The SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black costs $0.2700/GB while the KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive costs $0.0950/GB. KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive offers 65% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black vs KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive — Which Is Better Value?
Prices refresh twice daily; the final price appears at the retailer's checkout. We may earn a commission from retailer links, at no cost to you; it never affects rankings.
Specification Comparison
| Spec | SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black | KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive |
|---|---|---|
| Brand | SanDisk | KingSpec |
| Capacity | 2 TB | 2TB |
| $/GB | $0.2700 | $0.0950 |
| Price | $539.99 | $189.99 |
| Retailer | Best Buy | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black
KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive
Which Should You Buy?
Based on current pricing data, the KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive offers better value at $0.0950//GB compared to the SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black at $0.2700//GB — that's roughly 65% less per gigabyte.
The best deal for the KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive is $189.99 at Newegg, while the SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black starts at $539.99 at Best Buy.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black and KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black or KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive a better deal?
As of August 2026, KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive offers better value at $0.0950//GB compared to SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black at $0.2700//GB. That is approximately 65% better value per gigabyte.
What is the price per GB of SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black?
The SanDisk Professional - PRO-G40 SSD 2TB External Thunderbolt 3 and USB-C NVMe Portable SSD - Black is currently priced at $0.2700/GB ($539.99 for 2 TB) at Best Buy.
Where can I buy KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive for the cheapest price?
The cheapest price for the KingSpec MemoStone US4 Type-C USSD 2TB Flash Drive SSD Memory Stick, USB 3.1 Gen 2, 540MB/s External Solid State Disk, Type A & C 2-in -1 Dual Drive is $189.99 at Newegg, which works out to $0.0950/GB.