Kioxia Exceria Pro G2 2TB vs SanDisk Optimus GX PRO 8100 2TB
The site holds no current price for at least one of these, so what follows compares specifications alone.
| 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 | — | 568,99 €at Amazon.fr · captured 2026-09-13 |
| Price per TB | — | 284,50 € |
| 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.
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
With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.
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.
- Should you buy Kioxia Exceria Pro G2 2TB or SanDisk Optimus GX PRO 8100 2TB?
- With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.