Intel 665p 2 TB — High-Capacity QLC NVMe with DRAM (2026)

Name: Intel 665P 2 TB
Brand: Intel
SKU: intel-665p-2-tb
Rating: 3.8 (118 reviews)

Posted on May 23, 2026 by Raymond Chen

Intel's 665p 2 TB pairs a DRAM-equipped SM2263EN controller with 96-layer QLC NAND and 600 TBW endurance — one of the best-value 2 TB NVMe drives of the PCIe 3.0 era for game libraries and everyday storage.

Intel 665p 2 TB — High-Capacity QLC NVMe with DRAM

Controller & Memory

The Intel 665p is built on the Silicon Motion SM2263EN, a 4-channel PCIe 3.0 x4 controller with a dedicated DRAM cache, paired with Intel's 96-layer 3D QLC NAND. The 2 TB variant doubles both the NAND capacity and the DRAM cache to 2 GB of DDR3, following the standard 1 MB per 1 GB ratio. QLC NAND stores 4 bits per cell, trading raw write speed and endurance for density and cost — Intel compensates with a large dynamic SLC write cache that can consume up to roughly 600 GB of free space on the 2 TB model, buffering consumer writes at full 2,000 MB/s speed until the cache fills.

The 2 TB capacity is where QLC economics shine brightest. The cost-per-gigabyte advantage over TLC is most pronounced at higher capacities, and the larger total NAND pool means the SLC cache is proportionally larger and less likely to be exhausted in everyday use. Intel also offered 512 GB and 1 TB variants; the 2 TB model carries a 600 TBW endurance rating — double the 1 TB's 300 TBW. The drive uses a single-sided M.2 2280 form factor despite the higher capacity, fitting in thin laptops and ultrabooks without clearance issues.

At launch, the 665p 2 TB competed against TLC alternatives like the WD Blue SN550 2 TB (DRAM-less), the Crucial P5 2 TB (faster but pricier), and the Samsung 970 EVO Plus 2 TB (significantly faster and significantly more expensive). The 665p's pitch was straightforward: TLC-class everyday responsiveness thanks to DRAM, 2 TB of QLC storage for less than most 2 TB TLC drives, and Intel's 5-year warranty. In 2026, it remains a solid budget bulk-storage option for a PCIe 3.0 system — ideal for a large game library, media collection, or secondary drive where the QLC write ceiling is rarely encountered.

Storage Comparisons:

Top 2 TB SSDs Top PCIe 3.0 SSD Drives Best Deal of 1 TB SSDs NVME

665P Performance & Benchmarks

Intel rates the 665p 2 TB at 2,000 MB/s sequential reads and 2,000 MB/s sequential writes, with random performance of 250,000 IOPS read and write. These figures are identical to the 1 TB variant and are modest by PCIe 3.0 x4 standards — TLC drives in this class typically reach 3,000–3,500 MB/s reads. The 665p's real-world advantage is its massive dynamic SLC cache: the 2 TB model can allocate up to roughly 600 GB of free capacity as a high-speed write buffer, meaning almost all consumer write operations — game installs, file transfers, media ingestion — complete at full speed without ever touching the native QLC write rate.

Performance comparison

Intel 665P 2 TB vs M.2 3.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 3.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

ADATA SX 8800 Pro 512 GB: 3,500 MB/s read, 2,700 MB/s write
ADATA SX 8800 Pro 1 TB: 3,500 MB/s read, 2,700 MB/s write
ADATA XPG Spectrix S40G RGB 256 GB: 3,500 MB/s read, 3,000 MB/s write
ADATA XPG Spectrix S40G RGB 512 GB: 3,500 MB/s read, 3,000 MB/s write
Intel 665P 2 TB (this drive): 2,000 MB/s read, 2,000 MB/s write

When the SLC cache does fill — which requires a sustained write of hundreds of gigabytes in one go — speeds drop to the native QLC rate of approximately 100–150 MB/s. For a drive primarily used for game storage, media files, and general desktop workloads, this scenario is rare. The 2 TB capacity also means the drive is less likely to be operated near full, which helps the dynamic cache algorithm allocate more SLC space. The DRAM cache keeps random read latency competitive with TLC drives at low queue depths, so boot times and application launches feel snappy. Content creators who regularly ingest large video files or run sustained write workloads should note the QLC write cliff and consider a TLC alternative.

Intel 665P vs Competitors

See how the 665P stacks up against other M.2 3.0 x 4 drives in our database:

Compare with rival drives:

Crucial P1 2 TB OWC Mercury M.2 2 TB ADATA Swordfish 2 TB

Endurance, TBW & Warranty

Intel backs the 665p 2 TB with a 5-year limited warranty and rates endurance at 600 TBW — double the 1 TB variant's 300 TBW. At a typical consumer workload of 30 GB per day (reflecting the 2 TB drive's role as a primary storage device), the endurance rating translates to roughly 55 years of use. Even at 100 GB per day — a heavy write workload — the drive would last over 16 years. The 600 TBW figure is competitive with entry-level TLC drives at this capacity and, combined with the 5-year warranty, makes the 665p one of the more reassuring QLC purchases. Intel's warranty service includes advance replacement and cross-shipping in many regions. For a drive primarily used for game storage and media, endurance is unlikely to be a practical concern within or well beyond the warranty period.

Intel 665P 2 TB Specifications

Category	Value
Capacity [?]	2 TB
Interface [?]	M.2 3.0 x 4
Controller [?]	Silicon Motion SM2263EN
Memory type [?]	Intel 96L 3D QLC
DRAM [?]	DDR3L
Read speed (MB/s) [?]	2000
Write speed (MB/s) [?]	2000
Read IOPS [?]	250000
Write IOPS [?]	250000
Endurance (TBW) [?]	600
MTBF (million hours) [?]	1200000
Warranty (years) [?]	5

Verdict: Is the 665P Worth It in 2026?

The Intel 665p 2 TB is the QLC drive that makes the strongest case for QLC as a viable consumer technology. The 2 TB capacity provides enough SLC cache headroom that most users will never encounter the QLC write cliff, and the DRAM-equipped SM2263EN controller delivers everyday responsiveness that feels closer to a mid-range TLC drive than a budget QLC one. Buy it if you need affordable 2 TB NVMe storage for a PCIe 3.0 system and your workload is typical — games, media, documents, applications. The 600 TBW endurance and 5-year warranty remove most of the anxiety around QLC longevity. Skip it if you regularly write large files — video editors, data hoarders, and anyone running sustained write workloads will hit the QLC wall and should buy TLC. Skip it also if your system supports PCIe 4.0, where modern 2 TB TLC drives offer vastly more bandwidth. For the right use case, the 665p 2 TB remains one of the most sensibly engineered QLC SSDs Intel ever shipped.

+ Pros

DRAM-equipped SM2263EN controller — rare for QLC drives
2 GB DDR3 DRAM cache for low-latency random I/O
Dynamic SLC cache up to ~600 GB absorbs burst writes
600 TBW endurance — competitive with entry-level TLC at 2 TB
5-year warranty — among the longest in the consumer SSD market
Single-sided M.2 2280 despite 2 TB capacity

- Cons

Write speed drops to ~100 MB/s after SLC cache exhausts
2,000 MB/s reads trail PCIe 3.0 x4 TLC drives significantly
QLC NAND — lower native endurance than TLC alternatives
No PCIe 4.0 support — not PS5 compatible
No hardware encryption support

3.8 / 5 · 118 votes

Buy this or similar SSD Storage:

Samsung 980 Pro 2 TB

-57% $165
List Price: $379.99

Buy on Amazon

INLAND Performance Plus 1 TB

$79.99

Buy on Amazon

Silicon Power 512GB NVMe SSD

$42.97

Buy on Amazon

Video Review

How SSD Technology Keeps Getting WORSE! - Intel 660p Review

Frequently Asked Questions

Yes, it is an excellent game-library drive for a PCIe 3.0 system. The 2 TB capacity fits a large collection of modern games, and the DRAM cache delivers fast level load times. The huge dynamic SLC cache — up to roughly 600 GB on a low-utilisation drive — means game installs and updates complete at full speed. Even on a half-full drive, the SLC cache is large enough to handle a 100 GB+ game install without dipping into QLC speeds. DirectStorage support is limited on this controller generation, but the real-world impact on PCIe 3.0 is minimal. For a dedicated gaming PC on a PCIe 3.0 platform, the 665p 2 TB is a cost-effective single-drive solution.

Intel rates the 665p 2 TB at 600 TBW (terabytes written) — double the 1 TB variant's 300 TBW. At a typical consumer workload of 30 GB per day, the drive would last roughly 55 years before reaching its endurance rating. Even at a very heavy 100 GB daily write load, it would last over 16 years. The 600 TBW figure is competitive with entry-level TLC drives at this capacity. Intel's 5-year warranty provides additional assurance — the drive is covered for the full five years as long as the endurance rating has not been exceeded. For a game-library or media drive, endurance is unlikely to be a practical concern.

Yes. The 665p 2 TB includes 2 GB of DDR3 DRAM via the Silicon Motion SM2263EN controller, following the standard 1 MB per 1 GB cache ratio. The DRAM cache stores the flash translation layer mapping table, which reduces random read and write latency and lowers write amplification. This is the 665p's key advantage over DRAM-less QLC drives — everyday responsiveness feels closer to a mid-range TLC drive than a budget QLC one, particularly under mixed read/write workloads. For an OS-plus-games drive, the DRAM cache contributes to faster boot times and snappier application launches.

The peak sequential and random performance ratings are identical: 2,000 MB/s reads and writes, 250,000 IOPS for both capacities. The 2 TB model's advantage is in sustained real-world performance: the larger total NAND capacity means the dynamic SLC cache can be up to twice as large (roughly 600 GB vs 300 GB), and the drive maintains higher performance further into its fill level. The 2 TB model also has double the DRAM (2 GB vs 1 GB) and double the endurance (600 TBW vs 300 TBW). If the budget allows, the 2 TB 665p is the better drive for both capacity and sustained performance.

The Crucial P3 2 TB is a newer PCIe 3.0 QLC drive using Micron 176-layer QLC NAND and a DRAM-less Phison E21T controller. The Intel 665p has a DRAM cache, which gives it an edge in random I/O latency and sustained mixed-workload responsiveness. The Crucial P3's newer NAND provides a modest efficiency advantage and a slightly larger SLC cache. In practice, the 665p's DRAM makes it feel snappier for everyday desktop use, while the P3 handles sustained writes with marginally less severe cache-exhaustion penalties. Both are competent 2 TB QLC budget drives. The 665p's 5-year warranty (versus the P3's typically 3-year coverage) is a meaningful differentiator.

No. The PS5 requires a PCIe 4.0 x4 NVMe SSD with a minimum recommended read speed of 5,500 MB/s. The 665p uses PCIe 3.0 x4 and peaks at 2,000 MB/s reads — well below both requirements. The console firmware will reject any drive that does not support PCIe 4.0. For PS5 storage, look at PCIe 4.0 drives such as the WD Black SN850X, Samsung 980 Pro, or Crucial T500.

When the dynamic SLC cache is exhausted — typically during a sustained write that exceeds the available cache space — write speeds drop from 2,000 MB/s to the native QLC rate of approximately 100–150 MB/s. This is the defining characteristic of QLC SSDs. On the 2 TB model, the cache can be up to roughly 600 GB on an empty drive, so cache exhaustion requires a very large sustained write. On a drive that is 75% full, the cache might be around 120 GB — still large enough for most consumer operations. The cache recovers automatically during idle periods as the controller reorganises data from SLC to QLC in the background. For typical desktop and gaming use, cache exhaustion is rare.