PNY XLR8 CS3140 4TB vs TeamGroup T-Force Z540 4TB
At least one of these has no price the site currently tracks, so what follows weighs specifications alone.
| Specification | PNYXLR8 CS3140 4TB | TeamGroupT-Force Z540 4TB |
|---|---|---|
| Capacity (GB) | 4000 | 4000 |
| Sequential read (MB/s) | 7500 | 12400better |
| Sequential write (MB/s) | 6850 | 11800better |
| Current best price | — | — |
| Price per TB | — | — |
| Endurance (TBW) | 3000better | 2400 |
| Warranty (years) | 5 | 5 |
| DRAM cache | Yes | Yes |
| NAND type | tlc | tlc |
| Controller | Phison PS5018-E18 | Phison PS5026-E26 |
How these two compare
Sequential throughput
PNY XLR8 CS3140 4TB states 7500 MB/s read and 6850 MB/s write; TeamGroup T-Force Z540 4TB states 12400 MB/s read and 11800 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
Endurance
PNY XLR8 CS3140 4TB is rated for 3000 TBW and TeamGroup T-Force Z540 4TB for 2400 TBW — the total the maker warrants you can write over the drive's life. A typical desktop writes only a few terabytes a year, so either rating is many years of headroom; the figure matters mainly as a relative signal of how hard each is built to be driven.
DRAM cache
On the cache question: PNY XLR8 CS3140 4TB carries a DRAM cache, and TeamGroup T-Force Z540 4TB carries a DRAM cache. The DRAM keeps the flash-translation table close, sparing a lookup on nearly every access; a drive without it leans on host memory or its own flash, which usually shows as slower sustained random writes rather than in the headline sequential numbers.
NAND, controller and warranty
On the flash itself: PNY XLR8 CS3140 4TB uses TLC, and TeamGroup T-Force Z540 4TB uses TLC. NAND tiers count bits per cell — more bits pack more capacity into the same silicon but shorten write endurance and slow sustained writes, which is why QLC sits below TLC on lasting performance even when the sequential numbers match. Controller: PNY XLR8 CS3140 4TB uses the Phison PS5018-E18 and TeamGroup T-Force Z540 4TB uses the Phison PS5026-E26. The controller runs wear-levelling, error correction and the mapping table, so it shapes sustained and random behaviour as much as the flash does — though the model name alone predicts little without testing. PNY XLR8 CS3140 4TB carries a 5-year warranty and TeamGroup T-Force Z540 4TB carries a 5-year warranty — the length the maker will stand behind the drive, and usually a proxy for the endurance it is rated to.
Which to buy
The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.
Common questions about this pair
- Which is faster, PNY XLR8 CS3140 4TB or TeamGroup T-Force Z540 4TB?
- PNY XLR8 CS3140 4TB states 7500 MB/s read and 6850 MB/s write; TeamGroup T-Force Z540 4TB states 12400 MB/s read and 11800 MB/s write, both over PCIe. Sequential numbers like these describe large sustained transfers; the responsiveness you notice day to day tracks random access more closely than the peak figures do.
- Should you buy PNY XLR8 CS3140 4TB or TeamGroup T-Force Z540 4TB?
- The site holds no current price for at least one of these, so it cannot call the buy on cost. Judge them on the specifications above — at the same capacity and interface, two drives usually part on things like the DRAM cache, the NAND tier, endurance and warranty, so weigh whichever of those the sections above report.