ADATA XPG Gammix S70 2 TB Review — PCIe 4.0 NVMe (2026)
The ADATA XPG Gammix S70 2 TB was one of the first Innogrit-based PCIe 4.0 NVMe flagships \xe2\x80\x94 a Micron-TLC drive bolted under a big aluminium heatsink, with a 1,480 TBW warranty.
Controller & Memory
The ADATA XPG Gammix S70 2 TB is a launch-era PCIe 4.0 NVMe drive that pairs the Innogrit IG5236 — a 12 nm eight-channel controller — with Micron 96-layer 3D TLC NAND and a dedicated DRAM cache, all packaged under a large finned aluminium heatsink that ADATA bolts to the top of the M.2 2280 PCB. The drive shipped at the same time as the first Phison E18 flagships and was, at launch, one of the few Gen 4 platforms not built on a Phison controller. The big heatsink keeps the controller cool but adds enough vertical height that the S70 does not fit cleanly in tight motherboard slots or thin laptops; ADATA later released the slimmer XPG Gammix S70 Blade for those installations.
At 2 TB the S70 hits the family’s top rated numbers: 7,400 MB/s sequential reads and 6,400 MB/s sequential writes, with up to 650,000 random read IOPS and 740,000 random write IOPS. Those are top-of-Gen-4 figures for the 2021 launch window and still credible in 2026, although newer in-house controllers from Samsung and Sandisk run faster and cooler at the same nominal speed. The closest direct rivals at 2 TB are the Samsung 990 Pro 2 TB (in-house TLC, no bundled heatsink), the WD Black SN850X 2 TB (Sandisk in-house TLC, optional heatsink), and the Sabrent Rocket 4 Plus 2 TB (Phison E18, similar reference platform). The S70’s case is the bundled high-profile heatsink and a strong 1,480 TBW endurance figure; its weakness is the heatsink itself blocking PS5 and small-form-factor desktop use.
The target audience is a full-tower or mid-tower desktop with a free M.2 slot that has clearance for the large heatsink, where the controller cooling argument outweighs the install awkwardness. It is not the right pick for a PS5 expansion bay (the heatsink is too tall), nor for a thin laptop or a motherboard slot under a covered M.2 shroud.
Storage Comparisons:
XPG Gammix S70 Performance & Benchmarks
ADATA rates the XPG Gammix S70 2 TB at up to 7,400 MB/s sequential reads and 6,400 MB/s sequential writes on a PCIe 4.0 x4 link, with random IOPS of up to 650,000 reads and 740,000 writes. Those numbers sit inside the top tier of Gen 4 drives on the headline sequential figures — indistinguishable in real-world Windows game-load and DirectStorage tests from the Sabrent Rocket 4 Plus 2 TB on the same Phison-class platform, and within a few percent of the Samsung 990 Pro 2 TB on most benchmark suites.
ADATA XPG Gammix S70 2 TB vs M.2 4.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- ADATA XPG Gammix S70 2 TB (this drive): 7,400 MB/s read, 6,400 MB/s write
The SLC cache behaviour at 2 TB is the practical strength of the drive. With twice the NAND of the 1 TB sibling, the dynamic SLC cache is correspondingly larger, and independent reviewers consistently find the S70 2 TB completes single-session 400-plus-gigabyte transfers largely inside the SLC region. Once the cache exhausts post-cache speeds settle into the 1.5 GB/s to 2 GB/s range. The large heatsink keeps the Innogrit IG5236 well below its throttle threshold under sustained writes, which was an early selling point of the S70 versus competing Phison E18 drives without bundled cooling. For video editors, content creators, and gamers writing multi-hundred-gigabyte files in one continuous pour, the heatsink-equipped S70 2 TB is a credible workhorse.
ADATA XPG Gammix S70 vs Competitors
See how the XPG Gammix S70 stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
ADATA rates the XPG Gammix S70 2 TB at 1,480 TBW (terabytes written) over a 5-year limited warranty, whichever limit is reached first. That endurance figure is among the highest in the Gen 4 flagship segment \xe2\x80\x94 ahead of the Samsung 990 Pro 2 TB at 1,200 TBW and the WD Black SN850X 2 TB at 1,200 TBW \xe2\x80\x94 and corresponds to roughly 810 GB of host writes every single day for the full warranty window, vastly above what any gamer or even an active creator generates. At a more realistic 30 GB/day workload the rated 1,480 TBW corresponds to over 130 years of nominal life before the counter is exhausted. ADATA does not publish a consumer MTBF figure for this drive. Warranty service is handled directly via ADATA RMA with proof of purchase and the bundled XPG SSD Toolbox utility on Windows. The TBW scales with capacity: 740 TBW at 1 TB.
ADATA XPG Gammix S70 2 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 2 TB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Innogrit IG5236 |
| Memory type [?] | Micron 3D TLC |
| DRAM [?] | DRAM SLC |
| Read speed (MB/s) [?] | 7400 |
| Write speed (MB/s) [?] | 6400 |
| Read IOPS [?] | 650000 |
| Write IOPS [?] | 740000 |
| Endurance (TBW) [?] | 1480 |
| MTBF (million hours) [?] | 2000000 |
| Warranty (years) [?] | 5 |
Verdict: Is the XPG Gammix S70 Worth It in 2026?
The ADATA XPG Gammix S70 2 TB earns its slot if you want a Gen 4 NVMe flagship that ships with a serious finned heatsink and a higher-than-average 1,480 TBW endurance rating, and your motherboard has clearance for the heatsink\xe2\x80\x99s extra height. Skip it if you need to install in a PS5 (the heatsink is too tall), in a laptop, or in any slot covered by a motherboard M.2 shroud \xe2\x80\x94 the S70 Blade is the right SKU for those, with the same controller and NAND in a thinner package. The closest direct alternative without the heatsink is the Sabrent Rocket 4 Plus 2 TB (Phison E18, similar reference platform); the in-house-controller alternatives are the Samsung 990 Pro 2 TB and WD Black SN850X 2 TB, both of which are more compact. For a desktop with motherboard clearance the S70 2 TB is a strong, endurance-friendly flagship pick.
+ Pros
- 7,400 MB/s sequential reads on PCIe 4.0
- 1,480 TBW endurance with 5-year warranty
- Bundled finned aluminium heatsink
- Innogrit IG5236 controller with DRAM cache
- 740K random write IOPS at 2 TB capacity
- Micron 96-layer 3D TLC NAND
- Cons
- Heatsink too tall for PS5 expansion slot
- Heatsink fouls motherboard M.2 shrouds
- Not suitable for thin laptops
- 6,400 MB/s writes trail current 2 TB flagships
- Older 96-layer NAND versus newer 176-layer
Buy this or similar SSD Storage:
Video Review
ADATA XPG GAMMIX S70 SSD Review - Is This The NEW Score to Beat?
