TRENDING NOW: Real-life doomsday comet hits New York City in prank video for Netflix

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap

Up to 26,000 MB/s throughput for $1699? We didn't think it possible, yet it is via some OWC know-how with the Accelsior 8M2.

@JonCoulterSSD
Published Mon, Jan 3 2022 2:45 PM CST
Rating: 98%Manufacturer: OWC (OWCSSDACL8M204T)

Introduction & Drive Details

Having already tested a couple of similar ultra-high capacity PEX switched RAID card devices, we jumped on the opportunity when OWC offered to send over its similarly configured/spec'd Accelsior 8M2. Based on previous experience, we were expecting a card with eight M.2 NVMe SSDs totaling 32TB or 64TB capable of up to 26,000 MB/s throughput. After all, OWC calls it the world's fastest and highest-capacity PCIe SSD.

So, we were admittedly a bit surprised to find a package containing a 4TB Accelsior 8M2. 4TB? Little did we know OWC makes its Accelsior 8M2 Gen4 RAID card SSD in capacities ranging from 2TB up to 64TB, all with eight M.2 SSDs and all capable of up to 26,000 MB/s throughput. Hey, wait a minute, this is great news for the average man. What this means is 26,000 MB/s throughput can be had for as little as $1,299 thanks to OWC's know-how. Amazing. You, too, can play 16 streams of 8K video via the OWC Accelsior 8M2, as demonstrated by this video:

The Accelsior 8M2 is built on OWC's PCIe Gen4 x16 RAID card featuring a Broadcom PCIe Gen4 eight series PEX switch managing eight onboard M.2 slots. The card requires additional power via a 6-pin VGA power cable. The SSDs and PEX switch are cooled by a heavy-duty solid aluminum and copper heat sink with thermal pads and active cooling. This single-slot card is about the length of a high-end graphics card.

The card can be purchased without SSDs for $799. With SSDs, pricing ranges from $1,299 for 2TB on up to $12,999 for 64TB. The card comes with a key for OWC's proprietary SoftRAID utility, making it as easy as a few clicks to create, monitor, and manage RAID arrays.

Drive Details

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 01 | TweakTown.com
VIEW GALLERY - 21 IMAGES
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 02 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 03 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 04 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 05 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 06 | TweakTown.com

Jon's AMD Test System Specifications

Buy at Amazon

OWC Accelsior 8M2 4TB

TodayYesterday7 days ago30 days ago
$1149.00$1149.00-
* Prices last scanned on 1/25/2022 at 3:44 pm CST - prices may not be accurate, click links above for the latest price. We may earn an affiliate commission.

OWC SoftRAID

OWC has a proprietary RAID utility called SoftRAID to create and manage RAID arrays on its RAID-capable products. This is what we used to create the powerful RAID 0 arrays we used for this review. You can see what SoftRAID can do here.

We will note that the Accelsior 8M2 can be configured as bootable if desired, but we don't recommend it be used as a boot volume.

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 07 | TweakTown.comOWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 08 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 09 | TweakTown.comOWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 10 | TweakTown.com

The Accelsior 8M2 can be configured in various RAID configurations, including RAID 10 for MAC. For this review, we choose RAID 0 with a 512K stripe size to enable peak performance. Our NTFS formatted RAID 0 volume yields 3.5TB available to the user.

Synthetic Benchmarks: CDM, Anvil, ATTO, Blackmagic, AJA

CrystalDiskMark

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 11 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 12 | TweakTown.com

Not quite 26,000 MB/s with this test, but rest assured, we will get there with another test. Nevertheless, mind-blowing throughput, especially considering the small-cap Gen3 SSDs populating the card. The magic of this card is on display as 16 lanes of Gen3 would typically top out at about 14,000 MB/s max.

Anvil's Storage Utilities

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 13 | TweakTown.com

As we've seen from previous PEX switched cards, sequential speeds are done as RAID 0, while random performance is the same as we get from a single drive. For its intended use spectrum, sequential throughput is all that matters.

ATTO

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 14 | TweakTown.com

And there we have it, more than 26,000 MB/s throughput. 25.97 GB/s = 26,593 MB/s. It's just mind-blowing that this kind of throughput is possible with a 4TB array. Like we said, 26 GB/s on the cheap. Amazing.

Blackmagic Disk Speed

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 15 | TweakTown.com

OWC markets its Accelsior 8M2 at content creators, and for many of them, Blackmagic is the standard benchmark used to determine storage efficacy. As you can see, this baby can easily handle any video content that may be thrown in its direction.

AJA Disk Test

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 16 | TweakTown.com
OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 17 | TweakTown.com

We like AJA for testing SSDs that are geared toward content creation because it tests with various video codecs of various file sizes. We chose Canon 4K RAW at a 64GB file size. We are showing both MB/s and FPS results. With results like this, it's no wonder the Accelsior 8M2 is targeted for professional video processing applications.

Real-World Testing: TransfersPCM10

Transfer Rates

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 18 | TweakTown.com

These write transfer rates might seem a little slow, but they are actually by far the best we've obtained from a flash-based storage device arrayed with Gen3 SSDs. Our 100GB data transfer is composed of more than 62,000 files of random types of data, making it very hard to swallow for any storage device.

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 19 | TweakTown.com

Our read transfer file is more to the Accelsior's liking because it is a single Zip file. 6,483 MB/s to the host is fast as hell, especially for a single thread.

PCMark 10 Data Drive Benchmark

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 20 | TweakTown.com

Due to the random data nature of this test, it is a bit outside the wheelhouse of what the Accelsior 8M2 is intended for; however, it does give us some insight as to how it would function as a typical consumer data drive. How does it do? Outstanding.

Final Thoughts

So, even though we received a 4TB SSD when we were expecting it to be 32-64TB, we are glad it turned out this way. We had no idea that an SSD with up to 26,000 MB/s throughput could be had for a mere $1,699. This is fantastic as we see it because OWC has enabled professional performance of this nature to be within reach for small startups or even the guy creating content from a home office PC.

OWC Accelsior 8M2 4TB PCIe RAID Card - 26 GB/s on the cheap 21 | TweakTown.com

The Accelsior 8M2 does what it is intended to do with near perfection. It is plug and play, requiring no drivers to get it running. Add OWC's exclusive SoftRAID utility into the mix, and you have a legit professional RAID disk that is among the best in the world, and as such, it has earned our highest award.

Buy at Amazon

Performance

99%

Quality

95%

Features

99%

Value

100%

Overall

98%

The Bottom Line

26 GB/s for $1,699 makes the 4TB Accelsior 8M2 a must have for content creators.

TweakTown award
98%

OWC Accelsior 8M2 4TB

TodayYesterday7 days ago30 days ago
$1149.00$1149.00-
* Prices last scanned on 1/25/2022 at 3:44 pm CST - prices may not be accurate, click links above for the latest price. We may earn an affiliate commission.

Jon joined the TweakTown team in 2013 and has since reviewed 100s of new storage products. Jon became a computer enthusiast when Windows XP launched. He was into water cooling and benching ATI video cards with modded drivers. Jon has been building computers for others for more than 10 years. Jon became a storage enthusiast the day he first booted an Intel X25-M G1 80GB SSD. Look for Jon to bring consumer SSD reviews into the spotlight.

Newsletter Subscription
We openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion. If any company representative wishes to respond, we will publish the response here. Please contact us if you wish to respond.
Newsletter Subscription
Latest News
View More News
Latest Reviews
View More Reviews
Latest Articles
View More Articles