Replacement for 878658-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 878658-B21 (878658-B21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core 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 878658-B21
| SKU | 878658-B21 |
|---|---|
| Product | 878658-B21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor |
| Stock status | In Stock |
| Detail page | View 878658-B21 › |
Drop-in replacements for 878658-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.
875729-001 - HP 2.00GHz 10.4GT/s UPI 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 875729-001
Price: $173.68
872123-B21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 872123-B21
Price: $229.47
872123-L21 - HP 2.00GHz 10.4GT/s UPI 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 872123-L21
Price: $229.47
869088-L21 - HP 2.00GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor for ProLiant DL380 G10 Server
SKU: 869088-L21
Price: $261.05
875958-B21 - HP Intel Xeon-Platinum 8164 26-Core 2.00GHz DDR4 35.75MB L3 Cache Socket FCLGA3647 Processor
SKU: 875958-B21
Price: $271.58
878152-L21 - HP 2.40GHz 3 UPI Links 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor Kit for ProLiant DL580 Gen10
SKU: 878152-L21
Price: $282.11
878152-B21 - HP 2.40GHz 3 UPI Links 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor Kit for ProLiant DL580 Gen10
SKU: 878152-B21
Price: $282.11
870976-L21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 870976-L21
Price: $282.11
840383-B21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 840383-B21
Price: $282.11
840383-L21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 840383-L21
Price: $282.11
870976-B21 - HP 2.0GHz 35.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8164 26-Core Processor
SKU: 870976-B21
Price: $294.74
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.