Alternative to STM3250820A: Better-Value Equivalents in Stock
Comparing the STM3250820A (STM3250820A - Seagate DiamondMax 21 250GB 3.5-inch Hard Drive ATA-100 7200RPM 16MB Cache) 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 STM3250820A
| SKU | STM3250820A |
|---|---|
| Product | STM3250820A - Seagate DiamondMax 21 250GB 3.5-inch Hard Drive ATA-100 7200RPM 16MB Cache |
| Current price | $474.61 |
| Stock status | In Stock |
| Detail page | View STM3250820A › |
Alternatives to STM3250820A
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.
STM3802110A - Seagate DiamondMax 20 80GB 3.5-inch Hard Drive ATA-100 7200RPM 2MB Cache
SKU: STM3802110A
Price: $157.07
STM3402111A - Seagate DiamondMax 20 40GB 3.5-inch Hard Drive ATA-100 7200RPM 2MB Cache
SKU: STM3402111A
Price: $259.50
9DP03F-326 - Seagate Maxtor DiamondMax 21 200GB 7200RPM ATA-100 8MB Cache 3.5-inch Hard Drive
SKU: 9DP03F-326
Price: $336.29
9DP046-305 - Seagate DiamondMax 21 500GB 7200RPM ATA-100 16MB Cache 3.5-inch Hard Drive
SKU: 9DP046-305
Price: $343.63
9DP046-326 - Seagate Maxtor DiamondMax 21 500GB 7200RPM ATA-100 16MB Cache 3.5-inch Hard Drive
SKU: 9DP046-326
Price: $437.78
STM340211A - Seagate DiamondMax 20 40GB 3.5-inch Hard Drive ATA-100 7200RPM 2MB Cache
SKU: STM340211A
Price: $479.58
STM3160212A - Seagate DiamondMax 20 160GB 3.5-inch Hard Drive ATA-100 7200RPM 8MB Cache
SKU: STM3160212A
Price: $532.82
STM3160215A - Seagate DiamondMax 21 160GB 7200RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: STM3160215A
Price: $534.93
STM3320820A - Seagate DiamondMax 21 320GB ATA-100 7200RPM 8MB Cache 3.5-inch Hard Drive
SKU: STM3320820A
Price: $607.29
STM3250310AS - Seagate DiamondMax 21 250GB SATA 3Gb/s 7200RPM 8MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: STM3250310AS
Price: $66.97
9Y7283-021 - Seagate BarraCuda 7200.8 250GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 3.5-inch Hard Drive
SKU: 9Y7283-021
Price: $365.24
STM3320620AS - Seagate DiamondMax 21 320GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: STM3320620AS
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.