Replacement for 1818-8458: Drop-In Alternatives We Stock
Looking for a replacement for the 1818-8458 (1818-8458 - HP 512MB PC800 800MHz ECC 184-Pin RDRAM RIMM 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 1818-8458
| SKU | 1818-8458 |
|---|---|
| Product | 1818-8458 - HP 512MB PC800 800MHz ECC 184-Pin RDRAM RIMM Memory Module |
| Current price | $326.00 |
| Stock status | In Stock |
| Detail page | View 1818-8458 › |
Drop-in replacements for 1818-8458
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.
D9520A - HP 512MB Kit (2 X 256MB) RDRAM-800MHz PC800 ECC 184-Pin RIMM Rambus Memory
SKU: D9520A
Price: $147.86
20-1E17B-01 - HP 512MB PC800 800MHz non-ECC 184-Pin RDRAM RIMM Memory Module
SKU: 20-1E17B-01
Price: $182.93
D9520-69001 - HP 512MB Kit (2 X 256MB) Rambus 800MHz PC-800 ECC 184-Pin RDRAM RIMM Memory
SKU: D9520-69001
Price: $283.34
239067-001 - HP 512MB DDR-800MHz PC800 ECC Rambus RDRAM 184-Pin RIMM Memory Module for EVO W6000 / W8000 Workstations
SKU: 239067-001
Price: $374.59
D9520-69010 - HP 512MB Kit (2 X 256MB) RDRAM-800MHz PC800ECC 184-Pin RIMM Memory
SKU: D9520-69010
Price: $147.86
18187746I - HP 64MB PC800 RDRAM-800MHz ECC 45ns Rambus 184-Pin RIMM Memory Module
SKU: 18187746I
Price: $83.88
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.