Alternative to 81Y1531: Better-Value Equivalents in Stock
Comparing the 81Y1531 (81Y1531 - IBM ConnectX-2 VPI 10Gigabit Dual Port PCI Express 2.0 QSFP QDR InfiniBand Host Channel Adapter by Mellanox) against alternatives? Pro Disk Network stocks 12 similar IBM parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the 81Y1531
| SKU | 81Y1531 |
|---|---|
| Product | 81Y1531 - IBM ConnectX-2 VPI 10Gigabit Dual Port PCI Express 2.0 QSFP QDR InfiniBand Host Channel Adapter by Mellanox |
| Current price | $186.37 |
| Stock status | In Stock |
| Detail page | View 81Y1531 › |
Alternatives to 81Y1531
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.
81Y1533 - IBM Mellanox ConnectX-2 VPI 10GBE Dual Port PCI-Express 2.0 QSFP QDR Infiniband Host Channel Adapter
SKU: 81Y1533
Price: $344.84
74Y9058 - IBM ConnectX-2 VPI 40GB S IB QSFP And 10GBE SFP+ PCI Express 2.0 Network Adapter
SKU: 74Y9058
Price: $981.38
95Y3457 - IBM ConnectX-3 VPI Dual Port QSFP QDR/FDR10/10Gigabit HCA by Mellanox
SKU: 95Y3457
Price: $160.00
00D9552 - IBM ConnectX-3 VPI Dual Port QSFP, FDR IB (56Gb/s) and 40GbE, PCIe 3.0 by Mellanox
SKU: 00D9552
Price: $369.84
00W0037 - IBM ConnectX-3 VPI Single Port QSFP, FDR IB (56Gb/s) and 40GbE, PCIe 3.0 by Mellanox
SKU: 00W0037
Price: $447.01
95Y3750 - IBM Mellanox ConnectX-2 Dual Port QSFP QDR IB Adapter for System x
SKU: 95Y3750
Price: $474.79
MC2207130-002 - IBM / Mellanox 2M VPI 56Gb/s QSFP Passive Copper Cable
SKU: MC2207130-002
Price: $178.95
44R8728 - IBM Mellanox ConnectX Dual-Port PCI-Express 2.0 4X DDR InfiniBand Host Channel Adapter
SKU: 44R8728
Price: $73.68
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.