Replacement for 838089-K21: Drop-In Alternatives We Stock
Looking for a replacement for the 838089-K21 (838089-K21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank 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 838089-K21
| SKU | 838089-K21 |
|---|---|
| Product | 838089-K21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module |
| Current price | $196.91 |
| Stock status | In Stock |
| Detail page | View 838089-K21 › |
Drop-in replacements for 838089-K21
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.
838089-B21 - HP 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 838089-B21
Price: $254.74
838089-H21 - HP 16GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: 838089-H21
Price: $186.59
835958-B21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 835958-B21
Price: $186.59
833089-B21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 833089-B21
Price: $186.59
832796-B21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 832796-B21
Price: $186.59
840756-001 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 840756-001
Price: $186.59
840756-K91 - HPE 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 840756-K91
Price: $186.59
840756-091U - HPE 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 840756-091U
Price: $186.59
838089R-B21 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module
SKU: 838089R-B21
Price: $186.59
840766-001 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 840766-001
Price: $186.59
840756-291 - HP 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM Memory Module
SKU: 840756-291
Price: $186.59
835955R-B21 - HP 16GB PC4-21300 DDR4-2666Mhz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory
SKU: 835955R-B21
Price: $186.59
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.