fanxiang S770 4TB NVMe M.2 SSD

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84%
88%
Read Speed Performance
82%
Write Speed Consistency
93%
PS5 Compatibility
86%
Thermal Management
84%
Value for Money
67%
Brand Trust & Reliability
91%
Installation Experience
96%
Storage Capacity
79%
Random Read/Write Speed
77%
Build & Physical Quality
87%
PC Gaming Performance
81%
Customer Support
83%
Advertised vs. Actual Specs
More

Overview

The fanxiang S770 4TB NVMe M.2 SSD enters a crowded market with a clear pitch: serious capacity and PCIe 4.0 performance without the premium brand markup. fanxiang is a Chinese manufacturer that has been steadily building credibility in Western markets, and this drive represents one of their most ambitious offerings. It ships with a heatsink already in the box — a practical detail that saves PS5 owners from hunting down a separate accessory before installation. For anyone who has watched their console or PC storage fill up faster than expected, the appeal of a single 4TB upgrade that handles both gaming and general storage is straightforward.

Features & Benefits

On paper, the numbers look strong. This fanxiang SSD hits sequential read speeds of up to 7,300MB/s on a PC — competitive with the faster drives in this category. On PS5, Sony's firmware caps things lower, so expect closer to 6,300MB/s, which is still comfortably above the console's minimum requirement. The included DRAM cache makes a real difference under sustained workloads, keeping random read and write performance consistent where cache-less drives tend to stall. The 3D NAND TLC flash is the right call at this capacity, balancing write endurance with cost in a way that makes 4TB practical. A five-year warranty rounds out the package.

Best For

This NVMe upgrade makes the most sense for PS5 storage expansion — owners who have maxed out their internal storage and want one high-capacity solution rather than juggling multiple drives. It works equally well as a secondary game drive in a PC build: fast enough to handle large titles without hesitation, spacious enough that most users won't outgrow it for years. Creative professionals dealing with large video or photo libraries will find the capacity genuinely useful too. If your priority is speed and value and you're not willing to pay what Samsung or WD Black charge for comparable storage, the S770 4TB drive makes a strong argument.

User Feedback

Across nearly 2,800 ratings, this fanxiang SSD holds a 4.5-star average — a number that carries real weight at that volume. Most buyers confirm the PS5 installation goes smoothly, and PC benchmarks in reviews track closely with the advertised figures. The heatsink draws the occasional complaint about bulk, but most users are glad it's there once temperatures climb during extended sessions. The fair concern to raise is brand familiarity: fanxiang doesn't carry the multi-decade track record of the bigger storage names, and a small number of buyers note that. Countering this, several reviewers specifically praised responsive customer support, which helps build confidence in a brand still establishing its reputation.

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Pros

  • Delivers up to 7,300MB/s sequential read on PC, competitive with top-tier PCIe 4.0 drives.
  • 4TB capacity means most users will not need to think about storage management for years.
  • Heatsink is included in the box, saving PS5 owners an extra purchase and extra hassle.
  • DRAM cache keeps random read and write speeds consistent under sustained, heavy workloads.
  • Real-world PS5 installation is straightforward, confirmed by the majority of verified buyers.
  • Five-year warranty provides meaningful long-term coverage for a drive at this price tier.
  • PC benchmark results from buyers closely match the advertised specifications.
  • Customer support responsiveness has been specifically praised in multiple owner reviews.
  • 3D NAND TLC flash offers a practical balance of endurance and cost at the 4TB capacity point.
  • Strong 4.5-star average across nearly 2,800 ratings reflects broad, consistent buyer satisfaction.

Cons

  • fanxiang lacks the multi-decade brand track record of established storage names like Samsung or Western Digital.
  • A minority of buyers have raised long-term reliability concerns, which cannot be fully dismissed.
  • PS5 firmware limits actual read speeds to around 6,300MB/s, well below the advertised PC maximum.
  • The bundled heatsink adds physical bulk that may cause fitment issues in tight laptop M.2 slots.
  • No proprietary drive management software is available, unlike Samsung Magician or WD Dashboard.
  • Brand resale value and ecosystem support are limited compared to more established competitors.
  • TLC flash endurance, while adequate for most uses, trails the SLC or MLC found in some enterprise-grade alternatives.
  • Buyers in markets with limited local retailer presence may face slower warranty claim turnaround times.

Ratings

The fanxiang S770 4TB NVMe M.2 SSD scores below are generated by AI after analyzing thousands of verified global buyer reviews, with spam, bot activity, and incentivized feedback actively filtered out. The result reflects what real PS5 owners, PC builders, and storage-focused professionals actually experienced — strengths and frustrations alike. Where this drive earns strong marks and where it falls short of established rivals is represented transparently across every category.

Read Speed Performance
88%
On PC, buyers running benchmark tools consistently reported sequential read results close to the advertised 7,300MB/s figure, which is genuinely competitive in the PCIe 4.0 tier. For large game installs and file transfers, the real-world speed difference versus slower drives is noticeable and appreciated.
PS5 users need to adjust expectations — Sony's firmware caps the effective read speed closer to 6,300MB/s on console, which is still fast but meaningfully below the headline number. A handful of buyers felt the marketing could be clearer about this distinction upfront.
Write Speed Consistency
82%
18%
The DRAM cache plays a real role here — buyers transferring large video files or installing multiple game titles back-to-back noticed that write speeds held steady rather than dropping sharply mid-transfer, which is a common complaint with cache-less drives at this capacity.
Under extremely sustained write workloads over extended periods, some PC users observed minor speed dips once the SLC cache buffer filled, which is expected behavior for TLC flash but worth noting for anyone doing continuous large-scale data migrations.
PS5 Compatibility
93%
The vast majority of PS5 owners reported a smooth installation experience — slot in the drive, run the console's format prompt, and it works. The included heatsink removes the friction of sourcing a separate thermal solution, which many first-time upgraders specifically called out as a genuine convenience.
A very small number of users reported initial recognition issues that were resolved by reseating the drive, which is more of a general M.2 installation quirk than a product-specific flaw. The heatsink's added height is occasionally tight in certain PS5 hardware revisions.
Thermal Management
86%
The bundled heatsink earns consistent praise for keeping temperatures in check during marathon gaming sessions and long file transfers. Buyers who had previously used bare drives in their PS5 noticed measurably cooler operation and no thermal throttling warnings.
The heatsink does add physical bulk compared to a bare M.2 drive, which a few laptop users found was marginally tighter than expected in their chassis. It is not a dealbreaker, but compact build owners should verify M.2 bay clearance beforehand.
Value for Money
84%
Compared to Samsung 990 Pro or WD Black SN850X at similar capacities, this fanxiang SSD delivers comparable sequential performance at a noticeably lower price point. For buyers who prioritize storage per dollar over brand prestige, the math works out strongly in its favor.
It is still a significant investment in absolute terms, and buyers who later encounter any reliability concerns will feel that price more acutely given fanxiang's shorter brand history. Those who factor in long-term peace of mind may still prefer paying the premium for a household name.
Brand Trust & Reliability
67%
33%
The 5-year warranty and multiple positive mentions of responsive customer support give the S770 4TB drive more credibility than a nameless white-label product. A growing number of buyers who purchased early units report no issues after extended use, which is encouraging for a newer brand.
fanxiang simply does not have the decades of reliability data that Samsung or Western Digital have accumulated, and a portion of buyers openly acknowledged this uncertainty in their reviews. For mission-critical storage without a robust backup strategy, this brand gap is a real consideration rather than an irrational bias.
Installation Experience
91%
Buyers across PS5 and PC setups reported that physical installation was straightforward, and the drive was recognized immediately in both environments without driver fiddling or BIOS adjustments in the majority of cases. The heatsink comes ready to use without additional adhesive pads or tools in most configurations.
A small subset of users unfamiliar with M.2 installations found the process mildly intimidating, though this reflects general DIY storage installation learning curves rather than anything unique to this drive. Clear instructional materials could reduce this barrier.
Storage Capacity
96%
Four terabytes is a genuinely freeing amount of space — PS5 owners with large game libraries and PC users storing 4K footage, RAW photo archives, or dozens of AAA titles found they could install everything without prioritizing what stays on the drive. Almost no buyer complained about running out of space.
The 4TB tier is the highest capacity option in this product line, so there is no upgrade path if your storage needs grow beyond it without replacing the drive entirely. This is a product category limitation rather than a flaw, but it is worth noting for forward-planning buyers.
Random Read/Write Speed
79%
21%
With DRAM cache in place, random 4K read and write performance is solid for a consumer TLC drive — noticeable in OS responsiveness on PC and in how quickly PS5 loads individual game assets and save states during play sessions.
Sustained random write performance under database-style workloads or heavy multitasking on a workstation can lag behind premium enterprise-oriented consumer drives. For typical gaming and media use this is a non-issue, but IT professionals running write-intensive applications may want to verify real-world benchmarks for their specific scenario.
Build & Physical Quality
77%
23%
The drive feels solid and the heatsink construction is more substantial than the flimsy clip-on accessories sold separately by third parties. Buyers noted that the overall package looks and feels like it belongs in a premium build rather than a budget afterthought.
The heatsink finish and clip mechanism are functional but not as refined as what ships on drives from Samsung or Seagate in the same tier. This is largely aesthetic, but buyers who care about the visual details of an open-window PC build may notice the difference.
PC Gaming Performance
87%
Loading screens in open-world and asset-heavy titles are fast and consistent, with buyers noting the experience is indistinguishable from pricier alternatives in day-to-day play. Using the S770 as a secondary game library drive in a PCIe 4.0 system is where it performs most confidently.
As a primary OS drive on a high-end workstation, it competes in a category where small speed differentials between drives can matter more to professionals. In that niche, the lack of brand-specific tuning software puts it at a minor disadvantage compared to monitored alternatives.
Customer Support
81%
19%
Multiple independent reviewers singled out fanxiang's support team as genuinely helpful and reasonably responsive, which is not a given for smaller storage brands selling through marketplace platforms. Warranty claim processes were handled satisfactorily in the cases buyers described.
Support availability and turnaround time may vary depending on region, and buyers outside of major Western markets have reported longer response windows. The absence of a large global support infrastructure means experiences are less consistent than what you get from established brands with dedicated regional teams.
Advertised vs. Actual Specs
83%
PC users running CrystalDiskMark and similar benchmarks reported results that closely tracked the advertised figures, which is a stronger outcome than many competing drives that inflate headline numbers. This transparency was specifically noted and appreciated in multiple detailed buyer reviews.
The gap between the PC and PS5 speed figures — while technically Sony's limitation rather than the drive's — is not always made obvious in the primary marketing materials, and some console buyers felt misled after discovering the difference. Clearer labeling would prevent this recurring friction.

Suitable for:

The fanxiang S770 4TB NVMe M.2 SSD is a strong fit for PS5 owners who have burned through their console's built-in storage and want one high-capacity solution they can install and forget. It slots in without requiring a separately purchased heatsink, which removes a common friction point for first-time console storage upgraders. PC builders looking for a fast, spacious secondary drive for game libraries or creative project files will also find it punches well above its price positioning relative to the Samsung and WD Black alternatives. IT professionals and power users who need reliable bulk NVMe storage across workstations or test environments benefit from both the DRAM cache and the five-year warranty backing. If your priority is maximizing usable storage without frequent drive management, this is a practical, well-rounded choice.

Not suitable for:

The fanxiang S770 4TB NVMe M.2 SSD is not the right call for buyers who prioritize brand heritage and decades of proven reliability data above all else — fanxiang simply does not have that history yet, and that is a fair concern for mission-critical data storage. Users planning to use this as a primary drive for irreplaceable professional archives or business-critical workloads should factor in the brand's relatively short Western market track record and plan their backup strategy accordingly. Those expecting maximum possible PS5 read speeds should also understand that Sony's firmware caps performance below what this drive delivers on PC, so it will not hit its headline figures on console. Buyers in extremely compact laptop builds should verify M.2 slot clearance, as the included heatsink adds some physical bulk. If you are already committed to a specific ecosystem like Samsung's Magician software suite for drive management, switching to a lesser-known brand means leaving those tools behind.

Specifications

  • Brand: Manufactured by fanxiang, a Chinese storage brand expanding into Western PC and console markets.
  • Series: Part of the fanxiang S770 product line, designed for high-performance PCIe 4.0 applications.
  • Capacity: Offers 4TB of usable flash storage for games, applications, and large media libraries.
  • Interface: Uses a PCIe Gen 4x4 (NVMe) interface for maximum bandwidth on compatible motherboards and consoles.
  • Form Factor: M.2 2280 format, measuring 80mm in length, fitting standard M.2 slots in desktops, laptops, and PS5.
  • Sequential Read: Reaches up to 7,300MB/s sequential read speed on PC; PS5 firmware limits this to approximately 6,300MB/s.
  • Cache Type: Includes a dedicated DRAM cache module to sustain consistent random read and write performance under load.
  • Flash Type: Built with 3D NAND TLC flash, balancing storage density, write endurance, and cost at the 4TB tier.
  • Heatsink: Ships with a pre-attached heatsink designed to reduce thermal throttling during extended or intensive use.
  • PS5 Compatible: Officially compatible with PS5 memory expansion slot, meeting Sony's minimum speed requirements for console use.
  • PC Compatible: Works as an internal drive in PCIe 4.0 and PCIe 3.0 (at reduced speed) desktops and laptops.
  • Installation Type: Internal drive requiring physical installation into an M.2 slot; no external enclosure or adapter needed.
  • Warranty: Backed by a 5-year manufacturer warranty with access to a dedicated after-sales support team.
  • Weight: The drive assembly weighs approximately 2.46 ounces, including the bundled heatsink.
  • Backward Compatible: Operates in PCIe 3.0 slots at reduced throughput, maintaining broad compatibility with older platforms.
  • Available Since: First listed for sale in May 2023, making it a relatively recent entry in the high-capacity NVMe segment.

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FAQ

Yes, the S770 4TB drive is fully compatible with the PS5 expansion slot. It ships with a heatsink already included, which Sony recommends for console installations, so you do not need to buy anything separately. Installation follows the standard PS5 M.2 slot procedure — remove the side panel, unscrew the slot cover, and follow Sony's on-screen formatting prompts once the drive is seated.

That is correct and worth knowing upfront. The PS5's firmware limits NVMe read speeds to around 5,500MB/s to 7,000MB/s depending on the drive and system state, so the headline PC figure does not fully apply on console. In practice, the fanxiang S770 4TB NVMe M.2 SSD delivers around 6,300MB/s on PS5, which is well above Sony's minimum requirement and fast enough that you will not notice any difference compared to the internal storage during normal gameplay.

That is a fair question. fanxiang is a Chinese manufacturer that has been gaining traction in Western markets over the past few years and has accumulated close to 2,800 ratings on Amazon with a 4.5-star average, which is a meaningful signal. They are not Samsung or Western Digital, and they do not have the same decades-long track record. That said, the five-year warranty and responsive customer support noted by many buyers suggest the company stands behind the product. For most everyday use cases, the risk level is reasonable, but if you are storing irreplaceable data with no backup plan, any brand gives pause.

For the vast majority of PS5 models, yes. The heatsink that ships with this NVMe upgrade is sized to fit within the console's M.2 bay. That said, heatsink thickness can occasionally be tight depending on your specific PS5 revision, so it is worth checking the maximum component height specification for your model before installing.

Technically yes, it will work as a boot drive. That said, 4TB is considerably more capacity than most users need for a Windows installation, and using it purely as a boot drive would leave a lot of paid-for storage underutilized. Most PC builders use drives at this capacity as a secondary game or media storage drive, with a smaller, faster SSD handling the OS. Either way, it will function correctly.

Yes, the M.2 2280 form factor is backward compatible with PCIe 3.0 slots. You will see reduced speeds compared to a PCIe 4.0 platform, roughly half the sequential throughput, but the drive will still operate reliably. If your board only supports PCIe 3.0, this is still a valid option for high-capacity storage, just not at its peak performance.

On raw sequential read speed, the S770 4TB drive is competitive with those drives. Where Samsung and WD Black have an edge is brand reliability history, software ecosystems like Samsung Magician, and in some cases slightly better sustained write consistency under prolonged workloads. The trade-off is that both of those brands charge a premium for that reputation. If you prioritize capacity per dollar and are comfortable with a newer brand, this drive holds its own technically.

fanxiang offers a 5-year warranty, and several buyers have specifically called out their support team as responsive and helpful. Your best path is to contact fanxiang directly through the channel listed at purchase. As with any warranty claim, keep your proof of purchase and note the purchase date, since the 5-year clock starts there.

For gaming, media storage, and general PC use, yes. 3D NAND TLC is the standard flash type used in most consumer SSDs today, including many drives from top-tier brands. It has a lower write endurance ceiling than MLC or SLC flash, but at 4TB capacity and typical consumer workloads, most users will not approach the drive's rated endurance within its useful lifespan. Heavy professional workloads involving constant large file writes are the main exception worth thinking about.

The heatsink ships with the drive and in most configurations is ready to attach or comes pre-applied. You should verify the specific packaging on arrival, but the intent is to remove the extra step of sourcing your own thermal solution — particularly useful for PS5 installs where Sony recommends a heatsink but does not include one with the console.