Near the ceiling of PCIe 5.0 sequential performance
The PNY XLR8 CS3250 2TB pairs Phison's E28 controller with 232-L TLC NAND to achieve some of the highest sequential transfer speeds in the consumer PCIe 5.0 SSD market.
The 2TB capacity is the most widely reviewed variant of PNY's XLR8 CS3250, and it has earned strong marks from outlets including TweakTown, FunkyKit, and multiple European review sites. The hardware consists of Phison's E28 eight-channel controller paired with 232-layer TLC NAND and dedicated LPDDR4 DRAM. This is PNY's second-generation PCIe 5.0 platform, replacing the CS3150's older Phison E26 controller with a more efficient design that pushes sequential speeds past 14,000 MB/s on both read and write operations.
The CS3250 is a bare M.2 2280 module without an integrated heatsink. PNY's CS3150 model included a dual-fan RGB heatsink, but the CS3250 is designed for motherboards that provide their own M.2 cooling solutions. The 2TB capacity uses additional NAND die compared to the 1TB model, enabling higher write speeds through increased interleaving across the controller's eight channels.
Within the Gen5 SSD market, the CS3250 2TB competes with the Samsung 9100 Pro, Crucial T705, Acer Predator GM9000, Corsair MP700 Pro, and Kingston FURY Renegade 5.0. The CS3250's standout specification is its 14,900 MB/s sequential read speed, which is among the highest figures published by any consumer SSD manufacturer. The TweakTown review called the CS3250 an ultra-elite enthusiast SSD, while FunkyKit rated it 4.5 out of 5.
The drive supports NVMe 2.0 and is backward-compatible with PCIe 4.0 motherboards, though speeds will be capped at approximately 7,400 MB/s by the Gen4 bus bandwidth limit. For full performance, a PCIe 5.0 x4 M.2 slot is required.
✅ Storage Comparisons:
🚀 Performance and benchmarks
PNY rates the CS3250 2TB at up to 14,900 MB/s sequential read and up to 14,000 MB/s sequential write. The write speed for the 2TB model is higher than the 1TB's 13,500 MB/s due to the additional NAND die providing more write interleaving headroom. Random performance specifications are not published by PNY, but the Phison E28 platform supports multi-million IOPS throughput consistent with other Gen5 controllers.
PNY XLR8 CS3250 2 TB vs M.2 5.0 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 5.0 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- PNY XLR8 CS3250 2 TB (this drive): 14,900 MB/s read, 14,000 MB/s write
- PNY XLR8 CS3250 1 TB: 14,900 MB/s read, 13,500 MB/s write
- Netac NV150HK 4 TB: 14,000 MB/s read, 13,000 MB/s write
- Corsair MP700 1 TB: 10,000 MB/s read, 9,500 MB/s write
- Corsair MP700 2 TB: 10,000 MB/s read, 9,500 MB/s write
The FunkyKit review confirmed that the 2TB CS3250 reaches its rated sequential speeds in CrystalDiskMark testing. The LPDDR4 DRAM cache provides consistent mapping table access during sustained workloads, preventing the performance cliffs that DRAM-less drives can exhibit under heavy concurrent I/O.
Like all TLC-based SSDs, the CS3250 uses an SLC write cache that absorbs burst writes at full speed before transitioning to native TLC write rates on extended transfers. At 2TB, the cache is proportionally larger than on the 1TB model, giving more headroom for large file transfers. The Phison E28 controller manages power consumption better than the earlier E26, though the drive still benefits from direct motherboard heatsink contact to prevent throttling under sustained writes.
🖥️ Endurance and warranty
PNY backs the XLR8 CS3250 with a five-year limited warranty. The 2TB model carries a 1,200 TBW endurance rating. At 1,200 TBW over five years, that equals roughly 658 GB of writes per day to exhaust the warranty threshold. Typical consumer workloads involve well under 50 GB of daily writes, providing substantial endurance headroom for gaming, content creation, and general productivity. The drive supports SMART health monitoring through standard utilities like CrystalDiskInfo, where you can track total bytes written and remaining spare block capacity over the life of the drive. The 4TB model carries proportionally higher endurance at 2,400 TBW.
📊 Specs
| Category | Value |
|---|---|
| Capacity [?] | 2 TB |
| Interface [?] | M.2 5.0 |
| Controller [?] | Phison E28 |
| Memory type [?] | 232-L TLC |
| DRAM [?] | Yes |
| Read speed (MB/s) [?] | 14900 |
| Write speed (MB/s) [?] | 14000 |
| Read IOPS [?] | 14900 |
| Write IOPS [?] | 13500 |
| Endurance (TBW) [?] | 1200 |
| MTBF (million hours) [?] | 2000000 |
| Warranty (years) [?] | 5 |
Conclusion
The PNY XLR8 CS3250 2TB is a top-tier Gen5 SSD that delivers some of the fastest sequential transfer speeds available in the consumer market. Reviewers have praised its consistency and speed, with TweakTown calling it an ultra-elite enthusiast drive. The Phison E28 plus 232-L TLC combination provides a modern, efficient platform. Buyers comparing against the Acer Predator GM9000 2TB should note that the GM9000 offers higher endurance at 3,200 TBW versus 1,200 TBW, while both drives deliver similar read performance. For desktop enthusiasts who prioritize raw sequential speed and have PCIe 5.0 motherboards with adequate M.2 cooling, the CS3250 2TB is a strong contender.
+ Pros
- 14,900 MB/s read and 14,000 MB/s write are top-tier
- Phison E28 controller with LPDDR4 DRAM
- 232-L TLC NAND on an eight-channel architecture
- Five-year warranty with 1,200 TBW endurance
- Strong benchmark results confirmed by reviewers
- More efficient than the older Phison E26 platform
- Cons
- No included heatsink in standard retail packaging
- Requires PCIe 5.0 motherboard for full speeds
- 1,200 TBW endurance trails the Acer GM9000 at 3,200 TBW
- PNY does not disclose the specific NAND manufacturer
- Premium pricing typical of high-end Gen5 drives
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