Replacement for 539821-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 539821-B21 (539821-B21 - HP 2.1GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8425 HE 6-Core Processor Kit)? 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 539821-B21
| SKU | 539821-B21 |
|---|---|
| Product | 539821-B21 - HP 2.1GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8425 HE 6-Core Processor Kit |
| Current price | $294.74 |
| Stock status | In Stock |
| Detail page | View 539821-B21 › |
Drop-in replacements for 539821-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.
575260-B21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 575260-B21
Price: $138.95
539661-001 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539661-001
Price: $138.95
539659-001 - HP 2.8GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8439 SE 6-Core Processor Kit
SKU: 539659-001
Price: $155.79
539449-001 - HP 2.8GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8439 SE 6-Core Processor
SKU: 539449-001
Price: $155.79
539819-L21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539819-L21
Price: $166.32
539848-L21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539848-L21
Price: $166.32
539819-B21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539819-B21
Price: $166.32
539848-B21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539848-B21
Price: $176.84
575510-001 - HP 2.1GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8425 HE 6-Core Processor
SKU: 575510-001
Price: $184.21
539451-002 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 539451-002
Price: $185.51
575260-L21 - HP 2.4GHz 2400MHz HTL 6MB L3 Cache Socket Fr6(1207) AMD Opteron 8431 6-Core Processor
SKU: 575260-L21
Price: $196.76
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.