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I have a Color Classic Mystic (LC 575 logic board). When I try to use the Soft-475-Overclock extension I get a red X on the extension during startup. Getting it on System 7.1, 7.5.5 and 8.1. I am using the v0.52 package. The documentation indicates that this is due to it not being supported on...

Thanks!

I picked up this computer a few years ago on eBay for only $125. It was in nearly perfect condition with some initial signs of rust on the inside of the case cover that I was able to get completely cleaned before it did any permanent damage. I vividly remember seeing this exact computer in the...

I also have 4MB I also have 4MB on Macintosh SE as well.

I posted the info about Norton System Info 3.5.3 in my thread on 68KMLA to let others know there as well. Thanks!

I moved the Benchmark Results folder and reran Norton System Info 3.5.3 and it works. I will move back more benchmark results to get a good sample. Thanks!

I tried running Norton System Info 3.5.3 on both System 7.0.1 and System 7.1 and skipping the Video tests. When trying display the results, I get an Address Bus Error. I then ran Snooper 2.0 the CPU test came out to 229% of an stock SE. The Video test came out at 166% of a stock SE. The FPU...

Thank you sir!:)

I tried running Norton Utilities System Info 3.5 on my Mac SE. Unfortunately, it get a Bad F-Line Instruction error when it tries to display the results.

I looked through my parts inventory and found a 40MHz MC68882 math coprocessor. I swapped it out for the 16MHz MC68881 on the accelerator and ran through SpeedOMeter 3.23 under System 7.0.1 (The daily driver OS I run on this Macintosh SE). Here are the results, nothing earth shaking, but the...

Thanks for posting the v1.7 Control Panel. That is really what this vintage computing community is all about, helping one another and preserving computing history!

It's for plugging in an additional expansion card like a video card. I think you could get one specifically for this accelerator from SuperMac. The manual does not go into any detail on it.

I posted a thread about the SuperMac SpeedCard along with the results here: https://tinkerdifferent.com/threads/macintsh-se-supermac-speedcard-accelerator.4257/

Here are the results from SpeedOMeter 3.23 on System 7.1.

Here are the results from SpeedOMeter 3.23 on System 7.0.1.

Here are the results from SpeedOMeter 3.23 on System 6.0.8.

I just picked up a Macintosh SE SuperMac SpeedCard accelerator. This accelerator has a MC68000 clocked at 15.67MHz along with a MC68881 math coprocessor at the same clock speed. Finally it has 16K SRAM cache. I have been interested in getting one of these for quite some time to see just what...

I do have a PGA 68882 in couple of things. I may give it a try someday, but based on past experience, the increase would not be that great. I have tried both a 68881 and 68882 in the FPU card on Macintosh LC. The speed difference was 5-10% at most, depending on the benchmark. When I post some...

I will try and get full results this weekend and posted with pictures using SpeedOMeter 3.23.

I got the SuperMac SpeedCard installed and benchmarked using SpeedOMeter 3.23. I am having issues taking pictures of my screen so I just summarize the results. CPU: 233% increase (2.33 Index) Graphics: 75% increase (1.75 index) SCSI: No real difference (I was getting 1.5 and now around 1.6...