The WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty costs $0.0400/GB while the WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0350/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 12% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty vs WD - Purple 4TB Surveillance Internal Hard Drive — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty | WD - Purple 4TB Surveillance Internal Hard Drive |
|---|---|---|
| Brand | white label | Western Digital |
| Capacity | 3 TB | 4 TB |
| $/GB | $0.0400 | $0.0350 |
| Price | $119.95 | $139.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to the WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty at $0.0400//GB — that's roughly 12% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, while the WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty starts at $119.95 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty and WD - Purple 4TB Surveillance Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty or WD - Purple 4TB Surveillance Internal Hard Drive a better deal?
As of June 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty at $0.0400//GB. That is approximately 12% better value per gigabyte.
What is the price per GB of WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty?
The WL 3TB 7200RPM 64MB Cache SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive (For RAID, NAS, DVR, Desktop PC) w/1 Year Warranty is currently priced at $0.0400/GB ($119.95 for 3 TB) at Amazon.
Where can I buy WD - Purple 4TB Surveillance Internal Hard Drive for the cheapest price?
The cheapest price for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, which works out to $0.0350/GB.