Replacement for 500666-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 500666-B21 (500666-B21 - HP DDR3 16GB RAM 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 500666-B21
| SKU | 500666-B21 |
|---|---|
| Product | 500666-B21 - HP DDR3 16GB RAM Memory |
| Current price | $65.26 |
| Stock status | In Stock |
| Detail page | View 500666-B21 › |
Drop-in replacements for 500666-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.
500666-B23 - HP 16GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM Quad Rank Memory Module
SKU: 500666-B23
Price: $109.57
500666-S21 - HP 16GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module
SKU: 500666-S21
Price: $109.57
500666-S21-RF - HP 16GB PC3-8500 DDR3-1066MHz ECC Registered CL7 RDIMM Quad-Rank Memory Module
SKU: 500666-S21-RF
Price: $109.57
HP 500666-B21#0D1 16GB PC3-8500 DDR3-1066MHz ECC Registered CL7 RDIMM Quad-Rank Memory Module
SKU: 500666-B21-0D1
Price: $109.57
500666-B24 - HP 16GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM Quad Rank Memory Module
SKU: 500666-B24
Price: $109.57
500666-B21U - HP 16GB PC3-8500 DDR3-1066MHz ECC Registered CL7 RDIMM Quad-Rank Memory Module
SKU: 500666-B21U
Price: $109.57
747093-S01 - HP ProLiant DL360e G8 Intel Xeon E5-2420 v2 6-Core 2.20GHz CPU 16GB DDR3 RAM Server
SKU: 747093-S01
Price: $457.89
696172-S01 - HP ProLiant BL465c G8 AMD Opteron 6380 16-Core 2.5GHz CPU 16GB DDR3 RAM Blade Server System
SKU: 696172-S01
Price: $591.58
656764-S01 - HP ProLiant ML350 G6 S-Buy- 2x Intel Xeon 6-Core E5645/2.4GHz 24MB L3 Cache 16GB DDR3 Ram Dvd
SKU: 656764-S01
Price: $861.05
595241-001 - HP ProLiant DL580 G7 Base-Model 2x Intel Xeon Hc E7520/1.86 GHz 16GB Ram DDR3 SDRAM SAS/SATA Dvd Rom Gigabit Ethernet 4u Rack Server
SKU: 595241-001
Price: $889.47
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.