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500659-B21 — Memory Specs & Substitutes

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HPE · DIMM
WHAT YOU NEED TO KNOW
2Rx4 = Dual Rank ×4 chip width (standard server) RDIMM = Registered (servers) | LRDIMM = Load-Reduced (max density)
DDR3 ≠ DDR4 ≠ DDR5 — physically incompatible (notch position)
PRODUCT OVERVIEW

HP 4Gb PC3-10600R 1333Mhz ECC REG DR x4 CAS-9 (256Mx4) DIMM - Intel. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
500659-B21
SPECIFICATIONS
Part Number500659-B21
ManufacturerHPE
Capacity4GB
Speed1333MHz
COMPONENT DIAGRAM
ECC 4GB 2Rx4 PC4 1333MHz RDIMM HPE NOTCH ~133.35 mm DDR4 RDIMM | 4GB | 1333MHz | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 500659-B21 MFR HPE 4GB 1333MHz
KEY FEATURES
•
4GB Capacity
•
1333MHz Speed
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
500658-B21Compatible
HP 4Gb PC3-10600R 1333Mhz ECC REG DR x4 CAS-9 DIMM - Intel
compatible
501534-001Compatible
HP 4Gb PC3-10600R 1333Mhz ECC REG DR x4 CAS-9 (256Mx4) DIMM - Intel
compatible
500203-061Compatible
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 (256Mx4) DIMM - Intel
compatible
500203-361Compatible
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 (256Mx4) DIMM - Intel
compatible
500203-561Compatible
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 (256Mx4) DIMM - Intel
compatible
536889-001Compatible
HP 4Gb PC3-10600R 1333Mhz ECC REG DR CAS-9 DIMM - Intel
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 7
FX621AASUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
500203-061SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
500203-361SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
500203-561SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
500658-B21SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
501534-001SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
536889-001SUBSTITUTE
HP 4Gb PC3-10600R 1333Mhz DR x4 CAS-9 DIMM - Intel
HPE
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FREQUENTLY ASKED QUESTIONS
What is 500659-B21?
500659-B21 is a HP 4Gb PC3-10600R 1333Mhz ECC REG DR x4 CAS-9 (256Mx4) DIMM - Intel manufactured by HPE.
What parts can replace 500659-B21?
There are 8 known substitutes for 500659-B21: 500658-B21, 501534-001, 500203-061 and 5 more. Substitute compatibility should be verified for your specific system.
Is 500659-B21 still available?
500659-B21 is currently Unknown.
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Last verified: September 2026