The KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... costs $0.0840/GB while the Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E costs $0.3369/GB. KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... offers 75% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... vs Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E — Which Is Better Value?
Specification Comparison
| Spec | KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... | Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E |
|---|---|---|
| Brand | KingSpec | Western Digital |
| Capacity | 512GB | 500GB |
| $/GB | $0.0840 | $0.3369 |
| Price | $42.99 | $168.44 |
| Retailer | Newegg | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | nvme |
Price Across Retailers
KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid...
Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E
Which Should You Buy?
Based on current pricing data, the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... offers better value at $0.0840//GB compared to the Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E at $0.3369//GB — that's roughly 75% less per gigabyte.
The best deal for the KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... is $42.99 at Newegg, while the Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E starts at $168.44 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... and Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E product page for detailed specifications and price history.
Frequently Asked Questions
Is KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... or Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E a better deal?
As of June 2026, KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... offers better value at $0.0840//GB compared to Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E at $0.3369//GB. That is approximately 75% better value per gigabyte.
What is the price per GB of KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid...?
The KingSpec MomeStone 512GB Portable SSD up to 2000MB/s, Thumb Drive 20Gbps USB 3.2 Gen 2, Type-C USSD Mobile Solid U Disk USB Flash External Solid... is currently priced at $0.0840/GB ($42.99 for 512GB) at Newegg.
Where can I buy Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E for the cheapest price?
The cheapest price for the Western Digital WD BLACK SN850 NVMe M.2 2280 500GB PCI-Express 4.0 x4 3D NAND Internal Solid State Drive (SSD) WDS500G1X0E is $168.44 at Newegg, which works out to $0.3369/GB.