PB145B
Well-known member
I have been patiently waiting for many years for an affordable reproduction accelerator for the Mac SE, and the time has finally come!
I wasn’t even aware these were out until I saw Ron’s video on it, and I immediately went and bought one!
Here it is installed onto my SE’s logic board (please ignore my crude battery hack job, I’ll clean that up soon).

Love that red PCB!
I had a few issues on initial boot up. Apparently, this accelerator supports System 7.0.1 with the tuneup, which is exactly what I had on my SE, but I kept getting a bomb on startup. I fiddled with it for a bit but nothing worked, so I updated to system 7.1, which solved all of my issues! So I recommend using System 7.1 with this accelerator over 7.0.1.
Next issue I had is with formatting 800k and 400k floppies. It would immediately spit out the disk with an “Initialization failed” error. The workaround I have found for this is to go into the Performer control panel prior to formatting a disk and turn off “Instruction Cache”, which seems to effectively disable the controller. Then afterwards you can turn this setting back on. You don’t even have to restart. I’m satisfied with that workaround, but if there’s another solution out there I’d love to know!
Otherwise, everything has been absolutely flawless and my SE is now VERY fast!
Here’s my Speedometer 3.23 benchmark results (stock SE is on the left and the Performer SE on the right).

Absolutely INSANE!
I highly recommend this accelerator if you want to get a huge performance increase on your original Macintosh SE without breaking the bank!
And I want to say thank you to @maceffects for offering this amazing product for sale at such a reasonable price. Now I don’t have to go chasing down $300+ dollar accelerators that may not even work!
Stuff like this really shows how far the vintage computing hobby has come since 2010 when I joined, and it really warms my heart I must say!
I wasn’t even aware these were out until I saw Ron’s video on it, and I immediately went and bought one!
Here it is installed onto my SE’s logic board (please ignore my crude battery hack job, I’ll clean that up soon).

Love that red PCB!
I had a few issues on initial boot up. Apparently, this accelerator supports System 7.0.1 with the tuneup, which is exactly what I had on my SE, but I kept getting a bomb on startup. I fiddled with it for a bit but nothing worked, so I updated to system 7.1, which solved all of my issues! So I recommend using System 7.1 with this accelerator over 7.0.1.
Next issue I had is with formatting 800k and 400k floppies. It would immediately spit out the disk with an “Initialization failed” error. The workaround I have found for this is to go into the Performer control panel prior to formatting a disk and turn off “Instruction Cache”, which seems to effectively disable the controller. Then afterwards you can turn this setting back on. You don’t even have to restart. I’m satisfied with that workaround, but if there’s another solution out there I’d love to know!
Otherwise, everything has been absolutely flawless and my SE is now VERY fast!
Here’s my Speedometer 3.23 benchmark results (stock SE is on the left and the Performer SE on the right).

Absolutely INSANE!
I highly recommend this accelerator if you want to get a huge performance increase on your original Macintosh SE without breaking the bank!
And I want to say thank you to @maceffects for offering this amazing product for sale at such a reasonable price. Now I don’t have to go chasing down $300+ dollar accelerators that may not even work!
Stuff like this really shows how far the vintage computing hobby has come since 2010 when I joined, and it really warms my heart I must say!