Replacement for P18451-B21: Drop-In Alternatives We Stock
Looking for a replacement for the P18451-B21 (P18451-B21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module)? Pro Disk Network ships HP drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the P18451-B21
| SKU | P18451-B21 |
|---|---|
| Product | P18451-B21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module |
| Current price | $1,187.37 |
| Stock status | In Stock |
| Detail page | View P18451-B21 › |
Drop-in replacements for P18451-B21
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
P03053-1A1 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin RDIMM 1.2V Memory Module
SKU: P03053-1A1
Price: $605.26
P19045-B21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin RDIMM 1.2V Memory Module
SKU: P19045-B21
Price: $605.26
P14636-001 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin RDIMM 1.2V Memory Module
SKU: P14636-001
Price: $796.49
P19045-H21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin RDIMM 1.2V Memory Module
SKU: P19045-H21
Price: $796.49
P03054-191 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P03054-191
Price: $815.79
P12403-B21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P12403-B21
Price: $858.00
P03054-C91 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P03054-C91
Price: $858.00
P19044-H21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P19044-H21
Price: $858.00
P14637-001 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P14637-001
Price: $858.00
P00926-K21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P00926-K21
Price: $858.00
P13211-001 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P13211-001
Price: $1,071.58
P19044-B21 - HP 64GB DDR4-2933 MHz PC4-23466 ECC Registered CL21 288-Pin LRDIMM 1.2V Memory Module
SKU: P19044-B21
Price: $1,071.58
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.