SanDisk Optimus GX PRO 850X 2TB vs TeamGroup MP44Q 2TB
SanDisk Optimus GX PRO 850X 2TB and TeamGroup MP44Q 2TB each win something the other does not — the choice is which of those you want.
| Specification | SanDiskOptimus GX PRO 850X 2TB | TeamGroupMP44Q 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 7300 | 7400better |
| Sequential write (MB/s) | 6600better | 6500 |
| Current best price | $529.99at Newegg · captured 2026-09-11 | $309.99betterat Newegg · captured 2026-09-13 |
| Price per TB | $265.00 | $155.00better |
| DRAM cache | Yes | — |
| NAND type | tlc | qlc |
How these two compare
Sequential throughput
SanDisk Optimus GX PRO 850X 2TB is rated 7300 MB/s read and 6600 MB/s write; TeamGroup MP44Q 2TB, 7400 MB/s read and 6500 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
Price
SanDisk Optimus GX PRO 850X 2TB lists at $529.99, or $265.00 per TB; TeamGroup MP44Q 2TB at $309.99, or $155.00 per TB.
DRAM cache
SanDisk Optimus GX PRO 850X 2TB carries a DRAM cache; the catalog does not state whether TeamGroup MP44Q 2TB carries a DRAM cache. A DRAM cache holds the drive's mapping table — the index of where each block physically sits — so the controller places and finds data without an extra flash lookup. A DRAM-less drive borrows a little system memory (HMB) or a slice of its own flash instead, and is likelier to slow once a long run of random writes outlasts its fast cache.
NAND
NAND: SanDisk Optimus GX PRO 850X 2TB uses TLC and TeamGroup MP44Q 2TB uses QLC. The tier is bits per cell — SLC, MLC, TLC and QLC from one to four — trading density against endurance and sustained-write speed: QLC is cheapest per gigabyte, TLC the mainstream balance, and the denser the cell the sooner sustained writes taper.
Which to buy
There is no outright answer — each takes something the other gives up. Decide which of those advantages matters for your build; the comparison above lays out both sides.
Common questions about this pair
- Which is faster, SanDisk Optimus GX PRO 850X 2TB or TeamGroup MP44Q 2TB?
- SanDisk Optimus GX PRO 850X 2TB is rated 7300 MB/s read and 6600 MB/s write; TeamGroup MP44Q 2TB, 7400 MB/s read and 6500 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
- Which costs less per terabyte, SanDisk Optimus GX PRO 850X 2TB or TeamGroup MP44Q 2TB?
- SanDisk Optimus GX PRO 850X 2TB lists at $529.99, or $265.00 per TB; TeamGroup MP44Q 2TB at $309.99, or $155.00 per TB.
- Should you buy SanDisk Optimus GX PRO 850X 2TB or TeamGroup MP44Q 2TB?
- There is no outright answer — each takes something the other gives up. Decide which of those advantages matters for your build; the comparison above lays out both sides.