Fair enough to both questions.

I was looking at pictures of SYSInfo for several different systems and was comparing the Dhrystones and Mips.  I know there is a lot more that figures into it, but I kept it simple.

But now I can't seem to find the numbers I originally saw.

It basically came down to the Vampire (I think) was a lot faster, but with the specs mentioned (in one interview, AmigaKit said the A1200NG was going the be about "X" times faster then it currently is) the Accel. Card coming, the A1200NG surpasses it.

A new SBC board arrived in the mail today and I installed it in its place. I did some tests and played a few games, restarted and shut the device down through the menu. It hasn’t frozen at any point now, so it seems to be working! The original SD card is in use and there are no issues, so I guess the problem must have been with the board itself? Thanks. I’ll keep testing it over the weekend and let you know if anything comes up, but so far it looks good. 

Open a shell in AmiBench

copy from envarc:Sys/def_disk.info to Work:Disk.info

you will probably have to resnapshot the icon

Alternatively just do

delete work:disk.info

and you will get a def_Disk.icon, which can be resnapshoted to the position of your choice and become a real icon

Fixed

Many Many thanks to Mr @F0LLETT

Hello. I am a replete A3000D owner that has had limited experience with the machine. My particular example originated from our local University and a Professor of Astrophysics. It was quite well set up until I mistakenly erased the startup sequence script on the HDD and had to reformat it.

My A3000D also has Kickstart 3.1 roms. This is fundamental as the 3.1 version had many fixes for HDD functions. The early A3000's were capable of dual softkick booting 1.3 and 2.04 roms from disk. Having a writable rom tower on the motherboard. Later releases had v 2.04 roms.

The SCSI chip was released in a couple of versions IIRC and there are two key setups for the SCSI chain of devices. A "strata" setup,  "/" originating solely from the SCSI header on the motherboard and a Y setup with the SCSI header on the motherboard in the second position in the chain. Again IIRC.

The "strata" setup requires termination resistors installed on the motherboard and no need for external termination while the "Y" setup has no termination resistors on the motherboard, has the HDD on one end of the cable, the motherboard header next and then further units up to the external SCSI port. The External SCSI port or, if external devices are connected, the farthest device; needs to be terminated for the HDD to function.

This is all off the top of my head so don't quote me. There were online topics which I have no hope of finding again.

Re the CMOS battery. As well as the RTC it holds the NVRAM memory. This stores HDD bootstrapping delays set up optionally by a tool available on Aminet. It's not normally necessary and the A3000 is reportedly fine without it.

On the rear of the machine is the VGA output 31khz from the scandoubler. If being used, you may need to adjust the trimmer pot with a non conductive tool for a stable picture. I have heard of re-capping issues affecting the doubler but haven't encountered that myself.

 As for the OS, it needs the same Workbench etc version as the Kickstart or you'll get errors. Libraries were apportioned varyingly between versions.