Replacement for 838085-K21: Drop-In Alternatives We Stock
Looking for a replacement for the 838085-K21 (838085-K21 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-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 838085-K21
| SKU | 838085-K21 |
|---|---|
| Product | 838085-K21 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory Module |
| Current price | $709.63 |
| Stock status | In Stock |
| Detail page | View 838085-K21 › |
Drop-in replacements for 838085-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.
838085-H21 - HP 64GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin LRDIMM 1.2V Memory Module
SKU: 838085-H21
Price: $709.63
838085-B21 - HP 64GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin Load Reduced DIMM 1.2V Quad Rank Memory Module
SKU: 838085-B21
Price: $629.47
P18959-B21 - HPE 64GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin LRDIMM 1.2V Quad Rank Memory Module
SKU: P18959-B21
Price: $531.58
Z5K41AV - HP 1.5TB Kit (24 x 64GB) PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory
SKU: Z5K41AV
Price: $583.12
840759-691 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory Module
SKU: 840759-691
Price: $629.47
832800-201 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 Load Reduced LRDIMM 1.2V Quad-Rank Memory Module
SKU: 832800-201
Price: $709.63
8155101-B21 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory Module
SKU: 8155101-B21
Price: $709.63
815101R-B21 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory Module
SKU: 815101R-B21
Price: $709.63
P28223-B21 - HPE 64GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin LRDIMM 1.2V Quad Rank Memory Module
SKU: P28223-B21
Price: $2,542.11
Z5K52AV - HP 384GB Kit (6 x 64GB) PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory
SKU: Z5K52AV
Price: $3,973.95
Z5K51AV - HP 384GB Kit (6 x 64GB) PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory
SKU: Z5K51AV
Price: $3,973.95
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.