Alternative to ST500420AS: Better-Value Equivalents in Stock
Comparing the ST500420AS (ST500420AS Seagate 500GB 7200RPM SATA 3Gb/s 2.5-) against alternatives? Pro Disk Network stocks 12 similar Seagate 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 ST500420AS
| SKU | ST500420AS |
|---|---|
| Product | ST500420AS Seagate 500GB 7200RPM SATA 3Gb/s 2.5- |
| Stock status | In Stock |
| Detail page | View ST500420AS › |
Alternatives to ST500420AS
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.
ST3500514NS - Seagate Constellation 500GB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive
SKU: ST3500514NS
Price: $50.53
ST3500418AS - Seagate BarraCuda 7200.12 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: ST3500418AS
Price: $68.42
9JW152-536 - Seagate Constellation ES 500GB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive
SKU: 9JW152-536
Price: $84.21
ST3500630NS - Seagate BarraCuda ES NL35 Series 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: ST3500630NS
Price: $86.32
9BL146-784 - Seagate BarraCuda ES 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9BL146-784
Price: $98.71
9BJ146-505 - Seagate BarraCuda 7200.1 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9BJ146-505
Price: $110.53
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.