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500660-B21 ✓ Verified by PartsTable
HP · 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: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW
HP 4GB (1x4GB) 4RX8 PC3-8500R-7 DDR3-1066MHZ 1.5V

A Hewlett Packard equivalent 4GB Registered Quad Rank Low Power DIMM (PC3-8500R) from Hypertec. Key specifications include Rank: Dual Rank (2R), Speed: DDR4-2933, Voltage: 1.2V, Capacity: 32GB, Form Factor: RDIMM, Organization: x4. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-582-9780, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY RDIMM 500660-B21
NSN: 7025-01-582-9780
FSC: 7025
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
RankDual Rank (2R)
SpeedDDR4-2933
Voltage1.2V
Capacity32GB
Form FactorRDIMM
Organizationx4
NSN7025-01-582-9780
COMPONENT DIAGRAM
ECC 4GB 2Rx4 PC3 1066MHz RDIMM HP NOTCH ~133.35 mm DDR3 RDIMM | 4GB | 1066MHz | PC3 Notch position = DDR3 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR3 RDIMM PN 500660-B21 MFR HP 4GB 1066MHz
KEY FEATURES
DDR3 Interface
4GB Capacity
1066MHz Speed
DDR3 Memory
BODY LENGTH: 5.250 INCHES NOMINAL IN
BODY WIDTH: 1.180 INCHES NOMINAL IN
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 (FLIS)
BODY LENGTH5.250 INCHES NOMINAL IN
SPECIAL FEATURES4GB MEMORY; 1X4GB MODULES; DDR3 SDRAM; 1066MHZ MEMORY SPEED; 240 PIN DIMM; MEMORY STANDARD DDR3-1066/PC3-8500 GB
BODY WIDTH1.180 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYLOW POWER DRAM MEMORY KIT
BODY LENGTH5.250 INCHES NOMINAL IN
SPECIAL FEATURES4GB MEMORY; 1X4GB MODULES; DDR3 SDRAM; 1066MHZ MEMORY SPEED; 240 PIN DIMM; MEMORY STANDARD DDR3-1066/PC3-8500 GB
BODY WIDTH1.180 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYLOW POWER DRAM MEMORY KIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
501535-001Compatible
HP 4Gb PC3L-8500R 1066Mhz ECC REG QR x8 CAS-7 LV DIMM - Intel
compatible
500204-061Compatible
HP 4Gb PC3L-8500R 1066Mhz ECC REG QR x8 CAS-7 LV DIMM - Intel
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
500204-061SUBSTITUTE
HP 4Gb PC3L-8500R 1066Mhz ECC REG QR x8 CAS-7 LV DIMM - Intel
HPE
501535-001SUBSTITUTE
HP 4Gb PC3L-8500R 1066Mhz ECC REG QR x8 CAS-7 LV DIMM - Intel
HPE
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FREQUENTLY ASKED QUESTIONS
What is 500660-B21?
500660-B21 is a HP 4GB (1x4gb) 4Rx8 Pc3-8500r-7 DDR3-1066MHZ 1.5V manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 500660-B21?
There are 2 known substitutes for 500660-B21: 501535-001, 500204-061. Substitute compatibility should be verified for your specific system.
What is the NSN for 500660-B21?
500660-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-582-9780. This indicates validated use in U.S. government and defense supply chains.
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