The SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 costs $0.3325/GB while the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) costs $0.0874/GB. Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers 74% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 vs Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) — Which Is Better Value?
Specification Comparison
| Spec | SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 | Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) |
|---|---|---|
| Brand | SanDisk | Silicon Power |
| Capacity | 4TB | 4TB |
| $/GB | $0.3325 | $0.0874 |
| Price | $1329.99 | $349.79 |
| Retailer | Newegg | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0
Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE)
Which Should You Buy?
Based on current pricing data, the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers better value at $0.0874//GB compared to the SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 at $0.3325//GB — that's roughly 74% less per gigabyte.
The best deal for the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) is $349.79 at Newegg, while the SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 starts at $1329.99 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 Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 and Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 or Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) a better deal?
As of June 2026, Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers better value at $0.0874//GB compared to SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 at $0.3325//GB. That is approximately 74% better value per gigabyte.
What is the price per GB of SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0?
The SanDisk Optimus GX PRO 850X M.2 2280-D5-M 4TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81400TAN-000E0 is currently priced at $0.3325/GB ($1329.99 for 4TB) at Newegg.
Where can I buy Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) for the cheapest price?
The cheapest price for the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) is $349.79 at Newegg, which works out to $0.0874/GB.