 36 KB

Update for Windows 7 for x64-based Systems (KB2607576)
Download size: 7.2 MB

The ones I'm most concerned with are the first two large updates. Why are they optional on mine and important on his?? Plus, I think he only has one of them listed in his updates. And what about all the other smaller updates. If they are security updates, why aren't they listed under my important choices instead of my optional choices? I do not want to get these updates unless they are something that is really needed. At least none of them match the numbers of the list of the 3 bad/spy updates we should never get so that's good.

Thanks for any thoughts on this matter.

Sher,

IMHO,
No two computers are exactly the same.
The combinations of programs, drivers, hardware components etc are infinite.
Throw in different patterns of use, no matter how small & comparisons become irrelevant.
Why does one member of a family become ill & the others not so?

FYI
Please refer to the article below that MAY help to clarify things for you.
Description of the standard terminology that is used to describe Microsoft software updates

I definitely agree that no two computers are alike. But our situation did seem odd to me in that I ordered these 2 computers from the same company in Ohio after customizing all components. I ordered the same components for every single thing except the motherboard and the operating system (windows 7 ultimate 64bit) was installed on both computers using the same master disc. I purchased two windows discs separately ($199 each) from the same company but we have not even opened them yet. I can only assume the difference in the motherboards is why we are being offered the updates differently. BUT I guess my real question is, do I really need these updates as it will take awhle for me to get them.
Thanx for your response and time.

The motherboards will be using different drivers.
These drivers may also install applications - and these applications may be using different parts of the OS and ancillary services such as .NET 4 . Note that Win7 comes by default with .NET 3.5 installed - .NET 4 must have been installed as some later point. One may have had teh Client software installed, while the other may also have had the Extended software installed. (Check Programs & Features for that)

JMH-- I neglected to say thanx for the article link (which I did read) but it didn't even list the terms Important or Optional. Those are the only types of updates we have ever been offered.

NoelDP-- My previous post goes along with what you mentioned, " the reason for the difference must be because of 2 different motherboards." It's just odd to me why one system would classify an update as Important and the other would classify the same update as Optional. Our new systems came with the sp1 already installed and both had the Framework 4 already installed. I checked 'Progrms & Features' as you suggested and both systems just show 'Microsoft.NET Framework 4 Client Profile' in that location.

I guess I will prolly download all thse updates regardless because they're all safe numbers to get so no real worries there. Thank you both for your thoughts on this.

Yes, my systems are always set to just notify on updates. Then I read the info on each one before I even decide to download it. The updates I listed in my initial post here are all OPTIONAL updates for me so will check them carefully.

Thanx Again

Thanx and same to you.

Should you require any assistance in the future you know where to find us
,

Software on your computer is another factor. I've had to do some programming for school and have received tons of updates for stuff like SQL Server which would not be needed on most machines. Since they are security patches for the most part, they get labeled "Critical" or "Important" on my computer, but would be unnecessary on most others.

to profdlp,
Since u took time to respond, I thought I should at least acknowledge your post as I'm always appreciative of any help. My main question here was why would the exact same update be categorized as Important on one machine and just Optional on another. Regardless of components, softwre, etc., the update should have been at least categorized the same on every computer (was my thought.) Also, the updates I listed are all under Optional on my system so do I really need them. These updates appeared on the 2 computers at time of purchase before anything new was installed on either system. No one here was really expressly familiar with any of the updates so actually that is a good sign. If there was anything 'bad' about them, I'm sure we'd have heard about them in some forum out on the web. As I mentioned earlier, I will most likely go ahead and download them, if just to get them out of my notify list without haviing to hide them.
Thanx for your response and I think this thread has run it's course.