Replacement for 840758-691: Drop-In Alternatives We Stock
Looking for a replacement for the 840758-691 (840758-691 - HP 32GB 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 840758-691
| SKU | 840758-691 |
|---|---|
| Product | 840758-691 - HP 32GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module |
| Current price | $321.05 |
| Stock status | In Stock |
| Detail page | View 840758-691 › |
Drop-in replacements for 840758-691
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.
840758-191 - HP 32GB DDR4-2666MHz PC4-21300 ECC-Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module for ProLiant Gen10 Server
SKU: 840758-191
Price: $394.74
840758-C9S - HPE 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Dual Rank Memory Module
SKU: 840758-C9S
Price: $400.00
840759-691 - HP 64GB PC4-21300 DDR4-2666MHz ECC Registered CL19 LRDIMM 1.2V Quad-Rank Memory Module
SKU: 840759-691
Price: $629.47
840758-091 - HP 32GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x4 CL-19 288-Pin 1.2V DIMM Memory Module
SKU: 840758-091
Price: $271.58
P18958-B21 - HPE 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Dual Rank Memory Module
SKU: P18958-B21
Price: $289.47
881900-B21 - HP 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 881900-B21
Price: $299.33
P26034-001 - HPE 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Dual Rank Memory Module
SKU: P26034-001
Price: $299.33
Q2D32A - HP 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: Q2D32A
Price: $299.33
P26140-001 - HPE 32GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Dual Rank Memory Module
SKU: P26140-001
Price: $299.33
L09286-850 - HP 32GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module
SKU: L09286-850
Price: $299.33
846758-091 - HP 32GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module
SKU: 846758-091
Price: $299.33
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.