PNY CS2150 2TB vs PNY XLR8 CS3140 2TB
PNY CS2150 2TB and PNY XLR8 CS3140 2TB each win something the other does not — the choice is which of those you want.
| Specification | PNYCS2150 2TB | PNYXLR8 CS3140 2TB |
|---|---|---|
| Capacity (GB) | 2000 | 2000 |
| Sequential read (MB/s) | 10200better | 7500 |
| Sequential write (MB/s) | 8500better | 6850 |
| Current best price | $390.00at Amazon.com · captured 2026-09-13 | $322.99betterat Newegg · captured 2026-09-13 |
| Price per TB | $195.00 | $161.50better |
| DRAM cache | — | Yes |
| NAND type | tlc | tlc |
| Controller | — | Phison PS5018-E18 |
How these two compare
Sequential throughput
PNY CS2150 2TB is rated 10200 MB/s read and 8500 MB/s write; PNY XLR8 CS3140 2TB, 7500 MB/s read and 6850 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
PNY CS2150 2TB lists at $390.00, or $195.00 per TB; PNY XLR8 CS3140 2TB at $322.99, or $161.50 per TB.
DRAM cache
the catalog does not state whether PNY CS2150 2TB carries a DRAM cache; PNY XLR8 CS3140 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: PNY CS2150 2TB uses TLC and PNY XLR8 CS3140 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: PNY CS2150 2TB's controller is not stated, and PNY XLR8 CS3140 2TB uses the Phison PS5018-E18. 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: PNY CS2150 2TB does not state one, PNY XLR8 CS3140 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, PNY CS2150 2TB or PNY XLR8 CS3140 2TB?
- PNY CS2150 2TB is rated 10200 MB/s read and 8500 MB/s write; PNY XLR8 CS3140 2TB, 7500 MB/s read and 6850 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, PNY CS2150 2TB or PNY XLR8 CS3140 2TB?
- PNY CS2150 2TB lists at $390.00, or $195.00 per TB; PNY XLR8 CS3140 2TB at $322.99, or $161.50 per TB.
- Should you buy PNY CS2150 2TB or PNY XLR8 CS3140 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.