Replacement for 788321-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 788321-B21 (788321-B21 - HP 2.10GHz 9.60GT/s QPI 45MB L3 Cache Socket LGA2011-3 Intel Xeon E7-8870-V3 18-Cores Server Processor)? 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 788321-B21
| SKU | 788321-B21 |
|---|---|
| Product | 788321-B21 - HP 2.10GHz 9.60GT/s QPI 45MB L3 Cache Socket LGA2011-3 Intel Xeon E7-8870-V3 18-Cores Server Processor |
| Current price | $233.68 |
| Stock status | In Stock |
| Detail page | View 788321-B21 › |
Drop-in replacements for 788321-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.
788321-L21 - HP 2.10GHz 9.60GT/s QPI 45MB Last Level Cache Socket FCLGA2011 Intel Xeon E7-8870 V3 18 Core Processor Kit for DL580 G9
SKU: 788321-L21
Price: $189.47
802280-001 - HP 2.10GHz 9.60GT/s QPI 45MB L3 Cache Socket LGA2011-3 Intel Xeon E7-8870-V3 18-Cores Server Processor
SKU: 802280-001
Price: $11,949.26
845011-001 - HP 2.10GHz 9.60GT/s QPI 50MB L3 Cache Socket FCLGA2011 Intel Xeon E7-8870 V4 20 Core Processor (Tray part)
SKU: 845011-001
Price: $8,056.25
816647-B21 - HP 2.10GHz 9.60GT/s QPI 50MB L3 Cache Socket FCLGA2011 Intel Xeon E7-8870 V4 20 Core Processor (Tray part)
SKU: 816647-B21
Price: $8,336.25
834501-L21 - HP 2.10GHz 9.6GT/s QPI 50MB Cache Socket FCLGA2011 Intel Xeon E7-8870 V4 20-Core Processor
SKU: 834501-L21
Price: $9,540.21
816647-L21 - HP 2.10GHz 9.6GT/s QPI 50MB Cache Socket FCLGA2011 Intel Xeon E7-8870 V4 20-Core Processor
SKU: 816647-L21
Price: $10,494.24
834501-B21 - HP 2.10GHz 9.6GT/s QPI 50MB Cache Socket FCLGA2011 Intel Xeon E7-8870 V4 20-Core Processor
SKU: 834501-B21
Price: $11,065.99
780002-B21 - HP 2.30GHz 9.60GT/s QPI 45MB L3 Cache Socket FCLGA2011-3 Intel Xeon E5-2699v3 18-Core Processor for ProLiant DL360 Gen9 Server
SKU: 780002-B21
Price: $63.16
788366-001 - HP 2.50GHz 9.6GT/s QPI 45MB Last Level Cache Socket FCLGA2011 Intel Xeon E7-8890 V3 18-Core Processor
SKU: 788366-001
Price: $71.58
864653-001 - HP 2.30GHz 9.6GT/s QPI 45MB L3 Cache Socket FCLGA2011-3 Intel Xeon E5-2697 v4 18-Core Processor
SKU: 864653-001
Price: $89.47
858203-001 - HP 2.40GHz 9.6GT/s QPI 45MB Cache Socket FCLGA2011 Intel Xeon E7-8867 v4 18 Core Processor
SKU: 858203-001
Price: $89.47
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.