The Samsung 960 EVO (1TB) Review
by Billy Tallis on November 15, 2016 10:00 AM ESTATTO
ATTO's Disk Benchmark is a quick and easy freeware tool to measure drive performance across various transfer sizes.
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By the end of the test, the 960 EVO and 960 Pro are performing identically. The 960 EVO takes longer to get up to full read speed, and the 960 Pro turns in some slightly better write speeds before thermal throttling levels things out.
AS-SSD
AS-SSD is another quick and free benchmark tool. It uses incompressible data for all of its tests, making it an easy way to keep an eye on which drives are relying on transparent data compression. The short duration of the test makes it a decent indicator of peak drive performance.
Both AS-SSD sequential tests show that the 960 EVO's peak performance really is second only to the 960 Pro, even if in longer tests some other models are able to outperform the 960 EVO.
Idle Power Consumption
Since the ATSB tests based on real-world usage cut idle times short to 25ms, their power consumption scores paint an inaccurate picture of the relative suitability of drives for mobile use. During real-world client use, a solid state drive will spend far more time idle than actively processing commands. Our testbed doesn't support the deepest DevSlp power saving mode that SATA drives can implement, but we can measure the power usage in the intermediate slumber state where both the host and device ends of the SATA link enter a low-power state and the drive is free to engage its internal power savings measures.
We also report the drive's idle power consumption while the SATA link is active and not in any power saving state. Drives are required to be able to wake from the slumber state in under 10 milliseconds, but that still leaves plenty of room for them to add latency to a burst of I/O. Because of this, many desktops default to either not using SATA Aggressive Link Power Management (ALPM) at all or to only enable it partially without making use of the device-initiated power management (DIPM) capability. Additionally, SATA Hot-Swap is incompatible with the use of DIPM, so our SSD testbed usually has DIPM turned off during performance testing.
Idle power for the 960 EVO is the same as for the 960 Pro. Our usual testbed configuration does not engage any explicit power saving modes so the 960 EVO idles at 1.2 W where most SATA drives will draw much less than 1W. On systems that make use of NVMe power saving capabilities, idle power will be only a few times higher than the best SATA drives, and this is without making full use of PCIe link power management.
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Gigaplex - Tuesday, November 15, 2016 - link
I think they're trying to say the performance isn't great. Failing means we don't get to see the performance numbers.Dave Null - Tuesday, November 15, 2016 - link
This is indeed frustrating. I was expecting the 960 Pro drives I preordered to arrive last week. Now Amazon is reporting January.Something major must have happened for Samsung to miss its release date so badly, but nobody is reporting it.
Flying Aardvark - Wednesday, November 16, 2016 - link
I went with the 600P 1TB instead.. had it for 2 weeks now.. I love it. Being M.2 I didn't buy it for heavy workloads anyway so it won't throttle. But if I needed performance I'd go with the Intel 750 instead of what I got.Phattio - Wednesday, November 16, 2016 - link
my 960 Pro 512GB arrives today. ordered from best buy online.Kristian Vättö - Thursday, November 17, 2016 - link
There is a simple explanation: NAND shortage.XabanakFanatik - Thursday, November 17, 2016 - link
Of course! I'm glad you had an article about it. Oh, wait.I'm fairly certain that people need to know that despite your reviews coming out on time that they won't be able to buy the products for months.
zanon - Tuesday, November 15, 2016 - link
Interesting to see the rate at which these continue to progress, and I'm glad Samsung continues to ramp performance aggressively. One thing I wish you could find some way to integrate is at least a summary of reliability features like how a drive handles power loss, and (depending on feasibility if you are mainly testing short-term loaners) maybe some followup a few months down the line with longer term performance/reliability observations. While Samsung has long been at or near the pinnacle of out-of-box raw performance, they've also had a history of playing a bit fast and loose with reliability and support, and I think that deserves some sort of recognition. I have a lot of Intel 730s that replaced or were chosen over Samsung drives of the time after a number of poor experiences with the long term usage 840 series for example, and while the 840s were superior in many respects on paper and Day 1, by Day 100+ and under stress they developed issues that were not immediately apparent.Also, a small typo on the final page, looks like at least one of the $/GB (the 750@1TB) isn't right.
Billy Tallis - Tuesday, November 15, 2016 - link
I am working on some longer-term data and performance retention testing, but the amount of extra equipment that requires means not many drives will get that treatment. Unexpected power loss testing might be more feasible, but for the near future the testbed is too busy for me to add something like this to the routine.The Intel 750 doesn't fit conveniently in the price comparison chart because of its unusual capacities. The prices listed are for the 400GB and 1.2TB models, and the 800GB model isn't listed in the table.
Bullwinkle J Moose - Tuesday, November 15, 2016 - link
Speaking of long-term data retention......If I had 2 SSD's, one unplugged and stored in a closet and one plugged in with power on but idle and unused, would the one plugged in retain data longer even though it is unused????
patrickjp93 - Thursday, November 17, 2016 - link
Yes. There is wear leveling and data refresh in modern SSDs (840/Evo being the exception with cell band drift)