Replacement for 405040-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 405040-B21 (405040-B21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket LGA771 Intel Xeon 5050 Dual-Core Processor for ProLiant BL20p G4 Server)? 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 405040-B21
| SKU | 405040-B21 |
|---|---|
| Product | 405040-B21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket LGA771 Intel Xeon 5050 Dual-Core Processor for ProLiant BL20p G4 Server |
| Current price | $103.62 |
| Stock status | In Stock |
| Detail page | View 405040-B21 › |
Drop-in replacements for 405040-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.
405040-L21 - HP 3GHz 667MHz FSB 4MB L2 Cache Intel Xeon 5050 Dual Core Processor Kit for ProLiant BL20p G4 Server
SKU: 405040-L21
Price: $103.62
399955-001 - HP 3GHz 667MHz FSB 4MB L2 Cache Socket PGA-604 Intel Xeon 7040 Dual-Core Processor
SKU: 399955-001
Price: $71.58
399889-B21 - HP 3GHz 667MHz FSB 4MB L2 Cache Socket PGA-604 Intel Xeon 7040 Dual-Core Processor
SKU: 399889-B21
Price: $73.68
405176-003 - HP 2.66GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5030 2-Core Processor
SKU: 405176-003
Price: $78.43
411724-001 - HP 2.66GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5030 2-Core Processor
SKU: 411724-001
Price: $78.43
399889-L21 - HP 3GHz 667MHz FSB 4MB L2 Cache Socket PGA-604 Intel Xeon 7040 Dual-Core Processor
SKU: 399889-L21
Price: $82.42
399889-L22 - HP 3GHz 667MHz FSB 4MB L2 Cache Socket PGA-604 Intel Xeon 7040 Dual-Core Processor
SKU: 399889-L22
Price: $82.42
397336-B21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5050 2-Core Processor
SKU: 397336-B21
Price: $86.38
399532-L21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5050 2-Core Processor
SKU: 399532-L21
Price: $86.38
409158-L21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5050 2-Core Processor
SKU: 409158-L21
Price: $86.38
409400-L21 - HP 3.0GHz 667MHz FSB 4MB L2 Cache Socket PLGA771 Intel Xeon 5050 2-Core Processor
SKU: 409400-L21
Price: $86.38
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.