Replacement for 43X5255: Drop-In Alternatives We Stock
Looking for a replacement for the 43X5255 (43X5255 - IBM 2.66GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5550 4-Core Processor)? Pro Disk Network ships IBM 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 43X5255
| SKU | 43X5255 |
|---|---|
| Product | 43X5255 - IBM 2.66GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5550 4-Core Processor |
| Current price | $86.38 |
| Stock status | In Stock |
| Detail page | View 43X5255 › |
Drop-in replacements for 43X5255
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.
42D1262 - IBM 2.93GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5570 4-Core Processor
SKU: 42D1262
Price: $82.42
794794G - IBM 2.93GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5570 4-Core Processor
SKU: 794794G
Price: $82.42
46R4605 - IBM 2.66GHz 4.8GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon W3520 4-Core Processor
SKU: 46R4605
Price: $82.75
46D1266 - IBM 2.40GHz 5.86GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon E5530 Quad-Core Processor
SKU: 46D1266
Price: $85.14
42D1264 - IBM 2.66GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5550 4-Core Processor
SKU: 42D1264
Price: $86.38
81Y9333 - IBM 2.13GHz 4.8GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon E5606 4-Core Processor
SKU: 81Y9333
Price: $86.38
49Y3206 - IBM 2.13GHz 4.8GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon E5606 4-Core Processor
SKU: 49Y3206
Price: $86.38
783644A - IBM 2.4GHz 5.86GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon E5530 4-Core Processor
SKU: 783644A
Price: $86.38
43X5256 - IBM 2.8GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5560 4-Core Processor
SKU: 43X5256
Price: $86.38
64Y9829 - IBM 3.33GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon W3580 4-Core Processor
SKU: 64Y9829
Price: $99.53
43X5385 - IBM 2.4GHz 5.86GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon L5530 4-Core Processor
SKU: 43X5385
Price: $340.25
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.