Replacement for 660666-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 660666-B21 (660666-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for HP ProLiant DL360e Gen8 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 660666-B21
| SKU | 660666-B21 |
|---|---|
| Product | 660666-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for HP ProLiant DL360e Gen8 Server |
| Current price | $147.37 |
| Stock status | In Stock |
| Detail page | View 660666-B21 › |
Drop-in replacements for 660666-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.
660666-L21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor
SKU: 660666-L21
Price: $147.37
676949-001 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for ProLiant Gen8 Servers
SKU: 676949-001
Price: $96.84
693158-001 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for HP ProLiant Gen8 Servers
SKU: 693158-001
Price: $127.97
661134-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for HP ProLiant DL380e Gen8 Server
SKU: 661134-B21
Price: $147.37
740885-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor Upgrade
SKU: 740885-B21
Price: $212.32
661134-L21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor
SKU: 661134-L21
Price: $244.76
667422-L21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for ProLiant BL420c Gen8 Server
SKU: 667422-L21
Price: $254.46
667422-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for ProLiant BL420c Gen8 Server
SKU: 667422-B21
Price: $254.46
665864-L21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor
SKU: 665864-L21
Price: $406.50
665864-B21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor for HP ProLiant ML350e Gen8 Server
SKU: 665864-B21
Price: $406.50
660666RB21 - HP 1.80GHz 6.40GT/s QPI 10MB L3 Cache Socket LGA1356 Intel Xeon E5-2403 Quad-Core Processor
SKU: 660666RB21
Price: $464.57
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.