The WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0579/GB while the Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ costs $0.0375/GB. Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ offers 35% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive vs Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ — Which Is Better Value?
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Specification Comparison
| Spec | WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive | Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ |
|---|---|---|
| Brand | Western Digital | Western Digital |
| Capacity | 12TB | 12 TB |
| $/GB | $0.0579 | $0.0375 |
| Price | $694.45 | $449.99 |
| Retailer | Newegg | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ offers better value at $0.0375//GB compared to the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0579//GB — that's roughly 35% less per gigabyte.
The best deal for the Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ is $449.99 at Amazon, while the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive starts at $694.45 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive and Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive or Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ a better deal?
As of August 2026, Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ offers better value at $0.0375//GB compared to WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0579//GB. That is approximately 35% better value per gigabyte.
What is the price per GB of WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive?
The WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is currently priced at $0.0579/GB ($694.45 for 12TB) at Newegg.
Where can I buy Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ for the cheapest price?
The cheapest price for the Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ is $449.99 at Amazon, which works out to $0.0375/GB.