# Inside the Heatsink-Equipped Silicon Power XS70 2 TB (2026)

The Silicon Power XS70 2 TB ships with a heatsink in the box and hits 7,300 MB/s reads on the Phison E18 platform, backed by 1,400 TBW of endurance.

Quick answer: The Silicon Power XS70 2 TB is the pick for buyers who want a PCIe 4.0 drive that arrives PS5-ready with a heatsink already fitted, matching the 7,300 MB/s read ceiling of the E18 platform with the cooler included. It is the wrong choice for a laptop, where the fixed 10.8 mm heatsink will not clear most M.2 slots, and a poor fit on a motherboard that already ships with its own M.2 heatsink, since the bundled cooler becomes a redundant second layer that cannot be easily removed. The closest direct rival is the Kingston KC3000 2 TB, which uses the same Phison E18 and Micron TLC recipe and carries slightly higher 1,600 TBW endurance but ships bare, so the decision usually comes down to whether a heatsink is needed in the box. Our take: a sensible, no-surprises Gen4 drive whose bundled cooler makes it one of the cleanest PS5 upgrade picks in its capacity class.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 2 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5018-E18 |
| Memory type | Micron 3D TLC |
| DRAM cache | Samsung DDR4 |
| Sequential read | 7300 MB/s |
| Sequential write | 6800 MB/s |
| Random read IOPS | 1000000 |
| Random write IOPS | 1000000 |
| Endurance | 1400 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

The 2 TB XS70 is rated at 7,300 MB/s sequential reads and 6,800 MB/s sequential writes over a PCIe 4.0 x4 link, with random performance quoted at up to one million read IOPS and one million write IOPS. Those are peak numbers that sit at the practical ceiling of the Phison E18 platform, and the 2 TB hits the full write figure where the cheaper 1 TB variant is capped at 6,000 MB/s.

In real-world terms the gap between the XS70 and any other top PCIe 4.0 drive is small once past the headline spec sheet. Game load times, where the CPU and asset decompression are usually the bottleneck, are effectively indistinguishable from a Samsung 990 Pro or WD Black SN850X. The payoff for the extra bandwidth shows up in sequential workloads: copying a large game library, scrubbing 4K footage on a video timeline, or moving a virtual machine image between drives.

Like every E18 drive, the XS70 leans on a pseudo-SLC cache that absorbs writes at the full 6,800 MB/s until it fills, after which writes settle to the native Micron TLC rate, a fraction of the cached speed, under a long contiguous copy. Independent reviewers including StorageReview and TechPowerUp place the XS70 within a few percent of the Kingston KC3000 and Sabrent Rocket 4 Plus on the usual suites, which is expected given the shared E18 plus B47R recipe. Thermals are well controlled thanks to the bundled heatsink; Guru3D found the pre-fitted heatsink kept the controller comfortable under sustained writes.

## Endurance, TBW & Warranty

Silicon Power backs the XS70 2 TB with a five-year limited warranty that ends early if the 1,400 TBW endurance rating is exceeded, whichever comes first. That 1,400 TBW figure sits in the middle of a lineup that scales from 700 TBW on the 1 TB through 3,000 TBW on the 4 TB, holding roughly 700 TBW per terabyte. At a fairly heavy consumer workload of around 30 GB of writes per day the drive would need close to 128 years to wear out the NAND, so in practice the five-year term expires long before the flash does. Even a professional video pipeline writing 100 GB a day would take nearly four decades. Silicon Power rates the XS70 at 2 million hours MTBF; treat that as a population-reliability statistic across a fleet of drives rather than a lifespan promise for any single unit.

## Pros and Cons

**Pros:**

- 7,300/6,800 MB/s near the PCIe 4.0 ceiling
- Included graphene heatsink, PS5-ready out of the box
- Phison E18 with DDR4 DRAM cache
- 1,400 TBW endurance over five years
- Micron 176-layer 3D TLC NAND
- Up to 1 million random read IOPS
**Cons:**

- Fixed 10.8 mm heatsink blocks laptop slots
- Heatsink wasted on boards with their own
- 2022 release predates Samsung 990 Pro
- Brand recognition trails Samsung and Kingston
- Writes trail KC3000's 7,000 MB/s


## Verdict

The Silicon Power XS70 2 TB is the pick for buyers who want a PCIe 4.0 drive that arrives PS5-ready with a heatsink already fitted, matching the 7,300 MB/s read ceiling of the E18 platform with the cooler included. It is the wrong choice for a laptop, where the fixed 10.8 mm heatsink will not clear most M.2 slots, and a poor fit on a motherboard that already ships with its own M.2 heatsink, since the bundled cooler becomes a redundant second layer that cannot be easily removed. The closest direct rival is the Kingston KC3000 2 TB, which uses the same Phison E18 and Micron TLC recipe and carries slightly higher 1,600 TBW endurance but ships bare, so the decision usually comes down to whether a heatsink is needed in the box. Our take: a sensible, no-surprises Gen4 drive whose bundled cooler makes it one of the cleanest PS5 upgrade picks in its capacity class.

## Frequently Asked Questions

### Is the Silicon Power XS70 2 TB good for gaming?

The XS70 2 TB is more than fast enough for gaming, though like every PCIe 4.0 drive it will not load games meaningfully quicker than a cheaper Gen4 stick. Its 7,300 MB/s sequential reads sit at the PCIe 4.0 ceiling, but game load times are usually bounded by CPU and asset decompression, so a Samsung 990 Pro or WD Black SN850X feels identical in most titles. The real upsides for a gamer are the 2 TB of library space and the bundled heatsink, which means it drops straight into a PS5 or a desktop without buying a separate cooler. For a pure PC gaming rig, any competent Gen4 drive will do; choose the XS70 when the included heatsink saves you a step.

### Does the Silicon Power XS70 2 TB work in a PS5?

Yes, and it is one of the better out-of-the-box PS5 picks because the heatsink is already fitted. Sony requires an M.2 NVMe SSD recommending at least 5,500 MB/s sequential reads and fitting within 110 by 25 by 11.25 millimetres with a heatsink attached, and the XS70 2 TB clears all three: 7,300 MB/s reads, 80 by 24.6 by 10.8 millimetre dimensions, and a pre-installed graphene heatsink. The 2 TB capacity holds a large game library, and the 1,400 TBW endurance is far more than a console will ever write. You pay no PS5 penalty here, since the drive is PCIe 4.0 and matches the console's expansion slot exactly.

### Does the XS70 have a DRAM cache?

Yes, the XS70 uses a discrete DDR4 DRAM cache alongside the Phison PS5018-E18 controller and Micron 176-layer TLC NAND. TechPowerUp confirmed a 1 GB Samsung DDR4-2666 module on the 1 TB, and the 2 TB carries the corresponding 2 GB on the same E18 platform. The DRAM holds the flash translation layer mapping table, which keeps random reads and writes quick as the drive fills, a real advantage over DRAM-less HMB designs that have to borrow system memory. On a 2 TB module this matters more than on the 1 TB, since the mapping table scales with flash size and the drive stays responsive under sustained mixed workloads.

### What is the TBW endurance of the 2 TB XS70?

The 2 TB XS70 is rated at 1,400 TBW, the middle figure in a lineup that scales from 700 TBW on the 1 TB through 3,000 TBW on the 4 TB. That works out to roughly 128 years at a heavy 30 GB of writes per day, and close to four decades even at a 100 GB-per-day professional video workload, so the flash will outlast the five-year warranty by a wide margin. The 1,400 TBW figure is competitive with other 2 TB E18 drives like the Sabrent Rocket 4 Plus and sits just under the Kingston KC3000's 1,600 TBW, so endurance is not a reason to pick a rival over this drive.

### Does the XS70 2 TB need a heatsink?

It already includes one, so you do not need to buy a separate heatsink. Every XS70 ships with a graphene-and-aluminium heat spreader moulded into a shark-fin shape that lifts the module to about 10.8 mm thick, and Guru3D found that pre-fitted heatsink kept the controller comfortable under sustained writes. That matters because the Phison E18 runs warm under long contiguous copies, and a bare E18 drive in a cramped slot can throttle. The trade-off is thickness: the 10.8 mm assembled height will not fit most laptop M.2 slots, which expect a bare stick, so the XS70 is a desktop and console drive first and a laptop drive rarely.

### How does the XS70 2 TB compare to the Kingston KC3000 2 TB?

The two are close stablemates, since both pair the Phison PS5018-E18 with Micron 176-layer TLC. The Kingston KC3000 2 TB rates 7,000/7,000 MB/s against the XS70's 7,300/6,800 MB/s, so the XS70 edges reads while the KC3000 edges writes, and both load games identically. The KC3000 carries slightly higher 1,600 TBW endurance versus 1,400 TBW, but it ships bare, while the XS70 includes the heatsink. If your motherboard already has an M.2 heatsink the KC3000 is the tidier pick; if you need a PS5-ready drive with the cooler included, the XS70 wins.

### Can I use the XS70 in a laptop?

Generally no, and the reason is the heatsink rather than the capacity. The XS70's pre-installed graphene heatsink lifts the module to about 10.8 mm thick, and most laptop M.2 slots are designed for bare drives around 3.5 mm with no room for an add-on cooler. Even where the slot is single-sided and physically compatible, the heatsink fouls the chassis, and you cannot easily remove it. For a 2 TB NVMe in a laptop, a bare single-sided drive like the Samsung 990 Pro or a DRAM-less HMB stick such as the WD Blue SN580 is a safer fit.

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Last updated: 2026-07-09. Source: https://ssdrive.net/silicon-power-xs70-2-tb