Alternative to P45641-B21: Better-Value Equivalents in Stock
Comparing the P45641-B21 (HPE P45641-B21 InfiniBand NDR 1-Port 400Gb/s OSFP PCI Express 5.0 x16 HHHL Network Adapter. In Stock) against alternatives? Pro Disk Network stocks 12 similar HP 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 P45641-B21
| SKU | P45641-B21 |
|---|---|
| Product | HPE P45641-B21 InfiniBand NDR 1-Port 400Gb/s OSFP PCI Express 5.0 x16 HHHL Network Adapter. In Stock |
| Stock status | In Stock |
| Detail page | View P45641-B21 › |
Alternatives to P45641-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.
HPE P45642-B21 InfiniBand NDR200 1-Port 200Gb/s OSFP PCI Express 5.0 x16 Plug-in Card Network Adapter
SKU: P45642-B21
Price: $1,471.58
HPE P47642-001 InfiniBand NDR200 1-Port 200Gb/s OSFP PCI Express 5.0 x16 Plug-in Card Network Adapter
SKU: P47642-001
Price: $1,471.58
HPE P45646-001 InfiniBand NDR200 1-Port OSFP PCI Express 5.0 x16 Network Adapter
SKU: P45646-001
Price: $1,471.58
HPE 872725-B21 InfiniBand EDR 1-Port 100Gb/s 100GBase-X PCI-Express 3.0 x16 841QSFP28 Network Adapter
SKU: 872725-B21
Price: $170.53
HPE 877688-001 HP 877688-001 InfiniBand/EDR 841QSFP28 1-Port 100G 100GbE PCI-Express 3.0 x16 Network Adapter
SKU: 877688-001
Price: $170.53
HPE 878579-001 HP 878579-001 InfiniBand EDR 1 x Port 100Gb/s PCI-Express 3.0 x16 841QSFP28 Network Adapter
SKU: 878579-001
Price: $305.26
HPE P23665-B21 InfiniBand HDR100/Ethernet 1-Port 100GbE QSFP56 PCI Express 4.0 x16 Network Adapter
SKU: P23665-B21
Price: $534.74
HPE P23664-B21 Infiniband Hdr/Ethernet 1-Port 200GbE QSFP56 PCI Express 4.0 x16 Network Adapter for ProLiant Dl Rackmount Gen10 Plus Servers
SKU: P23664-B21
Price: $1,570.53
HPE P23664-H21 1x Port 200GbE QSFP56 HDR/Ethernet PCI Express 4.0 x16 InfiniBand Network Adapter
SKU: P23664-H21
Price: $1,570.53
HPE 843430-001 InfiniBand EDR 2 x Ports 100Gb/s QSFP28 PCI Express 3.0 X16 840Z Mezzanine FIO Adapter
SKU: 843430-001
Price: $75.79
HPE 872726-B21 InfiniBand EDR 2-Ports 841QSFP28 PCI Express 3.0 x16 Adapter
SKU: 872726-B21
Price: $305.26
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.