Replacement for 637391R-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 637391R-B21 (637391R-B21 - HP ProLiant Blade Server Refurbished 1 x Intel Xeon E5649 2.53GHz)? 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 637391R-B21
| SKU | 637391R-B21 |
|---|---|
| Product | 637391R-B21 - HP ProLiant Blade Server Refurbished 1 x Intel Xeon E5649 2.53GHz |
| Stock status | In Stock |
| Detail page | View 637391R-B21 › |
Drop-in replacements for 637391R-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.
580641-B21 - HP ProLiant Ws460c G6 WorkStation Blade- 1x Xeon Qc E5540/2.53GHz, 4GB DDR3 Sdram, 2x Gigabit Ethernet, Blade Server
SKU: 580641-B21
Price: $402.11
594937-B21 - HP ProLiant Ws460c G6 WorkStation Blade- 1x Xeon Qc E5630 2.53GHz 2GB DDR3 SDRAM 2x 10 Gigabit Ethernet Blade WorkStation
SKU: 594937-B21
Price: $402.11
580640-B21 - HP ProLiant Ws460c G6 WorkStation Blade- 1x Xeon Qc E5530\2.40GHz 2GB DDR3 SDRAM 2x Gigabit Ethernet Blade WorkStation
SKU: 580640-B21
Price: $440.00
345021-B21 - HP ProLiant BL20P G2 Intel Xeon 3.20GHz 1GB DDR SDRAM CPU Server Blade Server System
SKU: 345021-B21
Price: $265.26
371708-001 - HP System Fan for ProLiant Bl25p Bl20p G3 Blade Server Xw25p Blade workstation
SKU: 371708-001
Price: $71.58
355928-B21 - HP 3.60GHz 800MHz FSB 1MB L2 Cache Socket PGA-604 Intel Xeon Single Core Processor for ProLiant BL20p G3 Blade Server
SKU: 355928-B21
Price: $73.68
409598-B21 - HP 3.20GHz 1066MHz FSB 4MB L2 Cache Socket LGA771 Intel Xeon 5063 Dual-Core Processor for ProLiant BL460c G1 Blade Server
SKU: 409598-B21
Price: $73.68
506720-B21 - HP 2.66GHz 1333MHz FSB 12MB L2 Cache Socket LGA771 Intel Xeon E5430 Quad-Core Processor for ProLiant BLade Workstation XW2X220C G5 Server
SKU: 506720-B21
Price: $87.22
464889-B21 - HP 2.33GHz 1333MHz FSB 12MB L2 Cache Socket LGA771 Intel Xeon E5410 Quad-Core Processor for ProLiant BL260c G5 Blade Server
SKU: 464889-B21
Price: $89.12
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.