There's been a lot of recent talk about the Samsung SM951 M.2 PCIe SSD. It was supposed to launch as an NVMe product, but ended up coming out in AHCI form. We can only assume that Samsung chose to hold back on their NVMe-capable...
PROS (SM951 NVMe):
Extremely good performance in a very small package.
NVMe technology greatly reduces CPU overhead during high IOPS usage.
M.2 form factor enables use in desktop systems with no other PCIe slots available.
Let's take a look at a couple of ATTO runs. First the SSD 750:
[inline:files/review/2015-04-15/SSD 750 ATTO-10.png]
Now for the SM951 NVMe:
[inline:files/review/2015-04-15/SM951 NVMe ATTO-10.png]
We are trying something different here. Folks tend to not like to click through pages and pages of benchmarks, so I'm going to weed out those that show little to no delta across different units (PCMark). I'm also going to group results...
We have shifted over to combining our results into two groupings for consumer reviews. First up is sequential performance:
Not much to take apart here, but I'll do what I can:
With the stickers removed, we can see the controllers and flash. The XP841 (top) and AHCI SM951 (bottom) have similar component counts...
The other day we took a look at the ICY DOCK ToughArmor MB996SP-6SB and ICYBento MB559U3S-1S. Today we'll move onto a couple of larger products in their lineup:
To the left is the...
It looks like Samsung has finally figured this one out, and they have done so in a way that actually puts an 840 EVO above other SSDs. Allow me to explain. Typical SSDs will see random writes to some existing files (pagefile, etc). Those files will in...
I tested multiple samples with the following procedure, but I will single out single units to show the various peformance differences. I'll start with a 120GB 840 EVO:
Our test sample...
The tale of the Samsung 840 EVO is a long and winding one, with many hitches along the way. Launched at the Samsung 2013 Global SSD Sumit, the 840 EVO was a unique entry into the SSD market. Using 19nm planar TLC flash, the EVO would have had only...