DEC Alpha 21064
E440486
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| DEC Alpha 21064 canonical | 2 |
| Alpha 21064 | 1 |
| DEC Alpha 21064AA | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4425620 — 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 21064 Context triple: [DEC Alpha servers, basedOnProcessorFamily, DEC Alpha 21064]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Sun-3 workstation
The Sun-3 workstation is a line of 1980s UNIX-based computer workstations produced by Sun Microsystems, notable for using Motorola 68000-series processors and running the SunOS operating system.
-
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 21064 Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Sun-3 workstation
The Sun-3 workstation is a line of 1980s UNIX-based computer workstations produced by Sun Microsystems, notable for using Motorola 68000-series processors and running the SunOS operating system.
-
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 (44)
| Predicate | Object |
|---|---|
| instanceOf |
64-bit RISC microprocessor
ⓘ
microprocessor ⓘ |
| addressSpace | 64-bit virtual address space ⓘ |
| applicationDomain |
enterprise servers
ⓘ
high-performance computing ⓘ technical workstations ⓘ |
| architecture | Alpha ⓘ |
| category |
central processing unit
ⓘ
microprocessor ⓘ |
| clockFrequencyRange | around 150 MHz ⓘ |
| codeName | EV4 ⓘ |
| designedBy | Digital Equipment Corporation ⓘ |
| designStyle | RISC ⓘ |
| endianess | little-endian ⓘ |
| familyGeneration | first-generation Alpha implementation ⓘ |
| floatingPointSupport | integrated floating-point unit ⓘ |
| instructionSetArchitecture | Alpha ISA ⓘ |
| integerUnit | integrated integer unit ⓘ |
| introductionDate | 1992 ⓘ |
| manufacturer | Digital Equipment Corporation ⓘ |
| marketAvailability | early 1990s ⓘ |
| marketPosition | high-end ⓘ |
| marketSegment |
departmental servers
ⓘ
professional workstations ⓘ |
| notableFor |
being one of the first commercially available 64-bit CPUs
ⓘ
high performance for its time ⓘ |
| partOf |
DEC Alpha family
ⓘ
linked to:
DEC Alpha
|
| pipelineType | superscalar ⓘ |
| predecessor |
DEC Alpha 21064AA
ⓘ
linked to:
DEC Alpha 21064
|
| successor | DEC Alpha 21164 ⓘ |
| supports |
32-bit compatibility mode
ⓘ
64-bit integer arithmetic ⓘ 64-bit virtual memory ⓘ IEEE floating-point ⓘ out-of-order-like performance via deep pipelining ⓘ superscalar execution ⓘ |
| technologyNode | CMOS ⓘ |
| usedIn |
DEC Alpha AXP systems
ⓘ
linked to:
DEC Alpha
servers ⓘ workstations ⓘ |
| usedWith |
DEC OSF/1
ⓘ
linked to:
OSF/1
OpenVMS ⓘ
linked to:
VMS operating system
UNIX operating systems ⓘ |
| 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 21064 Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: DEC Alpha 21064
linked to: DEC Alpha 21064