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Performance<br />
All testing was done on an Asus X99 Deluxe/U3.1 motherboard with<br />
32GB of DDR4 and an Intel Core i7-5820K. We used the motherboard’s<br />
integrated <strong>PC</strong>Ie-only M.2 slot for the AHCI/NVMe SSDs, while SATA<br />
drives were tested using the aforementioned Addonics AD2M2S-PX4<br />
<strong>PC</strong>Ie expansion card. Note that the AD2M2S-PX4 doesn’t have a<br />
dedicated SATA HBA (host bus adapter). It simply uses SATA cables<br />
from the motherboard that plug into the card.<br />
AS SSD 10GB Sequential<br />
10 GB Test<br />
76<br />
Write<br />
319<br />
549<br />
925<br />
1,176<br />
1,501<br />
Read<br />
508<br />
650<br />
1,009<br />
1,795<br />
1,931<br />
0 500 1,000 1,500 2,000 2,500<br />
MBps (LONGER BARS ARE BETTER)<br />
Kingston HyperX<br />
Predator <strong>PC</strong>Ie<br />
Samsung SM951<br />
<strong>PC</strong>Ie NVMe<br />
Samsung SM951<br />
<strong>PC</strong>Ie AHCI<br />
<strong>PC</strong>Ie M.2 drives rock when it comes to raw sequential throughput.<br />
Samsung 850<br />
EVO M.2<br />
Plextor<br />
M6e AHCI<br />
As you can see from the charts, the results were split dramatically<br />
by technology. The <strong>PC</strong>Ie drives won by huge margins in flat-out<br />
sequential read speed, something you’ll notice when you copy large<br />
files. NVMe proved faster than AHCI when it’s fed small files from<br />
multiple queues (the AD SSD 4K/64 threads test). Whether this scenario<br />
70
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