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 $0.0375/GB while the WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ costs $0.0525/GB. 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) offers 29% better value per gigabyte as of August 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 Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ — Which Is Better Value?
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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 Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ |
|---|---|---|
| Brand | MDD MAXDIGITALDATA | Western Digital |
| Capacity | 4 TB | 4TB |
| $/GB | $0.0375 | $0.0525 |
| Price | $149.99 | $210.00 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
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)
Which Should You Buy?
Based on current pricing data, 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) offers better value at $0.0375//GB compared to the WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ at $0.0525//GB — that's roughly 29% less per gigabyte.
The best deal for 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 $149.99 at Amazon, while the WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ starts at $210.00 at Newegg.
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 Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ 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 Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ a better deal?
As of August 2026, 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) offers better value at $0.0375//GB compared to WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ at $0.0525//GB. That is approximately 29% 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 $0.0375/GB ($149.99 for 4 TB) at Amazon.
Where can I buy WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ for the cheapest price?
The cheapest price for the WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD40PURZ is $210.00 at Newegg, which works out to $0.0525/GB.