DEC Alpha 21164
E441939
The DEC Alpha 21164 is a 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, known for its high performance and use in advanced workstations and servers in the mid-1990s.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Alpha 21164 | 1 |
| DEC Alpha 21164 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4425621 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: DEC Alpha 21164 Context triple: [DEC Alpha servers, basedOnProcessorFamily, DEC Alpha 21164]
-
A.
DEC Alpha 21064
The DEC Alpha 21064 is a 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, notable as one of the first commercially available 64-bit CPUs and used in high-performance workstations and servers in the early 1990s.
-
B.
Sun-4 workstation
The Sun-4 workstation is a line of SPARC-based UNIX workstations from Sun Microsystems that succeeded the Motorola 680x0-based Sun-3 series and became a widely used engineering and server platform in the late 1980s and early 1990s.
-
C.
Intel i860
The Intel i860 was a high-performance RISC microprocessor from the late 1980s and early 1990s, notable for its VLIW-like architecture and integrated floating-point and graphics capabilities aimed at workstations and supercomputers.
-
D.
Itanium
Itanium is a 64-bit server processor architecture developed by Intel (with early collaboration from HP) that was designed for high-end enterprise and technical computing but ultimately saw limited adoption and was discontinued.
-
E.
Amdahl
Amdahl is the surname of Gene Amdahl, a pioneering computer architect best known for formulating Amdahl's Law and contributing to the design of IBM mainframe systems.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: DEC Alpha 21164 Target entity description: The DEC Alpha 21164 is a 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, known for its high performance and use in advanced workstations and servers in the mid-1990s.
-
A.
DEC Alpha 21064
The DEC Alpha 21064 is a 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, notable as one of the first commercially available 64-bit CPUs and used in high-performance workstations and servers in the early 1990s.
-
B.
Sun-4 workstation
The Sun-4 workstation is a line of SPARC-based UNIX workstations from Sun Microsystems that succeeded the Motorola 680x0-based Sun-3 series and became a widely used engineering and server platform in the late 1980s and early 1990s.
-
C.
Intel i860
The Intel i860 was a high-performance RISC microprocessor from the late 1980s and early 1990s, notable for its VLIW-like architecture and integrated floating-point and graphics capabilities aimed at workstations and supercomputers.
-
D.
Itanium
Itanium is a 64-bit server processor architecture developed by Intel (with early collaboration from HP) that was designed for high-end enterprise and technical computing but ultimately saw limited adoption and was discontinued.
-
E.
Amdahl
Amdahl is the surname of Gene Amdahl, a pioneering computer architect best known for formulating Amdahl's Law and contributing to the design of IBM mainframe systems.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
64-bit microprocessor
ⓘ
RISC microprocessor ⓘ microprocessor ⓘ |
| alsoKnownAs |
Alpha 21164
NERFINISHED
ⓘ
EV5 NERFINISHED ⓘ |
| applicationDomain |
enterprise servers
ⓘ
high-end technical computing ⓘ |
| architecture | Alpha ⓘ |
| belongsToSeries | Alpha 21064–21164–21264 line NERFINISHED ⓘ |
| cacheType | split L1 instruction and data caches ⓘ |
| cpuFamily | Alpha 21064 family ⓘ |
| designedBy | Digital Equipment Corporation NERFINISHED ⓘ |
| designType | RISC ⓘ |
| executionUnits |
floating-point units
ⓘ
multiple integer units ⓘ |
| familyGeneration | second-generation Alpha microprocessor ⓘ |
| hasSuccessor | DEC Alpha 21264 NERFINISHED ⓘ |
| instructionSetArchitecture | Alpha ISA NERFINISHED ⓘ |
| intendedUse |
servers
ⓘ
workstations ⓘ |
| introductionPeriod | mid-1990s ⓘ |
| introductionYear | 1995 ⓘ |
| manufacturer | Digital Equipment Corporation NERFINISHED ⓘ |
| marketPosition | high-end RISC CPU ⓘ |
| notableFeature |
aggressive superscalar design for its time
ⓘ
large on-chip caches for mid-1990s ⓘ |
| notableFor | high performance ⓘ |
| onChipCache |
data cache
ⓘ
instruction cache ⓘ secondary cache ⓘ |
| partOfFamily | DEC Alpha NERFINISHED ⓘ |
| pipelineType | superscalar ⓘ |
| successorOf | DEC Alpha 21064 NERFINISHED ⓘ |
| supports |
64-bit integer operations
ⓘ
64-bit virtual address space ⓘ |
| targetOperatingSystems |
Digital UNIX
NERFINISHED
ⓘ
OpenVMS NERFINISHED ⓘ Windows NT on Alpha NERFINISHED ⓘ |
| technologyEra | 1990s ⓘ |
| usedFor |
database servers
ⓘ
engineering applications ⓘ scientific computing ⓘ |
| usedIn |
Digital servers
ⓘ
Digital workstations ⓘ |
| vendor | Digital Equipment Corporation NERFINISHED ⓘ |
| wordSize | 64-bit ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: DEC Alpha 21164 Description of subject: The DEC Alpha 21164 is a 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, known for its high performance and use in advanced workstations and servers in the mid-1990s.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Alpha 21164