The WD Blue SATA 2.5' SA510 4TB Internal SSD costs $0.1918/GB while the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) costs $0.0825/GB. SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers 57% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Blue SATA 2.5' SA510 4TB Internal SSD vs SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) — Which Is Better Value?
WD Blue SATA 2.5' SA510 4TB Internal SSD
Specification Comparison
| Spec | WD Blue SATA 2.5' SA510 4TB Internal SSD | SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) |
|---|---|---|
| Brand | Western Digital | SP Silicon Power |
| Capacity | 4TB | 4 TB |
| $/GB | $0.1918 | $0.0825 |
| Price | $767.03 | $329.97 |
| Retailer | Newegg | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers better value at $0.0825//GB compared to the WD Blue SATA 2.5' SA510 4TB Internal SSD at $0.1918//GB — that's roughly 57% less per gigabyte.
The best deal for the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) is $329.97 at Amazon, while the WD Blue SATA 2.5' SA510 4TB Internal SSD starts at $767.03 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Blue SATA 2.5' SA510 4TB Internal SSD and SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Blue SATA 2.5' SA510 4TB Internal SSD or SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) a better deal?
As of June 2026, SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers better value at $0.0825//GB compared to WD Blue SATA 2.5' SA510 4TB Internal SSD at $0.1918//GB. That is approximately 57% better value per gigabyte.
What is the price per GB of WD Blue SATA 2.5' SA510 4TB Internal SSD?
The WD Blue SATA 2.5' SA510 4TB Internal SSD is currently priced at $0.1918/GB ($767.03 for 4TB) at Newegg.
Where can I buy SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) for the cheapest price?
The cheapest price for the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) is $329.97 at Amazon, which works out to $0.0825/GB.