Alternative to 631674-B21: Better-Value Equivalents in Stock
Comparing the 631674-B21 (631674-B21 - HP Smart Array P421 6GB 2-Ports Ext PCI-Express 3.0 SAS RAID Controller with 2GB for G8) 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 631674-B21
| SKU | 631674-B21 |
|---|---|
| Product | 631674-B21 - HP Smart Array P421 6GB 2-Ports Ext PCI-Express 3.0 SAS RAID Controller with 2GB for G8 |
| Current price | $194.74 |
| Stock status | In Stock |
| Detail page | View 631674-B21 › |
Alternatives to 631674-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.
655636-B21 - HP Smart Array P721m 6GB/s 4-Ports Ext PCI-Express Mezzanine SAS Controller with 512MB Cache
SKU: 655636-B21
Price: $212.63
610671-002 - HP Smart Array P421 6GB 2-Ports Ext PCI-Express 3.0 X8 SAS RAID Controller
SKU: 610671-002
Price: $704.62
AM312A - HP Integrity Smart Array P812 6GB 4-Port Ext PCI-Express SAS Controller with 1GB Cache
SKU: AM312A
Price: $163.16
631667-B21 - HP Smart Array P222 6GB 1-Port Ext PCI-Express 3.0 X8 SAS RAID Controller
SKU: 631667-B21
Price: $173.68
631673-B21 - HP Smart Array P421 6GB 2-Port Ext PCI-Express 3.0 X8 SAS RAID Controller
SKU: 631673-B21
Price: $194.74
AP846B - HP Modular Smart Array P2000 G3 Fc Dual Controller Sff Modular Smart Array System Hard Drive Array 24-Bay 0
SKU: AP846B
Price: $1,450.53
698536-B21 - HP Smart Array P731m 6GB 4-Ports Ext Mezzanine SAS Controller with 512MB Fbwc
SKU: 698536-B21
Price: $184.21
726826-B21 - HP Smart Array P441 PCI Express 3.0 X8 12GB 2-Port Ext SAS Controller Card
SKU: 726826-B21
Price: $275.79
615418-B21 - HP Smart Array P822/2GB FBWC PCI-Express 6GB/s 2-Ports Internal/4-Ports External SAS/SATA RAID Controller Card
SKU: 615418-B21
Price: $155.79
698531-B21 - HP Smart Array P431/2GB Fbwc 12GB 2-Ports Ext SAS Controller
SKU: 698531-B21
Price: $547.37
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.