DEC Alpha
E805880
DEC Alpha is a 64-bit RISC microprocessor architecture developed by Digital Equipment Corporation in the early 1990s, known for its high performance and use in workstations and servers.
All labels observed (1)
| Label | Occurrences |
|---|---|
| DEC Alpha canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9532777 — 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 Context triple: [Alpha architecture, alsoKnownAs, DEC Alpha]
-
A.
DEC Alpha 21264
The DEC Alpha 21264 is a high-performance 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, designed for advanced server and workstation applications in the late 1990s.
-
B.
DEC Alpha 21164
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.
-
C.
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.
-
D.
DEC Alpha servers
DEC Alpha servers were high-performance 64-bit RISC-based computer systems developed by Digital Equipment Corporation, widely used in the 1990s for demanding enterprise and internet applications.
-
E.
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.
- 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 Target entity description: DEC Alpha is a 64-bit RISC microprocessor architecture developed by Digital Equipment Corporation in the early 1990s, known for its high performance and use in workstations and servers.
-
A.
DEC Alpha 21264
The DEC Alpha 21264 is a high-performance 64-bit RISC microprocessor from Digital Equipment Corporation’s Alpha family, designed for advanced server and workstation applications in the late 1990s.
-
B.
DEC Alpha 21164
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.
-
C.
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.
-
D.
DEC Alpha servers
DEC Alpha servers were high-performance 64-bit RISC-based computer systems developed by Digital Equipment Corporation, widely used in the 1990s for demanding enterprise and internet applications.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
64-bit architecture
ⓘ
RISC architecture ⓘ microprocessor ⓘ microprocessor architecture ⓘ |
| abbreviation | Alpha ⓘ |
| addressSpace | 64-bit virtual address space (with evolving implemented width) ⓘ |
| alsoKnownAs | Alpha AXP NERFINISHED ⓘ |
| architectureType | RISC ⓘ |
| bitness | 64 ⓘ |
| commercialStatus | discontinued ⓘ |
| designedFor | high-performance computing ⓘ |
| developer | Digital Equipment Corporation NERFINISHED ⓘ |
| discontinuationAnnouncedInYear | 2001 ⓘ |
| discontinuedBy | Hewlett-Packard NERFINISHED ⓘ |
| endianess | little-endian ⓘ |
| fabricationTechnology | CMOS ⓘ |
| firstImplementation | DECchip 21064 GENERATED ⓘ |
| followedBy |
EV5
ⓘ
EV6 NERFINISHED ⓘ EV7 NERFINISHED ⓘ |
| implementsArchitecture | DEC Alpha NERFINISHED ⓘ |
| influenced | later 64-bit RISC designs ⓘ |
| intendedSuccessorOf |
MIPS-based DEC systems
ⓘ
VAX NERFINISHED ⓘ |
| introducedInYear | 1992 ⓘ |
| laterOwnedBy |
Compaq
NERFINISHED
ⓘ
Hewlett-Packard NERFINISHED ⓘ |
| marketedBy | Digital Equipment Corporation NERFINISHED ⓘ |
| notableFeature |
designed for high clock frequency scalability
ⓘ
large register file ⓘ simple, clean instruction set ⓘ very long pipeline for high clock speeds ⓘ |
| primaryMarket |
enterprise servers
ⓘ
technical workstations ⓘ |
| registerFileType | load-store architecture ⓘ |
| supports |
out-of-order execution
ⓘ
pipelining ⓘ speculative execution ⓘ superscalar execution ⓘ virtual memory ⓘ |
| usedIn |
servers
ⓘ
supercomputers ⓘ workstations ⓘ |
| usedWithOperatingSystem |
Linux
NERFINISHED
ⓘ
OpenVMS NERFINISHED ⓘ Tru64 UNIX NERFINISHED ⓘ Windows NT NERFINISHED ⓘ various BSD variants ⓘ |
| 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 Description of subject: DEC Alpha is a 64-bit RISC microprocessor architecture developed by Digital Equipment Corporation in the early 1990s, known for its high performance and use in workstations and servers.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.