Choosing among PCIe Gen4 NVMe RAID cards takes more than comparing drive counts: some products manage RAID themselves, while others rely on motherboard features or host software. My leading picks are the HighPoint Rocket 7528D for enterprise U.2/U.3 arrays, the Sonnet M.2 8×4 Silent for dense Gen4 M.2 expansion, and the ASUS Hyper M.2 x16 Gen 4 for four-drive desktop builds. Their tradeoffs are clear: enterprise cabling and management versus compact M.2 installation, and dedicated RAID capabilities versus motherboard-dependent RAID support.
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One important distinction shapes this guide: the SSD7105 and ASUS Hyper M.2 x16 Card V2 are Gen3 products, not Gen4 cards. I include them because their boot support, four-drive layout, or established platform fit may suit buyers comparing the broader category—but I rank them below the Gen4 choices for a Gen4-focused build. Check the exact motherboard, slot wiring, RAID method, and drive form factor before buying.
Key Takeaways
- The Rocket 7528D is the standout for up to eight U.2/U.3 drives, hot-swap workflows, and controller-managed RAID, but it requires compatible SlimSAS cabling and a suitable backplane or drive setup.
- The Sonnet M.2 8×4 Silent combines Gen4 x16 connectivity, eight M.2 slots, passive cooling, and no PCIe bifurcation requirement; its RAID modes still depend on Windows or Linux software.
- The ASUS Hyper M.2 x16 Gen 4 is the simpler four-M.2 Gen4 choice when the platform supports it, but its RAID behavior is tied to motherboard support or Intel VROC.
- The ASUS V2 is a Gen3 card for VROC or Threadripper-oriented systems, not a Gen4 accelerator; it is best treated as a compatibility-led alternative.
- The HighPoint SSD7105 is the boot-focused option here, with RAID 0, 1, and 10 and broad stated OS support, but its PCIe Gen3 interface misses the central Gen4 requirement.
| Rocket 7528D PCIe Gen4 x16 to 4X SlimSAS x8 NVMe RAID Adapter |  | Best Overall for Enterprise U.2/U.3 RAID | Host interface: PCIe 4.0 x16 | Drive connections: Four SlimSAS SFF-8654 ports | Drive support: Up to eight 2.5-inch U.2 or U.3 NVMe SSDs | VIEW ON AMAZON | See Our Full Breakdown |
| Sonnet M.2 8×4 Silent Gen4 PCIe 4.0 NVMe SSD Card 8-Slot Mac Windows Linux |  | Best for Eight-Drive M.2 Expansion | Host interface: PCIe 4.0 x16 | M.2 slots: Eight | Drive generation: PCIe Gen4 or Gen3 NVMe SSDs | VIEW ON AMAZON | See Our Full Breakdown |
| ASUS Hyper M.2 x16 Gen 4 PCIe Expansion Card |  | Best Four-Drive Gen4 M.2 Card | Host interface: PCIe 4.0 x16 | M.2 slots: Four | Supported M.2 lengths: 2242, 2260, 2280, and 22110 | VIEW ON AMAZON | See Our Full Breakdown |
| ASUS Hyper M.2 x16 Card V2, PCIe 3.0 Expansion Card for Four NVMe Drives |  | Best Gen3 Alternative for VROC and Threadripper | Host interface: PCIe 3.0 x16; compatible with PCIe x8 and x16 slots | M.2 slots: Four | Supported M.2 lengths: 2242, 2260, 2280, and 22110 | VIEW ON AMAZON | See Our Full Breakdown |
| HighPoint 4-Port M.2 SSD7105 PCIe Gen3 Bootable NVMe RAID Controller for Windows & Linux Systems |  | Best for Bootable NVMe RAID on Gen3 | Host interface: PCIe 3.0 x16 | M.2 slots: Four | Supported M.2 lengths: 2242, 2260, 2280, and 22110 | VIEW ON AMAZON | See Our Full Breakdown |
| pcie gen4 nvme raid card | Host interface | M.2 slots | Cooling | Supported M.2 lengths |
|---|---|---|---|---|
| Rocket 7528D PCIe Gen4 x16 to | PCIe 4.0 x16 | — | — | — |
| Sonnet M.2 8×4 Silent Gen4 PCI | PCIe 4.0 x16 | Eight | Passive, fanless cooling | — |
| ASUS Hyper M.2 x16 Gen 4 PCIe | PCIe 4.0 x16 | Four | Heatsink and blower-style fan | 2242, 2260, 2280, and 22110 |
| ASUS Hyper M.2 x16 Card V2 | PCIe 3.0 x16; compatible with PCIe x8 and x16 slots | Four | Heatsink and integrated blower-style fan | 2242, 2260, 2280, and 22110 |
| HighPoint 4-Port M.2 SSD7105 P | PCIe 3.0 x16 | Four | Low-noise cooling with fan control | 2242, 2260, 2280, and 22110 |
More Details on Our Top Picks
Rocket 7528D PCIe Gen4 x16 to 4X SlimSAS x8 NVMe RAID Adapter
For a serious Gen4 storage build using enterprise drives, the Rocket 7528D is the most purpose-built card in this group. Its PCIe 4.0 x16 host interface connects to four SlimSAS ports and can support up to eight 2.5-inch U.2 or U.3 NVMe SSDs. Unlike the ASUS M.2 cards, it is designed around cable-to-backplane storage rather than bare M.2 modules, which suits servers and workstations built for drive bays.
The product description specifies RAID 0, 1, and 10, up to four separate arrays, bootable volumes, and hot-plug or hot-swap operation. Those management features give it a stronger RAID-oriented role than the Sonnet card, whose stated RAID modes are supplied through Windows or Linux. The Rocket also advertises drive health monitoring and management, a practical advantage when an array contains several drives that need ongoing oversight.
The tradeoff is installation complexity. This is not a plug-in M.2 card: buyers need compatible SlimSAS cabling and a suitable way to mount and power U.2/U.3 drives. The supplied information also does not specify a headline throughput figure, so I would not choose it on an unverified speed comparison with Sonnet’s stated four-drive RAID 0 figure. Choose it for drive-bay flexibility and RAID administration, not the simplest desktop upgrade.
Pros:- PCIe Gen4 x16 host connection with four SlimSAS ports
- Supports up to eight 2.5-inch U.2 or U.3 NVMe SSDs
- Offers RAID 0, 1, and 10, bootable volumes, and multiple arrays
- Hot-plug and hot-swap support plus storage health management
Cons:- Requires SlimSAS cables and a compatible U.2/U.3 drive or backplane setup
- Less suitable for compact M.2-only systems than the Sonnet or ASUS cards
- The provided information does not state a comparable peak transfer rate
Best for: Server and workstation builders who need Gen4 connections for multiple U.2/U.3 drives, hot-swap capability, and controller-based RAID features.
Not ideal for: M.2-only desktop owners, buyers without SlimSAS cabling or a compatible drive arrangement, and anyone seeking a simple single-card M.2 expansion.
- Host interface:PCIe 4.0 x16
- Drive connections:Four SlimSAS SFF-8654 ports
- Drive support:Up to eight 2.5-inch U.2 or U.3 NVMe SSDs
- RAID modes:RAID 0, 1, and 10
- Array features:Up to four arrays; bootable volumes and mixed configurations
- Serviceability:Hot-plug and hot-swap capable
- Management:Storage health monitoring and management suite
Our verdict“I recommend the Rocket 7528D for Gen4 enterprise arrays where drive serviceability and RAID management matter more than a straightforward M.2 installation.”
Sonnet M.2 8×4 Silent Gen4 PCIe 4.0 NVMe SSD Card 8-Slot Mac Windows Linux
The Sonnet M.2 8×4 Silent is the strongest fit when the goal is to pack many M.2 SSDs into one PCIe slot. It holds up to eight Gen4 or Gen3 drives and connects through a PCIe 4.0 x16 host interface with an onboard PCIe switch. A key convenience is that it does not require motherboard PCIe bifurcation, removing a compatibility hurdle that can complicate multi-drive cards.
Its passive, fanless cooling design separates it from the ASUS Gen4 card, which uses a blower. That may appeal in quiet workstations or recording environments, while the stated support for RAID 0, 1, and 10 on Windows and Linux offers useful software-array options. Sonnet cites up to 30,000 MB/s for a four-drive RAID 0 configuration; I treat that as a product claim, not a guarantee, since actual throughput depends on drives, workload, and host slot bandwidth.
There is a meaningful distinction from the Rocket 7528D: Sonnet provides dense internal M.2 storage, while Rocket targets hot-swappable U.2/U.3 systems and more explicit controller-led array management. Sonnet’s RAID support is described for operating systems, so buyers who specifically need hardware RAID or hot-swap drive bays should look at Rocket instead. Eight drives also make capacity and airflow planning more important than with a four-slot card.
Pros:- Eight M.2 slots for Gen4 or Gen3 NVMe SSDs
- PCIe 4.0 x16 host interface with onboard PCIe switch
- Does not require motherboard PCIe bifurcation
- Fanless cooling and stated Windows/Linux RAID 0, 1, and 10 support
Cons:- RAID support is described through Windows and Linux rather than as controller-managed hardware RAID
- Requires an x16 slot and careful planning for eight drives
- The 30,000 MB/s figure is a stated four-drive RAID 0 claim, not a guaranteed result
Best for: Workstation users who want up to eight M.2 drives, a Gen4 x16 connection, quiet fanless cooling, and no dependence on PCIe bifurcation.
Not ideal for: Buyers who need hot-swappable U.2/U.3 bays, a stated hardware RAID controller, or an especially simple four-drive setup.
- Host interface:PCIe 4.0 x16
- M.2 slots:Eight
- Drive generation:PCIe Gen4 or Gen3 NVMe SSDs
- Maximum stated capacity:Up to 64TB with eight 8TB drives
- RAID support:Windows and Linux RAID 0, 1, and 10
- Cooling:Passive, fanless cooling
- Bifurcation:Not required
- Advertised RAID 0 speed:Up to 30,000 MB/s with four SSDs
Our verdict“I would choose the Sonnet when eight quiet, internally mounted M.2 drives matter more than hot-swap bays or dedicated hardware RAID.”
ASUS Hyper M.2 x16 Gen 4 PCIe Expansion Card
The ASUS Hyper M.2 x16 Gen 4 gives a desktop or workstation a direct route to four internal M.2 NVMe drives over PCIe 4.0. It supports common 2242, 2260, 2280, and 22110 module lengths, making it more flexible than a drive-specific adapter. Its stated maximum bandwidth is 256 Gbps per card, but that figure depends on the host connection and should not be read as a guaranteed sustained result for every array.
Compared with the eight-slot Sonnet, ASUS keeps the setup to four drives and active cooling. The heatsink and blower-style fan are intended to help prevent thermal throttling, and the card supports SSDs drawing up to 14 W. This layout is a sensible middle ground for someone who wants several M.2 drives without moving to the Rocket’s cabling and drive-bay ecosystem.
Its main limitation is platform dependence. ASUS lists compatibility with AMD TRX40/X570 PCIe 4.0 systems and Intel VROC NVMe RAID; the card itself should not be assumed to supply universal hardware RAID. Confirm the motherboard’s PCIe 4.0 support, slot lane allocation, firmware, and intended RAID method before purchase. If silent cooling or eight drives are more important, Sonnet is the more distinct alternative; for controller-managed hot-swap arrays, Rocket is better suited.
Pros:- Four M.2 slots for common module lengths from 2242 to 22110
- PCIe 4.0 x16 interface with stated bandwidth up to 256 Gbps
- Heatsink and blower-style fan help manage drive temperatures
- Supports SSDs drawing up to 14 W
Cons:- Compatibility depends on motherboard PCIe 4.0 support or Intel VROC
- Requires a suitable PCIe x8 or x16 slot
- Active blower cooling may be less appealing than Sonnet’s fanless design
Best for: Owners of compatible PCIe 4.0 desktop or workstation platforms who want four M.2 NVMe drives and onboard active cooling.
Not ideal for: Buyers with an unverified motherboard, a need for universal hardware RAID, or a preference for fanless cooling and eight M.2 slots.
- Host interface:PCIe 4.0 x16
- M.2 slots:Four
- Supported M.2 lengths:2242, 2260, 2280, and 22110
- Maximum stated bandwidth:256 Gbps
- SSD power support:Up to 14 W
- Cooling:Heatsink and blower-style fan
- Listed platform compatibility:AMD TRX40/X570 PCIe 4.0 and Intel VROC NVMe RAID
- Warranty:1 year
Our verdict“I recommend this ASUS card for four-drive Gen4 M.2 builds when motherboard and RAID compatibility are confirmed in advance.”
ASUS Hyper M.2 x16 Card V2, PCIe 3.0 Expansion Card for Four NVMe Drives
The ASUS Hyper M.2 x16 Card V2 is not a Gen4 product, which is why it sits below the three Gen4 picks. Its role is narrower: it adds four M.2 NVMe drives to compatible Intel VROC or AMD Ryzen Threadripper systems, with a stated card bandwidth of up to 128 Gbps. For a build that already supports its intended platform and does not need Gen4 drive throughput, its four-slot arrangement may make more sense than choosing a newer card that the motherboard cannot use properly.
It accepts the same broad set of M.2 lengths as the Gen4 ASUS model and includes a heatsink with an integrated blower fan. Compared with the Gen4 ASUS card, this V2 gives up the higher PCIe generation and stated bandwidth, but it retains the same basic four-drive expansion idea. Buyers focused on current Gen4 performance should choose the newer ASUS model if their motherboard supports it.
Do not treat the V2 as a general-purpose RAID controller. Its description ties use to Intel VROC or Threadripper systems, so platform verification is central to the decision. The fan also adds a cooling component that can be less attractive in a quiet PC. I would skip it for a new Gen4-focused build unless compatibility, rather than generation, is the deciding factor.
Pros:- Adds four NVMe M.2 drives to a compatible system
- Supports M.2 lengths from 2242 through 22110
- Heatsink and integrated blower-style fan provide active cooling
- Stated bandwidth reaches up to 128 Gbps per card
Cons:- PCIe 3.0, so it does not meet a strict Gen4 requirement
- Designed around compatible Intel VROC or AMD Ryzen Threadripper systems
- Active fan and platform dependence reduce its appeal as a general upgrade
Best for: Builders with a compatible Intel VROC or AMD Ryzen Threadripper platform who need four M.2 drives but do not require a Gen4 card.
Not ideal for: Buyers assembling a Gen4-focused system, anyone without confirmed VROC or Threadripper compatibility, and users seeking universal controller-based RAID.
- Host interface:PCIe 3.0 x16; compatible with PCIe x8 and x16 slots
- M.2 slots:Four
- Supported M.2 lengths:2242, 2260, 2280, and 22110
- Maximum stated bandwidth:128 Gbps
- Platform compatibility:Intel VROC and AMD Ryzen Threadripper NVMe RAID
- Cooling:Heatsink and integrated blower-style fan
- Power output:Up to 14 W
- Warranty:1 year
Our verdict“I would pick the ASUS V2 only for a compatible Gen3-era VROC or Threadripper system, not as my first choice for a new Gen4 build.”
HighPoint 4-Port M.2 SSD7105 PCIe Gen3 Bootable NVMe RAID Controller for Windows & Linux Systems
The HighPoint SSD7105 stands apart because its pitch is bootable NVMe RAID rather than Gen4 bandwidth. It accepts up to four standard M.2 NVMe drives and lists RAID 0, 1, and 10, with support for Windows and Linux boot volumes. That makes it more directly suited to a boot array than the ASUS expansion cards, whose stated RAID compatibility depends on VROC or a supported platform.
HighPoint also lists monitoring for SSD temperature and total bytes written, along with fan control and a low-noise cooling solution. These details help when the card will serve as a system volume, where drive health and boot support are part of the storage plan. Its stated capacity is up to 32TB per controller, and the product description lists support for several M.2 module lengths and a broad set of operating systems.
The limitation is decisive for this roundup: the SSD7105 is PCIe Gen3, even though it can be installed in a compatible PCIe 3.0 or 4.0 x16 slot. Its advertised transfer performance is not a substitute for a Gen4 host interface. Compared with Sonnet and the Gen4 ASUS card, it gives boot and RAID features more emphasis but offers less generation headroom; I would select it only when those boot features outweigh the Gen4 requirement.
Pros:- Supports up to four standard M.2 NVMe SSDs
- Lists bootable RAID 0, 1, and 10 for Windows and Linux
- Provides SSD temperature and TBW monitoring with fan control
- Supports M.2 lengths from 2242 through 22110
Cons:- PCIe Gen3 rather than Gen4
- Requires supported drivers and boot configuration for the chosen platform
- Not designed for U.2/U.3 hot-swap drive bays like the Rocket 7528D
Best for: Users who need a bootable four-drive NVMe RAID setup on a supported Windows or Linux system and accept PCIe Gen3.
Not ideal for: Anyone requiring a true PCIe Gen4 card, a hot-swappable U.2/U.3 setup, or a simple card with no RAID-driver and boot-configuration work.
- Host interface:PCIe 3.0 x16
- M.2 slots:Four
- Supported M.2 lengths:2242, 2260, 2280, and 22110
- RAID modes:RAID 0, 1, and 10
- Maximum capacity:Up to 32TB per controller
- Listed operating systems:Windows and Linux; product details also list macOS support
- Monitoring:SSD TBW and temperature monitoring
- Cooling:Low-noise cooling with fan control
Our verdict“I recommend the SSD7105 for bootable NVMe RAID on a supported system, but not for buyers whose main requirement is Gen4 bandwidth.”
How We Picked
I ranked these cards by how well they answer the specific needs behind a PCIe Gen4 NVMe RAID purchase: generation and host bandwidth, supported drive type and count, RAID responsibility, cooling, and practical platform fit. I gave the highest weight to products that are explicitly Gen4 and provide a clear path to combining multiple NVMe drives. That places the Rocket 7528D, Sonnet M.2 8×4 Silent, and Gen4 ASUS card ahead of the Gen3 models.
I also separated an adapter from a RAID controller. A card that physically connects several SSDs does not automatically create hardware RAID; motherboard firmware, Intel VROC, or operating-system software may handle the array instead. The product descriptions do not provide identical RAID details, so I avoid treating headline bandwidth as guaranteed real-world throughput. Slot lane availability, drive workload, cooling, and software configuration affect results.
Finally, I considered the work involved in installing each option. M.2 cards favor compact internal storage, while the Rocket’s SlimSAS connections suit systems built around U.2/U.3 drives and backplanes. I did not rank by advertised speed alone: capacity, serviceability, boot needs, and compatibility can matter more than peak transfer claims. Where product information is limited, I call that out rather than filling gaps with assumptions.
| pcie gen4 nvme raid card | Host interface | M.2 slots | Cooling |
|---|---|---|---|
| Rocket 7528D PCIe Gen4 x16 to | PCIe 4.0 x16 | — | — |
| Sonnet M.2 8×4 Silent Gen4 PCI | PCIe 4.0 x16 | Eight | Passive, fanless cooling |
| ASUS Hyper M.2 x16 Gen 4 PCIe | PCIe 4.0 x16 | Four | Heatsink and blower-style fan |
| ASUS Hyper M.2 x16 Card V2 | PCIe 3.0 x16; compatible with PCIe x8 and x16 slots | Four | Heatsink and integrated blower-style fan |
| HighPoint 4-Port M.2 SSD7105 P | PCIe 3.0 x16 | Four | Low-noise cooling with fan control |
Factors to Consider When Choosing Pcie Gen4 Nvme Raid Cards
I would start by deciding whether the build needs a genuine Gen4 link, a particular RAID implementation, or simply more NVMe sockets. Those goals are related, but the cards here do not solve them in the same way. The following checks help narrow the choice before comparing advertised bandwidth.
Confirm the card is actually Gen4
A PCIe 4.0 slot does not turn a Gen3 card into a Gen4 device. The SSD7105 and ASUS V2 are Gen3, while the Rocket 7528D, Sonnet M.2 8×4 Silent, and ASUS Hyper M.2 x16 Gen 4 identify themselves as Gen4 products. If Gen4 performance is a firm requirement, start with those three. Also check the motherboard manual: slot generation and available lanes can vary by CPU, slot, and installed devices.
Know where RAID is created
RAID can be provided by a dedicated controller, motherboard firmware or technology such as Intel VROC, or the operating system. The Rocket 7528D explicitly describes RAID arrays, boot volumes, and hot-swap management. Sonnet specifies Windows and Linux RAID support; the ASUS cards rely on compatible platform features. Before buying, confirm which layer will create and manage the array, and whether it supports the boot or recovery workflow you need.
Match the card to the drive format
The ASUS and Sonnet models use M.2 NVMe modules, making them suitable for internal storage without drive-bay cabling. Sonnet fits eight drives; each ASUS card fits four. Rocket connects to U.2/U.3 2.5-inch SSDs through SlimSAS and is the clear fit for a compatible backplane or cable-based drive layout. Do not assume an M.2 card can connect U.2/U.3 drives, or that a SlimSAS card accepts M.2 sticks.
Check lane sharing and bifurcation
Multiple SSDs need enough PCIe lanes and a way for the system to identify each device. The Sonnet says it does not require bifurcation, a useful advantage for boards that lack that feature. For other multi-drive cards, verify the motherboard’s bifurcation support and the card’s platform requirements instead of relying on slot shape alone. A physical x16 connector may not be wired for sixteen usable lanes.
Plan cooling and sustained workloads
Fast NVMe drives can generate heat during long transfers, and a RAID workload may keep several drives busy at once. ASUS includes a heatsink and blower; Sonnet uses a passive fanless design; HighPoint describes low-noise cooling with fan control. These approaches suit different cases and noise preferences. Check the slot’s airflow and card clearance, especially in compact builds, and do not treat a cooling feature as a substitute for good case ventilation.
Interpret bandwidth claims carefully
Published bandwidth is a ceiling or product claim, not a promise that every array will reach it. Results depend on SSD models, read/write mix, queue depth, filesystem or RAID software, host lanes, and thermals. Sonnet states up to 30,000 MB/s in a four-drive RAID 0 setup; ASUS lists per-card bandwidth figures. Compare these only after confirming similar test conditions. For many buyers, compatibility and reliability matter more than a headline number.
Choose RAID for the right reason
RAID 0 stripes data for performance and capacity but provides no drive-failure protection. RAID 1 mirrors data, while RAID 10 combines mirroring and striping and needs enough drives. RAID is not a backup. If a project cannot be recreated, keep a separate backup even with a mirrored or redundant array. Bootable RAID adds another layer of firmware, driver, and recovery planning, so buyers should favor products with clear support for their exact operating system.
Frequently Asked Questions
Which card here is the best choice for a true PCIe Gen4 NVMe RAID build?
For enterprise U.2/U.3 storage and hot-swap workflows, I would start with the Rocket 7528D. For M.2 drives, the Sonnet M.2 8×4 Silent offers eight slots and does not require bifurcation, while the ASUS Hyper M.2 x16 Gen 4 is a four-drive alternative. The best fit depends on drive format, RAID management needs, motherboard support, and whether passive or fan-based cooling suits the system.
Are the HighPoint SSD7105 and ASUS Hyper M.2 V2 Gen4 cards?
No. Both are PCIe Gen3 products. They may operate in a compatible newer-generation slot, but that does not change the card’s generation. I include them as alternatives for buyers who value bootable RAID or specific VROC and Threadripper compatibility more than Gen4 throughput. If Gen4 is mandatory, consider the Rocket 7528D, Sonnet, or newer ASUS Hyper M.2 card instead.
Do these expansion cards all provide hardware RAID?
No. The product descriptions do not give all five cards the same RAID role. Rocket describes configurable RAID arrays and hot-swap management, while Sonnet lists Windows and Linux RAID support. ASUS ties its cards to platform features such as Intel VROC or compatible AMD systems, and HighPoint describes bootable RAID support. I would verify the specific controller, operating system, and motherboard documentation before treating any card as a standalone hardware RAID controller.
Will a card with an x16 connector work in any x16 motherboard slot?
Not necessarily. Connector size does not confirm lane count, PCIe generation, bifurcation support, firmware support, or available bandwidth. Some cards need a slot with particular wiring or motherboard features, and other installed devices can affect lane allocation. Check the motherboard manual for the exact slot and CPU configuration, then compare those requirements with the card. Sonnet’s stated lack of a bifurcation requirement removes one hurdle, but it still needs a suitable host slot.
Does RAID protect my data from loss?
RAID can help maintain availability after certain drive failures, depending on the chosen level, but it is not a backup. RAID 0 has no redundancy; RAID 1 and RAID 10 can tolerate some failures under the right conditions but do not protect against accidental deletion, malware, theft, or other system failures. I recommend keeping a separate backup of important files and testing recovery procedures, particularly when the array is bootable or holds work that cannot be recreated.
Conclusion
For a server or workstation with U.2/U.3 drives, backplane connectivity, and hot-swap needs, I would choose the Rocket 7528D. For a quiet M.2 workstation that needs up to eight drives and can use Windows or Linux RAID, the Sonnet is the better match. Buyers who want four M.2 Gen4 drives should look at the ASUS Hyper M.2 x16 Gen 4, after checking motherboard compatibility and RAID support.
The two Gen3 products fit more specific situations: I would consider the ASUS V2 for an already-compatible VROC or Threadripper setup, and the HighPoint SSD7105 for bootable RAID when its stated platform support matters more than Gen4 bandwidth. If your requirement is specifically a PCIe Gen4 NVMe RAID card, keep those two off the shortlist and verify the host slot, drive format, cooling, and RAID implementation before choosing among the three Gen4 options.
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