The MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) costs $0.0325/GB while the WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0262/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 19% better value per gigabyte as of March 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) vs WD - Purple 4TB Surveillance Internal Hard Drive — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) | WD - Purple 4TB Surveillance Internal Hard Drive |
|---|---|---|
| Brand | MDD MAXDIGITALDATA | Western Digital |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.0325 | $0.0262 |
| Price | $129.99 | $104.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives & SSDs | Hard Drives & SSDs |
| 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 $0.0262//GB compared to the MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) at $0.0325//GB — that's roughly 19% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $104.99 at Best Buy, while the MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) starts at $129.99 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) and WD - Purple 4TB Surveillance Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) or WD - Purple 4TB Surveillance Internal Hard Drive a better deal?
As of March 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0262//GB compared to MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) at $0.0325//GB. That is approximately 19% better value per gigabyte.
What is the price per GB of MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS)?
The MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS) is currently priced at $0.0325/GB ($129.99 for 4 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 $104.99 at Best Buy, which works out to $0.0262/GB.