WD Purple 12 TB: price per TB and price history
Part number WD121PURZASIN B07DYNG3N8Brand Western DigitalInternal 3.5"
The WD Purple 12 TB (WD121PURZ) is an internal 3.5-inch hard drive by Western Digital with CMR recording. On amazon.com it costs $719.69 new, which is $59.97 per TB (as of Oct 27, 2026, 9:21 PM UTC). The TB index for internal 3.5-inch hard drives is $36.25 per TB.
Price per TB, New
Total $719.69 for 12 TB, cheapest new offer, excl. shipping
- 1 day
- ▼ 0.7 %
- 7 days
- ▼ 0.4 %
- 30 days
- ▲ 6.6 %
- 90-day low
- 48.67
90 days
Price per TB, Used
Total $349.99 for 12 TB, cheapest used offer, excl. shipping
- 1 day
- 0.0 %
- 7 days
- 0.0 %
- 30 days
- ▼ 11.5 %
- 90-day low
- 29.17
90 days
How much does the WD Purple 12 TB cost per TB?
The WD Purple 12 TB costs $59.97 per TB new on amazon.com. That is 65.4% above the TB index for internal 3.5-inch hard drives ($36.25 per TB). Among 79 new internal 3.5-inch hard drives it ranks number 47 by price per TB.
| Condition | Price | Price per TB | As of | Offer |
|---|---|---|---|---|
| Used | $349.99Oct 27, 2026, 9:21 PM UTC | $29.17 | Oct 27, 2026, 9:21 PM UTC | Amazon* |
| New | $719.69Oct 27, 2026, 9:21 PM UTC | $59.97 | Oct 27, 2026, 9:21 PM UTC | Amazon* |
Prices: cheapest offer per condition from all sellers on amazon.com (Amazon and marketplace sellers), excluding shipping, timestamp per row. At the top of its product page, Amazon often shows the featured offer from another seller, which can cost more. The button therefore opens the list of all offers. The price may have changed since the timestamp. If the Amazon app opens in another country's store, prices there differ: set the app to United States or open the link in your browser.
How has the price of the WD Purple 12 TB changed?
Over the last 30 days the price rose by 6.6%, from $675.00 to $719.69. The 90-day low is $48.67 per TB ($584.00). It counts the lowest price that held for at least 2 days.
| Period | Change in price per TB |
|---|---|
| 7 days | ▼ 0.4 % |
| 14 days | ▲ 6.6 % |
| 30 days | ▲ 6.6 % |
| 90 days | ▲ 23.2 % |
Price archive since Jul 29, 2026, updated daily.
What are the specs of the WD Purple 12 TB?
According to the Western Digital data sheet, the WD Purple 12 TB has CMR (conventional magnetic recording), 7,200 rpm and 256 MB cache. CMR suits RAID arrays and continuous operation.
| Spec | Value |
|---|---|
| Brand | Western Digital |
| Series | WD Purple |
| Part number | WD121PURZ |
| ASIN | B07DYNG3N8 |
| Capacity | 12 TB (12 × 10¹² Byte) |
| Form factor | 3.5" internal |
| Technology | HDD |
| Recording | CMR |
| Spindle speed | 7,200 rpm |
| Cache | 256 MB |
Source: Western Digital data sheet
What are the alternatives to the WD Purple 12 TB?
In the same series, the WD Purple 4 TB (WD44PURZ-SPCPDY0) is cheaper at $48.75 per TB. At 12 TB, the Toshiba MG Series 12 TB (MG07ACA12TE) costs $39.17 per TB.
| Product | Capacity | Price per TB | Recording |
|---|---|---|---|
| WD Purple 1 TB | 1 TB | $152.00 | CMR |
| WD Purple 2 TB | 2 TB | $87.37 | |
| WD Purple 3 TB | 3 TB | $69.67 | CMR |
| WD Purple 4 TB | 4 TB | $48.75 | CMR |
| WD Purple 6 TB | 6 TB | $54.42 | CMR |
| WD Purple 8 TB | 8 TB | $54.25 | CMR |
| Product | Capacity | Price per TB | Recording |
|---|---|---|---|
| Toshiba MG Series 12 TB | 12 TB | $39.17 | CMR |
| Toshiba N300 PRO 12 TB | 12 TB | $44.17 | CMR |
| Seagate IronWolf Pro 12 TB | 12 TB | $49.08 | CMR |
Frequently asked questions about the WD Purple 12 TB
Is the WD Purple 12 TB cheap right now?
The price per TB is 23.2% above the 90-day low of $48.67 and 65.4% above the TB index for its product type (as of Oct 27, 2026, 9:21 PM UTC).
Is the WD Purple 12 TB CMR or SMR?
CMR, according to the Western Digital data sheet.
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Prices: amazon.com, timestamp per row. Specs: manufacturer data sheet. Calculation: How the TB index works. All offers Internal 3.5".