Replacement for 840397-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 840397-B21 (840397-B21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor for DL560 Gen10 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 840397-B21
| SKU | 840397-B21 |
|---|---|
| Product | 840397-B21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor for DL560 Gen10 Server |
| Current price | $12,355.79 |
| Stock status | In Stock |
| Detail page | View 840397-B21 › |
Drop-in replacements for 840397-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.
840397-L21 - HP 3.00GHz 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor
SKU: 840397-L21
Price: $12,355.79
875956-L21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor
SKU: 875956-L21
Price: $12,355.79
869090-B21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor for DL380 Gen10 Server
SKU: 869090-B21
Price: $12,355.79
869090-L21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor for DL380 Gen10 Server
SKU: 869090-L21
Price: $12,355.79
874455-B21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor for DL360 Gen10 Server
SKU: 874455-B21
Price: $12,355.79
875956-B21 - HP 3.00GHz 10.40GT/s UPI 24.75MB L3 Cache Intel Xeon Platinum 8158 12 Core Processor
SKU: 875956-B21
Price: $12,355.79
878149-B21 - HP 3.00GHz 3 UPI Links 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor Kit for ProLiant DL580 Gen10
SKU: 878149-B21
Price: $12,521.82
878149-L21 - HP 3.00GHz 3 UPI Links 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor Kit for ProLiant DL580 Gen10
SKU: 878149-L21
Price: $12,521.82
877035-L21 - HP 3GHz 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor
SKU: 877035-L21
Price: $2,493.47
875733-001 - HP 3.0GHz 24.75MB L3 Cache Socket FCLGA36 Intel Xeon Platinum 8158 12 Core Processor
SKU: 875733-001
Price: $12,355.79
874455-L21 - HP 3GHz 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor
SKU: 874455-L21
Price: $12,355.79
876704-001 - HP 3GHz 24.75MB L3 Cache Socket FCLGA3647 Intel Xeon Platinum 8158 12-Core Processor
SKU: 876704-001
Price: $12,433.26
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.