PartsTable
Technical Data Sheet
PartsTable / MEMORY / P20503-001

P20503-001 — Memory Specs & Substitutes

✓ 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 32GB (1X32GB) DUAL RANK X4 DDR4-3200 CAS-22-22-22 RDIMM

HP 32GB (1X32GB) DUAL RANK X4 DDR4-3200 CAS-22-22-22 RDIMM. 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→ P20503-001
SPECIFICATIONS
Part NumberP20503-001
ManufacturerHP
InterfaceDDR4
Capacity32GB
COMPONENT DIAGRAM
ECC 32GB 2Rx4 PC4 — RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | 32GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN P20503-001 MFR HP 32GB —
KEY FEATURES
•
DDR4 Interface
•
32GB Capacity
•
DDR4 RDIMM
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 5
P07646-B21Compatible
HP 32GB Pc4-3200AA-R ECC Reg Dr X4 Cas-22 Dimm - AMD - G10
compatible
P07646-H21Compatible
HP 32GB Pc4-3200AA-R ECC Reg Dr X4 Cas-22 Dimm - AMD - G10
compatible
P07646-K21Compatible
HP 32GB Pc4-3200AA-R ECC Reg Dr X4 Cas-22 Dimm - AMD - G10
compatible
P07646-X21Compatible
HP 32GB Pc4-3200AA-R ECC Reg Dr X4 Cas-22 Dimm - AMD - G10
compatible
P11444-191Compatible
HP 32GB Pc4-3200AA-R ECC Reg Dr X4 Cas-22 Dimm - AMD - G10
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 5
P07646-B21SUBSTITUTE
HP 32Gb PC4-3200AA-R ECC REG DR x4 CAS-22 DIMM - AMD - G10
HPE
P07646-H21SUBSTITUTE
HP 32Gb PC4-3200AA-R ECC REG DR x4 CAS-22 DIMM - AMD - G10
HPE
P07646-K21SUBSTITUTE
HP 32Gb PC4-3200AA-R ECC REG DR x4 CAS-22 DIMM - AMD - G10
HPE
P07646-X21SUBSTITUTE
HP 32Gb PC4-3200AA-R ECC REG DR x4 CAS-22 DIMM - AMD - G10
HPE
P11444-191SUBSTITUTE
HP 32Gb PC4-3200AA-R ECC REG DR x4 CAS-22 DIMM - AMD - G10
HPE
Ready to buy P20503-001?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is P20503-001?
P20503-001 is a HP 32GB (1x32gb) Dual Rank X4 DDR4-3200 Cas-22-22-22 RDIMM manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace P20503-001?
There are 5 known substitutes for P20503-001: P07646-B21, P07646-H21, P07646-K21 and 2 more. Substitute compatibility should be verified for your specific system.
Is P20503-001 still available?
P20503-001 is currently Unknown.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — P20503-001

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: August 2026