Replacement for 404854-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 404854-B21 (404854-B21 - HP 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory)? 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 404854-B21
| SKU | 404854-B21 |
|---|---|
| Product | 404854-B21 - HP 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Quad Rank Memory |
| Current price | $267.53 |
| Stock status | In Stock |
| Detail page | View 404854-B21 › |
Drop-in replacements for 404854-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.
483403-B21 - HP 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Dual Rank Memory
SKU: 483403-B21
Price: $128.42
CT582705 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant BL 460c
SKU: CT582705
Price: $142.07
CT730097 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant DL580 G5
SKU: CT730097
Price: $142.07
CT973520 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant BL460c G5 Server Blade
SKU: CT973520
Price: $142.07
CT1007603 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant BL460c Server Blade
SKU: CT1007603
Price: $142.07
CT582715 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant BL480c
SKU: CT582715
Price: $142.07
CT746907 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant BL680c G5 Server Blade
SKU: CT746907
Price: $142.07
CT896710 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant DL160 G5p
SKU: CT896710
Price: $142.07
CT788678 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant xw460c Blade Workstation
SKU: CT788678
Price: $142.07
CT570429 - Crucial 8GB Kit (2 x 4GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Memory Upgrade for HP - Compaq ProLiant DL360 G5
SKU: CT570429
Price: $142.07
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.