Kioxia Exceria Pro G2 2TB vs SanDisk Optimus GX PRO 8100 2TB
Kioxia Exceria Pro G2 2TB and SanDisk Optimus GX PRO 8100 2TB each win something the other does not — the choice is which of those you want.
| Specification | KioxiaExceria Pro G2 2TB | SanDiskOptimus GX PRO 8100 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 14900 | 14900 |
| Sequential write (MB/s) | 13400 | 14000better |
| Current best price | $360.42betterat Amazon.com · captured 2026-09-13 | $549.99at Newegg · captured 2026-09-11 |
| Price per TB | $180.21better | $275.00 |
| Endurance (TBW) | 1200 | 1200 |
| Warranty (years) | 5 | 5 |
| DRAM cache | Yes | Yes |
| NAND type | tlc | tlc |
| Controller | Silicon Motion SM2508 | — |
How these two compare
Sequential throughput
Kioxia Exceria Pro G2 2TB is rated 14900 MB/s read and 13400 MB/s write; SanDisk Optimus GX PRO 8100 2TB, 14900 MB/s read and 14000 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.
Random access
On random 4K access — the small, scattered reads and writes behind boot, app launches and general responsiveness — Kioxia Exceria Pro G2 2TB is rated 2,250,000 read and 1,950,000 write IOPS, SanDisk Optimus GX PRO 8100 2TB 2,300,000 read and 2,400,000 write. This is the figure that follows everyday feel, where the sequential rates above follow big-file copies.
Price
Kioxia Exceria Pro G2 2TB lists at $360.42, or $180.21 per TB; SanDisk Optimus GX PRO 8100 2TB at $549.99, or $275.00 per TB.
Endurance
The makers warrant 1200 TBW on Kioxia Exceria Pro G2 2TB and 1200 TBW on SanDisk Optimus GX PRO 8100 2TB — how much writing each is rated to take before the endurance clause lapses. Most desktop workloads never come close, so read the two against each other rather than as a limit you are likely to reach.
DRAM cache
Kioxia Exceria Pro G2 2TB carries a DRAM cache; SanDisk Optimus GX PRO 8100 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, controller and warranty
NAND: Kioxia Exceria Pro G2 2TB uses TLC and SanDisk Optimus GX PRO 8100 2TB uses TLC. 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. On the controller: Kioxia Exceria Pro G2 2TB uses the Silicon Motion SM2508, and SanDisk Optimus GX PRO 8100 2TB's controller is not stated. It is the chip handling error correction, wear-levelling and where each write lands — much of how a drive holds up under load — even if the part number on its own tells you little. On the cover: Kioxia Exceria Pro G2 2TB carries a 5-year warranty, SanDisk Optimus GX PRO 8100 2TB carries a 5-year warranty. The length is the maker's own vote of confidence, and on an SSD it tends to track the endurance rating — a longer warranty usually meaning more rated writes.
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, Kioxia Exceria Pro G2 2TB or SanDisk Optimus GX PRO 8100 2TB?
- Kioxia Exceria Pro G2 2TB is rated 14900 MB/s read and 13400 MB/s write; SanDisk Optimus GX PRO 8100 2TB, 14900 MB/s read and 14000 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.
- How do Kioxia Exceria Pro G2 2TB and SanDisk Optimus GX PRO 8100 2TB compare on random access?
- On random 4K access — the small, scattered reads and writes behind boot, app launches and general responsiveness — Kioxia Exceria Pro G2 2TB is rated 2,250,000 read and 1,950,000 write IOPS, SanDisk Optimus GX PRO 8100 2TB 2,300,000 read and 2,400,000 write. This is the figure that follows everyday feel, where the sequential rates above follow big-file copies.
- Which costs less per terabyte, Kioxia Exceria Pro G2 2TB or SanDisk Optimus GX PRO 8100 2TB?
- Kioxia Exceria Pro G2 2TB lists at $360.42, or $180.21 per TB; SanDisk Optimus GX PRO 8100 2TB at $549.99, or $275.00 per TB.
- Should you buy Kioxia Exceria Pro G2 2TB or SanDisk Optimus GX PRO 8100 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.