The SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) costs $1.1426/GB while the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ costs $0.0324/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 97% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) vs Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ — Which Is Better Value?
Specification Comparison
| Spec | SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) | Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ |
|---|---|---|
| Brand | Sabrent | Western Digital |
| Capacity | 512GB | 4 TB |
| $/GB | $1.1426 | $0.0324 |
| Price | $584.99 | $129.77 |
| 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 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to the SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) at $1.1426//GB — that's roughly 97% less per gigabyte.
The best deal for the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is $129.77 at Amazon, while the SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) starts at $584.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) and Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ product page for detailed specifications and price history.
Frequently Asked Questions
Is SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) or Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ a better deal?
As of May 2026, Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) at $1.1426//GB. That is approximately 97% better value per gigabyte.
What is the price per GB of SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB)?
The SABRENT Rocket v90 512GB SD UHS-II Memory Card R280MB/s W250MB/s (SD-TL90-512GB) is currently priced at $1.1426/GB ($584.99 for 512GB) at Newegg.
Where can I buy Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ for the cheapest price?
The cheapest price for the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is $129.77 at Amazon, which works out to $0.0324/GB.