PRODUCT DESCRIPTION
This is a Texas Instruments TMX390Z51GF Prototype CPU- microprocessor, manufactured in 1991 in Japan.
The TMX prefix indicates a pre-production / experimental chip, making it highly collectible and rare in today’s market.
The package features a gold-plated ceramic body with a distinctive central cavity and surrounding bonding pads, typical for early engineering samples.
Such prototype CPUs were used internally at Texas Instruments and were rarely released to the public, making this an exceptional piece for vintage CPU collectors and semiconductor historians.
👉 Offered as-is, untested, for display, collection, or research purposes.
SPECIFICATIONS
Manufacturer: Texas Instruments (TI)
Model: TMX390Z51GF
Year: 1991
Origin: Japan
Type: Prototype / Experimental CPU
Package: Ceramic with gold-plated contacts
Condition: Used, untested, collectible
- Discover more rare processors in our Vintage Ceramic CPU Collection.









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