The WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck costs $0.2000/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 53% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck 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?
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Specification Comparison
| Spec | WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck | 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 | Western Digital | KingSpec |
| Capacity | 2 TB | 2TB |
| $/GB | $0.2000 | $0.0950 |
| Price | $399.99 | $189.99 |
| Retailer | Best Buy | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | nvme | ssd |
Price Across Retailers
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 WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck at $0.2000//GB — that's roughly 53% 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 WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck starts at $399.99 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 WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck 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 WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck 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 WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck at $0.2000//GB. That is approximately 53% better value per gigabyte.
What is the price per GB of WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck?
The WD - BLACK SN770M 2TB Internal SSD PCIe Gen 4 x4 M.2 2230 for ROG Ally and Steam Deck is currently priced at $0.2000/GB ($399.99 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.