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 $0.0350/GB while the WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) costs $0.0744/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 53% better value per gigabyte as of July 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 My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) — Which Is Better Value?
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 My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) |
|---|---|---|
| Brand | MDD MAXDIGITALDATA | Western Digital |
| Capacity | 4 TB | 4TB |
| $/GB | $0.0350 | $0.0744 |
| Price | $139.99 | $297.52 |
| 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)
WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN)
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 $0.0350//GB compared to the WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) at $0.0744//GB — that's roughly 53% 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 $139.99 at Amazon, while the WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) starts at $297.52 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 My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) 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 My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) a better deal?
As of July 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 $0.0350//GB compared to WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) at $0.0744//GB. That is approximately 53% 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 $0.0350/GB ($139.99 for 4 TB) at Amazon.
Where can I buy WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) for the cheapest price?
The cheapest price for the WD My Book 4TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0040HBK-NESN) is $297.52 at Newegg, which works out to $0.0744/GB.