Like the desktop variant it is based upon, the A3000T has a CPU FAST slot which allows for processor upgrades. Later models were offered with a 68040 CPU in this slot, and third-party upgrades could be used to add a PowerPC processor.
The A3000T has a variety of drive bays — two 3.5-inch drives; one 5.25-inch half-height drive, mounted horizontally; and two 5.25-inch half-height drives, mounted vertically. Inside, behind these drives, there is space for two more internal 5.25-inch half-height drives. The available drive bays make it possible to internally install up to seven devices in the A3000T.
The A3000T's specifications closely resemble the desktop-cased Amiga 3000, but the motherboard has been heavily redesigned. As a result, the expansion slot layout is more like the Amiga 2000's with five Zorro III slots, one inline with the video slot, and four 16-bit ISA slots (passive), two of which are online with Zorro slots.
The Amiga 3000's retail price could exceed $5000 at introduction, depending on configuration. As a result of its high price and poor marketing, the machine did not sell in great numbers.