The PT-521/3 arrived at a time when VGA performance depended as much on memory bandwidth as clock speed. Its Cirrus Logic GD5422 used a 32-bit memory interface, giving it a useful performance advantage over earlier low-cost ISA VGA cards while retaining excellent DOS compatibility. It was intended for users who wanted a responsive Super VGA card without paying for a Windows accelerator, making it a common choice for 386 and early 486 systems.

Details

Manufacturer	Pine Technologies
Model	PT-521/3
Year	1994
Condition	Working
Reference	https://theretroweb.com/expansioncards/s/pine-technology-pt-521-3

Specs

Chip	CL-GD5422-75QC-A
Interface	16-bit ISA
Connector	VGA
Memory	1 MiB

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History

2026-08-07	cropped a photo
2026-07-29	flagged a photo as a reference image
2026-07-24	fetched a photo from the reference
2026-07-24	created