And the followup upgrading video.
Not a new video, but seems appropriate to the crowd here.
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This site has the specs and price of the AT ($6000, 286 at 6MHz or 8MHz, 256k typical RAM, 20MB+ of HDD.)
Here’s the 1984 announcement text, from this site:
The IBM Personal Computer AT is designed for professional applications, office environments, and increased personal productivity. It includes many advanced technology features previously not available in IBM Personal Computers: increased performance, advanced microprocessor, high capacity diskette drives, high capacity fixed disk drives, large memory capacity, and advanced co-processor. The 5170 provides compatibility with existing hardware and software products for the IBM Personal Computer family.
HIGHLIGHTS
- Performs more than two times faster than current members of the IBM Personal Computer family
- Based on high-performance Intel 80286 microprocessor, compatible with the IBM Personal Computer family
- Includes 1.2Mb high-capacity diskette drives
- Allows 20Mb fixed disk drives
- Contains a standard combination fixed disk and diskette adapter
- Provides 512Kb memory capacity on the system board
- Offers a combination Serial (Asynchronous)/Parallel (Printer) Adapter
- Allows workstation growth with eight I/O expansion slots
- Includes an improved keyboard
- Includes a clock/calendar with battery backup
- Provides improved security capability with a standard keylock
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