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Technical Data Sheet

187419-B21 — Memory Specs & Substitutes

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HPE · MEMORY · RDIMM
WHAT YOU NEED TO KNOW
Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

Memory is one of the most critical components in your server, and one of the easiest to upgrade to quickly enhance and improve overall system performance.The dependence on industry standard servers to run memory-intensive applications is pushing the memory capacity of servers to new levels. For server applications, memory modules and other server components must withstand almost non-stop exposure to elements such as heat and electricity. The slightest defect can become a problem resulting in server crashes and data loss for multiple users.

As server memory capacities increase, so does the likelihood of memory errors that can corrupt data and cause servers to crash. This part is cataloged in the Federal Logistics Information System under NSN 5962-01-542-7931, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MEMORY→ RDIMM→ 187419-B21
NSN: 5962-01-542-7931
FSC: 5962
CAGE: 65685 — COMPAQ COMPUTER CORP. (USA)
SPECIFICATIONS
memory_capacity2 X 512 MB MB
memory_device_typeRAM
end_item_identificationSERVER, ML570R
terminal_type_and_quantity184 PIN
part_name_assigned_by_controlling_agencySDRAM, PC1600, 1GB GB
NSN5962-01-542-7931
COMPONENT DIAGRAM
ECC 1GB 2Rx4 PC4 — RDIMM HPE NOTCH ~133.35 mm DDR4 RDIMM | 1GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 187419-B21 MFR HPE 1GB —
KEY FEATURES
•
1GB Capacity
•
MEMORY CAPACITY: 2 X 512 MB MB
•
TERMINAL TYPE AND QUANTITY: 184 PIN
•
MEMORY DEVICE TYPE: RAM
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
TECHNICAL CHARACTERISTICS
MEMORY CAPACITY2 X 512 MB MB
END ITEM IDENTIFICATIONSERVER, ML570R
TERMINAL TYPE AND QUANTITY184 PIN
PART NAME ASSIGNED BY CONTROLLING AGENCYSDRAM, PC1600, 1GB GB
MEMORY DEVICE TYPERAM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
SN13974Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
PS73338-1Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
US5430JSame_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
619293-2Same_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
9622DMSame_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
MC948LSame_fscGOVERNMENT REGISTRY
same_fsc cross-reference
same_fsc
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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HP 4GB FULLY BUFFERED DIMM PC2-5300 2X2GB DDR2 MEMORY KIT
A3398-69004
Texture memory board - Mounted on the VISUALIZE-48XP frame buffer and geometry accelerator board
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FREQUENTLY ASKED QUESTIONS
What is 187419-B21?
187419-B21 is a COMPAQ 1GB 1X1GB PC1600 ECC DIMM manufactured by HPE. It is classified as a MEMORY (RDIMM).
What parts can replace 187419-B21?
There are 15 known substitutes for 187419-B21: SN13974, PS73338-1, US5430J and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 187419-B21?
187419-B21 is cataloged in the Federal Logistics Information System under NSN 5962-01-542-7931. This indicates validated use in U.S. government and defense supply chains.
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