Alternative to ST9250421ASG: Better-Value Equivalents in Stock
Comparing the ST9250421ASG (ST9250421ASG - Seagate Momentus 250GB 7200RPM SERIAL ATA-300 SATA 2.5-inch 9.5MM HIGH 16MB Cache Laptop Hard Drive with G F) 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 ST9250421ASG
| SKU | ST9250421ASG |
|---|---|
| Product | ST9250421ASG - Seagate Momentus 250GB 7200RPM SERIAL ATA-300 SATA 2.5-inch 9.5MM HIGH 16MB Cache Laptop Hard Drive with G F |
| Current price | $259.37 |
| Stock status | In Stock |
| Detail page | View ST9250421ASG › |
Alternatives to ST9250421ASG
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.
ST910021AS - Seagate Momentus 100GB 7200RPM SERIAL ATA-150 SATA 2.5-inch 8MB Cache Hard Drive
SKU: ST910021AS
Price: $273.91
9PSG42-300 - Seagate Momentus 7200.4 250GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-inch Hard Drive
SKU: 9PSG42-300
Price: $282.20
9W3039-300 - Seagate Momentus 5400.2 100GB 5400RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache (CE) 2.5-inch Hard Drive
SKU: 9W3039-300
Price: $157.88
9AH439-300 - Seagate Momentus 4200.2 100GB 4200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache (CE) 2.5-inch Hard Drive
SKU: 9AH439-300
Price: $189.47
9W3884-300 - Seagate Momentus 5400.2 120GB 5400RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache (CE) 2.5-inch Hard Drive
SKU: 9W3884-300
Price: $192.08
9AH433-300 - Seagate Momentus 4200.2 80GB 4200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache (CE) 2.5-inch Hard Drive
SKU: 9AH433-300
Price: $344.84
ST3200820AS - Seagate BarraCuda 200GB 7200RPM SATA 3Gb/s 8MB Cache SERIAL ATA-300 3.5-inch Hard Drive
SKU: ST3200820AS
Price: $265.26
ST91608220AS - Seagate Momentus 160GB 5400RPM SERIAL ATA-150 8MB Cache 2.5-inch Laptop Hard Drive
SKU: ST91608220AS
Price: $305.05
9S3733-503 - Seagate Momentus 7200.1 80GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: 9S3733-503
Price: $151.55
ST980825A - Seagate Momentus 7200.1 80GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: ST980825A
Price: $273.91
ST96023A-RK - Seagate Momentus 60GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Plug-in Module Hard Drive
SKU: ST96023A-RK
Price: $664.07
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.