Seagate · ST3400820AS
Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB
Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB by Seagate (model ST3400820AS) is an internal HDD (3.5") tracked on PriceSniff.
$111.19
Price checked 2d ago · compared across 1 store
View at Walmart → Compare all 1 stores ⌄Overview
It is currently listed at $111.19 at one tracked store. Key specifications: 0.4 TB capacity, 3.5" form factor, SATA 3Gb/s interface, 7200 RPM rotational speed. Compare drives by price per terabyte rather than sticker price, and buy the largest capacity you can use — bigger drives are almost always cheaper per gigabyte. We recheck every store we cover automatically, so the prices above stay current and you can compare offers and catch price drops before you buy.
All 1 tracked price
| Store | Price | Availability | |
|---|---|---|---|
Walmart | $111.19Best price | Out of stock | View → |
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PriceSniff tracks the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB across 1 store and charts its price history, so you can compare current offers and see whether today's price is a genuine deal. Listed under internal hdd, it is built by Seagate, model ST3400820AS. Notable specs include Capacity 0.4 TB, Form factor 3.5", Interface SATA 3Gb/s.
Specifications
- Capacity
- 0.4TB
- Form factor
- 3.5"
- Interface
- SATA 3Gb/s
- Rotational speed
- 7200RPM
90-day price history across tracked stores
Over the tracking period so far, PriceSniff has logged 1 price check for the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB. The price has held steady at $111.19, with the lowest seen on Sep 25, 2026. Right now the best price is $111.19 at Walmart, matching the lowest price we've tracked. The lowest price in the past year is $111.19. Today's best price matches the 90-day average of $111.19.
Walmart
View as table
| Date | Price |
|---|---|
| Sep 25 | $111.19 |
What is the best price for the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB?
The lowest price PriceSniff is currently tracking is $111.19 at Walmart. Prices update automatically, so the offers table above always shows the latest figure.
Is the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB a good deal right now?
It's about average — at $111.19, it's within 0% of its 90-day average of $111.19.
Which stores sell the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB?
PriceSniff compares the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB across 1 store: Walmart.
What is the lowest price the Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB has dropped to?
The lowest price PriceSniff has recorded is $111.19, seen on Sep 25, 2026. The price history chart on this page shows how the price has changed over time.
How often does PriceSniff update Seagate Desktop HDD ST3400820AS - Hard drive - 400 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 8 MB prices?
PriceSniff re-checks each tracked store on a regular schedule and records every change, building the price history and alerts you see on this page.
