Samsung SSD 850 EVO (120GB, 250GB, 500GB & 1TB) Review
by Kristian Vättö on December 8, 2014 10:00 AM ESTPower Consumption
Samsung has always done a great job at power efficiency and the 850 EVO is no exception. In slumber mode the 850 EVO is one of the most efficient drives we have seen and it also explains why Samsung went with the new MGX controller as the 500GB and smaller capacities consume about 30% less power than the 1TB model.
Load power consumption is also exceptional, although once again I should note that the writes are hitting the SLC buffer, which is more power efficient than writing to the TLC array. Right after I stopped writing to the drive I saw the power consumption increase to ~3W while the drive was reading data from SLC and writing it to TLC, but that didn't take longer than 10-20 seconds or so (though it depends on how much you write to the drive). I have some tests prepared for our 2015 SSD suite that will look at power over time more closely, so it will also better account for SLC to MLC/TLC writes.
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KAlmquist - Monday, December 8, 2014 - link
My guess is that Samsung doesn't have the ability to produce very much V-NAND. So the 850 PRO, and now the 850 EVO, are priced to encourage most people to choose SSD's from the 840 line rather than the 850 line, preventing demand for the 850 line from exceeding the supply.rms141 - Monday, December 8, 2014 - link
The absence of the Samsung 840 Pro from the Storage Bench 2013 section is pretty odd. Why wouldn't you include the previous generation's higher performing product? This is a little bit like publishing a GTX 970 review without including the GTX 780 for reference.Kristian Vättö - Tuesday, December 9, 2014 - link
You can always use the Bench tool to compare any and all drives that we have tested over the years:http://www.anandtech.com/bench/SSD/65
fokka - Monday, December 8, 2014 - link
it doesn't make much sense to complain about the msrp when the drive is just now trickling to retailers. you're probably not gonna make a good deal on a 850 evo before christmas, but the prices will come down considerably in q1/q2 2015, they always do.that said, i wouldn't mind paying a couple bucks more for a 850, compared to a 840, since it's just the all around better drive and it's lower power consumption alone makes it the better option for laptops.
pitted against an mx100 it might be a tougher sell, but let's just wait a bit for the prices to come down and give the early adopters some time to beta-test the firmware for us in the meantime.
Morawka - Tuesday, December 9, 2014 - link
Does TurboWrite, native encryption, and TRIM work in RAID 0 on the 850 EVO? Thats the only way i would invest $500+ into a SSD still bottlenecked by Sata 6hojnikb - Tuesday, December 9, 2014 - link
All of that should work with appropriate motherboard/storage drives, because drive itself is not aware whenever is in RAID or not.hojnikb - Tuesday, December 9, 2014 - link
*driverspaesan - Tuesday, December 9, 2014 - link
I just got a 1TB 840 evo for $369. No way the 850 evo is worth the extra $100.R3MF - Tuesday, December 9, 2014 - link
How do you conduct this review of a perfomance oriented SSD without discussing:1. m.2 format (or lack thereof)?
2. PCIe 3.0 4x m.2 performance (vs SATA 6G)?
3. NVME m.2 performance (vs SATA 6G)?
It is the end of 2014, who seriously spends £320 on a 1TB performance SSD without considering the high-speed m.2 drives just around the corner, to which a growing number of enthusiasts have empty slots on their shiny new motherboards?
hojnikb - Tuesday, December 9, 2014 - link
>How do you conduct this review of a perfomance oriented SSD without discussing:EVO is not a performance oriented drive. 850PRO is. And this was already discussed in other reviews/seperate articles.