The SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed costs $0.2500/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 67% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed 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?
Specification Comparison
| Spec | SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed | 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 | SanDisk | SP Silicon Power |
| Capacity | 4TB | 4 TB |
| $/GB | $0.2500 | $0.0825 |
| Price | $999.99 | $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 SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed at $0.2500//GB — that's roughly 67% 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 SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed starts at $999.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed 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 SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed 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 SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed at $0.2500//GB. That is approximately 67% better value per gigabyte.
What is the price per GB of SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed?
The SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed is currently priced at $0.2500/GB ($999.99 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.