Description
Apple 820-0522-A Power Macintosh 7100 VRAM Video Card PDS Bt9055
This is a PDS (Processor Direct Slot) video expansion card designed for the Apple Power Macintosh 7100, a mid-range Macintosh workstation from the early 1990s. The card adds dedicated video memory and accelerated graphics capabilities via the Brooktree Bt9055 RAMDAC chipset, providing enhanced display output and rendering performance on compatible systems.
Specifications & What's Included
- Model: Apple 820-0522-A
- Interface: PDS (Processor Direct Slot)
- Graphics Processor / RAMDAC: Brooktree Bt9055 RAMDAC 100
- VRAM Configuration: 128K x 8 (128 kilobits × 8-bit configuration)
- Video Output: 15-pin D-Sub (DB-15) connector
- RAM Slot Color: Black (some units may have white RAM slot variants)
- Form Factor: PDS expansion card
- Manufactured: Singapore, 1993
- Includes: Card only — no cables, mounting brackets, or accessories included
Applications
Video expansion cards like the 820-0522-A were standard upgrades in Power Macintosh 7100 systems during the early 1990s, when users needed additional graphics memory or faster video rendering for professional applications. The PDS interface provided direct processor access, making it faster than standard NuBus expansion cards. The Bt9055 RAMDAC was a common choice for mid-range Macintosh graphics, capable of driving external displays at standard resolutions. This card type was used by graphics professionals, educational institutions, and technical users running early Mac OS and System 7.x, supporting applications ranging from design and CAD to video editing on vintage Macintosh systems.
This Apple 820-0522-A Power Macintosh 7100 VRAM video expansion card is being sold AS-IS for parts or repair. Due to the age of this vintage hardware, we have not been able to test it at our facility, and it is not guaranteed to be functional. The card may be suitable for parts, repair, or restoration by experienced technicians. Please review our photo set carefully and contact us with any questions before purchasing. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Apple Computer Inc. |
Model: |
820-0522-A |
MPN: |
820-0522-A |
Type: |
VRAM Expansion / Video Card |
SKU: |
23529 |
Interface: |
PDS (Processor Direct Slot) |
Compatible With: |
Apple Power Macintosh 7100 |
GPU / RAMDAC: |
Brooktree Bt9055 RAMDAC 100 |
VRAM Configuration: |
128K x 8 |
RAM Slot Color: |
Black (some units may have white) |
Connector: |
15-pin D-Sub (DB-15) video output |
Manufacturer: |
Apple Computer Inc. |
Year: |
1993 |
Country/Region of Manufacture: |
Singapore |
Form Factor: |
PDS Card |
Seller Notes: |
Card only. Not tested due to age. Sold as-is for parts or repair. |
Condition Notes: |
Apple 820-0522-A PM7100 video card sold AS-IS for parts or repair. Untested due to age; not guaranteed functional. Card only, no accessories included. |
Interface Type: |
PDS (Processor Direct Slot) |
Graphics Processor: |
Brooktree Bt9055 RAMDAC 100 |
Memory Type: |
VRAM |
Video Connector: |
15-pin D-Sub (DB-15) |
Manufactured: |
Singapore, 1993 |