Alternative to WD640AADS: Better-Value Equivalents in Stock
Comparing the WD640AADS (WD640AADS - Western Digital 640GB 7200RPM SATA Hard Drive) against alternatives? Pro Disk Network stocks 12 similar Western Digital 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 WD640AADS
| SKU | WD640AADS |
|---|---|
| Product | WD640AADS - Western Digital 640GB 7200RPM SATA Hard Drive |
| Current price | $684.97 |
| Stock status | In Stock |
| Detail page | View WD640AADS › |
Alternatives to WD640AADS
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.
WD6400AAKS - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS
Price: $110.53
WD6400AAKS-22A7B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-22A7B0
Price: $110.53
WD6400AAKS-41H2B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-41H2B0
Price: $157.07
WD6400AAKS-75A7B2 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-75A7B2
Price: $171.03
WD6400AAKS-75A7B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-75A7B0
Price: $182.37
WD6401AALS - Western Digital Caviar Black 640GB 7200RPM SATA 3Gb/s 32MB Cache 3.5-inch Hard Drive
SKU: WD6401AALS
Price: $189.47
WD6400AAKS-65A7B2 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-65A7B2
Price: $195.79
WD6400AALS - Western Digital 640GB 7200RPM SATA 3Gb/s 3.5-inch Hard Drive
SKU: WD6400AALS
Price: $198.16
WD6402AAEX - Western Digital Caviar Black 640GB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD6402AAEX
Price: $205.26
WD6400AAKS-40H2B1 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-40H2B1
Price: $211.00
WD6400AAKS-65Z7B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-65Z7B0
Price: $211.00
WD6400AAKS-00A7B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: WD6400AAKS-00A7B0
Price: $223.05
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.