Plenty of schools will you just usually will have to take some undergrad courses like jlund said to make sure you have the knowledge.
Source: doing this from a mechanical engineering degree this year.
What I did, went and talked to my local university's CS advisor to see how I could pursue a degree in CS and they suggested that instead of a second bachelors I go for a MS.
So if you have a local college you would like to go to or if your alma mater has a degree program that interests you I suggest making an appointment with an advisor to talk about options. Many times you can start off non-degree and switch to degree seeking grad after a set amount of hours.
The processor matters when you get into complicated assemblies or analysis of parts. Your school should have computers capable of running whatever you need to do and to be honest a home built computer of ~$500US would be capable of undergrad work easily.
I specced the MBA with upgraded processor which would definitely be necessary (for CAD) but even the article I linked said it was a little slow with the upgraded processor.
I personally did all my CAD work on campus and MATLAB/programming at home because of computer specs.
I think a macbook is a nicer computer choice if you don't mind doing CAD work at school, or if later down the line you decide to spend ~$500 building a computer (just the computer not monitor, keyboard, os) because working at school is a burden. Though a lot of my CAD projects were group projects, depends more on school though.
The analysis work definitely is processor heavy (I think PRO/E might use CUDA somewhat now) but it just means a slower processor will take longer to run the analysis).
Just running the CAD program usually requires an okay processor and video card but if you google around or ask on forums some other people might have better experience with running solidworks on a MBA.
Those would do more than fine. If you go with lenovo they have a very good warranty with accidental damage protection for a couple hundred dollars for 3 years if you're worried about build quality (I think you have to buy from the lenovo site though).
I don't know if a MBA will be strong enough to run Solidworks okay or not (you will have to use bootcamp if you want to run it so make sure you have enough harddrive space win7 + solidworks probably means 40-50gb or more easy + files and other such thing fills up fast). I think I had modeling files take up 10GB flash drive easy.
13" is okay for matlab, you could probably get away with 11" but I think it would be painful.
If you want to run the CAD software like Solidworks a MBP 13" might be the better choice (256GB + 8GB RAM) comes out to cheaper than the MBA 13" equiv with upgraded proc. And could probably run it reasonably well-ish (better than MBA). You usually don't need to do a lot of model analysis in undergrad but sometimes those CAD programs can be a system hog. Especially if you get to complicated model assemblies.
If you don't want to run the CAD software the MBA 13" should be okay it just might take longer to boot up matlab but with the programs you do processing power shouldnt make that much of a difference. If you can hook up an external monitor an 11" might be fine as well.
I graduated from ME a few years ago and I can say that most everything you interact with (software-wise) is Windows based. So keep that in mind for your purchase. You may be able to run it on a MBA but some of the programs will run terribly (FEA/CAD) it really just depends on what programs your university uses and if you want to work in the computer lab or on your own computer.
Matlab was what we did all our programming in and that works fine on a Mac.
I feel like a laptop is much nicer choice but 11" is pretty small to get work done on (especially if you're going to try CAD software). And matlab can be screen heavy especially if your classes get into simulink.
Source: doing this from a mechanical engineering degree this year.
What I did, went and talked to my local university's CS advisor to see how I could pursue a degree in CS and they suggested that instead of a second bachelors I go for a MS.
So if you have a local college you would like to go to or if your alma mater has a degree program that interests you I suggest making an appointment with an advisor to talk about options. Many times you can start off non-degree and switch to degree seeking grad after a set amount of hours.