Replacing and upgrading Macbook Pro Unibody Logic Boards

[slowdown5646]

Hey, I am currently using a mid 2009 15" Macbook Pro. I've had it for years and upgraded some of the parts including putting in an SSD in conjunction with a big hard drive (to make a fusion drive) and more RAM. It still runs pretty nicely but the logic board's processor is quite old and so it's beginning to run slow. I'd prefer not to buy a new laptop at this time but I was wondering if I could perhaps install a newer motherboard from another unibody Macbook Pro with a newer processor. The laptop has Yosemite installed currently. It's been a good music server for many years and I'd like to keep it going and fresh if possible, advice would be appreciated!

 

Specifically this is what I have now: https://www.ifixit.com/MacBook-Parts/MacBook-Pro-15-Inch-Unibody-Mid-2009-2-53-GHz-Logic-Board/IF161-045

 

And ideally I'd like to install: https://www.ifixit.com/MacBook-Parts/MacBook-Pro-15-Inch-Unibody-Mid-2012-2-3-GHz-Logic-Board/IF161-097

 

I've replaced the motherboard before, I'm only concerned about compatibility issues. Thank you!

[Skeptic]

It will almost certainly be incompatible.

 

Age of the board should have no effect on speed.

Maybe open it up, clean out the fan, and replace the thermal paste though.

[mrvco]

You'd be asking an awful lot of your soldering iron and hacksaw to get a 2012 logic board working in a 2009 machine. It might be a fun science project if you just had the parts laying around, but for $700 I'd just put that towards a new MBA or MBP.