The Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive costs $0.3124/GB while the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... costs $0.1074/GB. KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... offers 66% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive vs KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... — Which Is Better Value?
Specification Comparison
| Spec | Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive | KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... |
|---|---|---|
| Brand | Biwin | KingSpec |
| Capacity | 128GB | 512GB |
| $/GB | $0.3124 | $0.1074 |
| Price | $39.99 | $54.99 |
| Retailer | Newegg | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive
KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data...
Which Should You Buy?
Based on current pricing data, the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... offers better value at $0.1074//GB compared to the Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive at $0.3124//GB — that's roughly 66% less per gigabyte.
The best deal for the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... is $54.99 at Newegg, while the Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive starts at $39.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive and KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... product page for detailed specifications and price history.
Frequently Asked Questions
Is Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive or KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... a better deal?
As of July 2026, KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... offers better value at $0.1074//GB compared to Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive at $0.3124//GB. That is approximately 66% better value per gigabyte.
What is the price per GB of Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive?
The Biwin 128GB Lightning SATA III USB3.0 Mini Ultra-slim Customize Portable SSD with SIP Technology Waterproof Mobile Solid State Drive is currently priced at $0.3124/GB ($39.99 for 128GB) at Newegg.
Where can I buy KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... for the cheapest price?
The cheapest price for the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s Read, Thumb Drive Metal USB 3.2 Type C USSD Mobile Solid U Disk External USB Flash Drives Data... is $54.99 at Newegg, which works out to $0.1074/GB.