Sandisk ssd plus and z410 sata iii ssd review


To date no SMI 2256 controlled SSD has been able khổng lồ earn a recommendation. Will SanDisk"s SSD Plus or Z410 be the first?

As TLC-based SSDs come lớn the forefront of the consumer based value SSD segment, we have been inundated with emails from readers wanting lớn know what super low-cost TLC-based SATA SSD is the best bang for the buchồng. Our readers want to know primarily about planar-based TLC SSDs at the 480GB capacity point. Consumers are really interested in getting a half terabyte of fast storage for about a hundred bucks. To us, this seems like a fairly easy answer. Based on our testing, most notably our transfer testing, we feel that Phison S10-powered planar TLC SSDs in a 480GB capacity offer the best performance for around $100. However, a few of our readers wanted lớn know what we thought of SanDisk"s SSD Plus & Z410 because they sell for roughly the same cost as S10-powered SSDs at similar capađô thị points.

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It would be easy lớn just dismiss the SSD Plus and Z410 as inferior due lớn the fact that they are both DRAM-less designs và in all likelihood would not deliver Phison S10 cấp độ performance even though they sell for roughly the same price. That, & the fact that all of the SMI 2256 controlled drives we"ve tested khổng lồ date have been underwhelming lớn say the least. That said, in reality we had no idea how the SSD Plus or Z410 actually perkhung, because SanDisk chose not to lớn sample either lớn the reviews community. Is this because performance is that bad? Or, is it because they don"t want to lớn create competition within their own product stack?

To answer our readers" questions about the SSD Plus và Z410 we decided lớn purchase some of our own & find out first hvà if either are viable options khổng lồ the plethora of Phison S10 powered planar TLC SSDs on the market.

SanDisk pairs their own 15nm planar TLC (Triple-Level-Cell or 3-bit per cell) flash with SMI"s 4-channel SM2256S TLC specific controller on both the SSD Plus & Z410. This version of SMI"s controller allows for a DRAM-less kiến thiết which lowers overall SSD production costs. We did not notice any physical difference in PCB components between the SSD Plus and Z410 480GB SSDs. Same flash, same controller, same PCB. We believe sầu the only difference between the two drives is firmware. Both drives employ SLC caching lớn boost burst write performance. The SSD Plus comes with downloadable cloning software, SanDisk"s SSD Dashboard and a stick-on plastic spacer. SanDisk states the SSD Plus is ideal for typical PC workloads & is sold as a "For Home" nâng cấp. The Z410 is targeted as a cost-efficient business solution that has been validated for several OEM platforms. The Z410 is sold as a drive only solution. Both SSDs are available as cased designs only; there is no M.2 variant. Both the SSD Plus & Z410 feature low cost all plastic enclosures, which in our opinion makes them seem of inferior chất lượng.

All plastic enclosures certainly aren"t a khuyến mãi breaker; khổng lồ us its more about performance so let"s take a cthất bại look at SanDisk"s super low cost planar TLC offerings.


Both the SSD Plus & Z410 are available in three capacities: 120GB, 250GB, và 480GB. SanDisk only lists sequential read/write performance for the SSD Plus: 120GB up khổng lồ 530/400 MB/s, 240GB up lớn 530/440 MB/s, 480GB up to 535/445 MB/s. SanDisk backs the SSD Plus with a limited 3-year warranty.

SanDisk provides more detailed specifications for the Z410. 120GB: Sequential read/write up to 535/410 MB/s. Max 4K random read/write up lớn 36/54K IOPS at QD32. TBW 40TB, MTTF 1.75 million hours. 240GB: Sequential read/write up lớn 535/440 MB/s. Max 4K random read/write up lớn 36/66K IOPS at QD32. TBW 80TB, MTTF 1.75 million hours. 480GB: Sequential read/write up to lớn 535/445 MB/s. Max 4K random read/write up to 37/68K IOPS at QD32. TBW 120TB, MTTF 1.75 million hours. SanDisk backs the Z410 with a limited 3-year warranty.

The SSD Plus ships in a smaller red & Trắng themed packaging. There is an image of the enclosed drive on the front. The capađô thị of the enclosed SSD is listed on the upper right corner. The Z410 ships in a blaông chồng themed plain looking box. The back of the SSD Plus packaging is White và offers little information about the enclosed SSD other than its 3-year limited warranty and SATA III interface. The back of the Z410"s packaging lists the drives size factor, capathành phố, date of manufacture and shipping firmware.

Both SSDs are cradled in clear plastic trays for protection. The SSD Plus includes a printed user/warranty guide, stick-on plastic spacer & a card that informs you where to go to tải về SanDisk"s SSD Dashboard utility software.

The front/baông xã of the enclosure features a manufacturer"s label that lists the drive"s Mã Sản Phẩm number, capathành phố, serial number & various bits of other relevant information.

Both drives have identical PCB"s và components, so we are only going to lớn detail one of them. The PCB is a tiny DRAM-less design. This side of the PCB houses the drive"s controller và two flash packages.

This side of the PCB houses two additional flash packages.

A detailed view of the SXiaoMI SM2256S 4-channel controller that powers both SSDs.

A detailed view of one of the drive"s SanDisk branded 15nm TLC flash packages.

Test System Setup and Properties

Jon"s Consumer SSD đánh giá Test System Specifications

Video Card: Onboard Video Drivers: Hãng sản xuất Intel RAID option ROM version & Hãng sản xuất Intel RST driver version

We would lượt thích khổng lồ thank ASRochồng, Crucial, Hãng sản xuất Intel, Corsair, RamCity, IN WIN, và Seasonic for making our demo system possible.

Drive sầu Properties

240GB SSD Plus OS Disk 75% full

480GB SSD Plus OS Disk 75% full

240GB Z410 OS Disk 75% full

480GB Z410 OS Disk 75% full

The majority of our testing is performed with our demo drive as our boot volume. Our boot volume is 75% full for all OS Disk "C" drive testing to replicate a typical consumer OS volume implementation. We feel that most of you will be utilizing your SSDs for your boot volume & that presenting you with results from an OS volume is more relevant than presenting you with empty secondary volume results.

System settings: Cstates and Speed Stepping are both disabled in our systems BIOS. Windows High-Performance power plan is enabled. Windows write caching is enabled, & Windows buffer flushing is disabled. We are utilizing Windows 10 Pro 64-bit OS for all of our testing.

Synthetic Benchmarks – ATTO và Anvil Storage Utilities


Version & / or Patch Used: 2.47

ATTO is a timeless benchmark used to provide manufacturers with data used for kinh doanh storage products.

Compressible sequential read/write transfers max out at 545/459 MB/s. Keep in mind this is our OS volume, và it is filled to 75% of its total capathành phố. Maximum sequential read performance is achieved at a 2MB transfer size, maximum sequential write performance at 8MB transfers.

Sequential Write

The choppy write performance with data on our OS disk is typical of many of today"s TLC-based SSDs. The SSD Plus displays a lot of variability, the Z410 displays a more conventional performance curve. The BP5e and TRION 150 exhibit far better sequential write performance than the rest of the drives in our thử nghiệm pool. The SP550 & BX200 are both SM2256 powered và both have sầu DRAM caching.

Sequential Read

Anvil Storage Utilities

Version & / or Patch Used: 1.1.0

Anvil"s Storage Utilities is a storage benchmark designed khổng lồ measure the storage performance of SSDs. The Standard Storage Benchmark performs a series of tests; you can run a full kiểm tra or just the read or write demo, or you can run a single chạy thử, i.e. 4k QD16.

Anvil"s scoring gives a good indication of a drive"s overall performance. We have six SM2256 powered SSDs in our test pool và all six are completely eviscerated by the BP5e & TRION 150. It"s not hard to see why no SM2256 powered SSD has ever received a recommendation. The Z410 240GB earns the dubious honor of the lowest Anvil"s score for a SATA III SSD to date. It"s even lower than OWC"s 2TB Mercury Electra.

There is a well-defined pecking order khổng lồ this test. S10 powered SSDs on top, then SM2256 SSDs with DRAM and then DRAM-less SM2256 SSDs.

(Anvil) Write IOPS through Queue Scale

The well-defined pecking order stays the same but, with more definition to lớn it due to the 240GB SSD Plus và Z410"s abysmal write performance.

Synthetic Benchmarks – CrystalDiskMark & AS SSD


Version and / or Patch Used: 3.0 Technical Preview

CrystalDiskMark is disk benchmark software that allows us lớn benchmark 4k & 4k queue depths with accuracy. Note: Crystal Disk Mark 3.0 Technical PReview was used for these tests since it offers the ability khổng lồ measure native commvà queuing at QD4.

The BP5e và TRION 150 easily dispatch the competition once again. The BX200 and SP550 put up a fight while the SSD Plus & Z410 display some of the worst random read performance we"ve ever seen.

The BP5e và TRION 150 deliver the best overall performance in this chạy thử. The SSD Plus và Z410"s vì much better with the write portion of this test than the read portion, although it"s still not very good.


Version and / or Patch Used: 1.7.4739.38088

AS SSD determines the performance of SSDs. The tool contains four synthetic as well as three practice tests. The synthetic tests are to lớn determine the sequential & random read & write performance of the SSD.

AS SSD is a demanding demo và it manages to lớn dismantle the SSD Plus & Z410. The BX200 and SP550 deliver decent results. The BP5e & TRION 150 again assert their dominance, cutting through this demo with ease.

Benchmarks -Trace Based- PCMark Vantage, PCMark 7 và PCMark 8

Moderate Workload Model

We categorize these tests as indicative of a moderate workload environment.

PCMark Vantage - Hard Disk Tests

Version và / or Patch Used:

The reason we lượt thích PCMark Vantage is because the recorded traces are played back without system stops. What we see is the raw performance of the drive. This allows us to lớn see a marked difference between scoring that other trace-based benchmarks vày not exhibit. An example of a marked difference in scoring on the same drive sầu would be empty vs. filled vs. steady state.

We run Vantage three ways. The first run is with the OS drive 75% full to simulate a lightly used OS volume filled with data khổng lồ an amount we feel is common for most users. The second run is with the OS volume written inlớn a "Steady State" utilizing SNIA"s guidelines. Steady state testing simulates a drive"s performance similar khổng lồ that of a drive that been subjected lớn consumer workloads for extensive amounts of time. The third run is a Vantage HDD chạy thử with the thử nghiệm drive attached as an empty, lightly used secondary device.

OS Volume 75% Full - Lightly Used

There"s a big difference between an empty drive, one that"s 75% full/used, and one that"s in a steady state.

The important scores to lớn pay attention to are "OS Volume Steady State" and "OS Volume 75% full." These two categories are most important because they are indicative of typical of consumer user states. When a drive sầu is in a steady state, it means garbage collection is running at the same time it"s reading/writing. This is exactly why we focus on steady state performance.

The SSD Plus và Z410 make a bit of a comebachồng with this chạy thử. However, it"s not enough to ảo diệu for the dismal performance to lớn this point. Crucial"s BX200 manages to get a win for the first time, followed by the SP550 & then the BP5e. It is interesting khổng lồ note that the SSD Plus và Z410"s, with the exception of the 240GB SSD Plus, are delivering better performance in a steady state than they are at 75% full. We don"t often see this, it"s likely an indication of the lachồng of consistency inherent to lớn DRAM-less designs.

PCMark 7 - System Storage

Version & / or Patch Used: 1.4.0

We will look to lớn Raw System Storage scoring for evaluation because it"s done without system stops and, therefore, allows us to see significant scoring differences between drives.

ADATA"s SP550 takes a win for the first time. The SSD Plus and Z410 again deliver embarrassing performance, with the 240GB Z410 again setting a new record for futility. Looking at the benchmark screenshot taken of the SSD Plus 480GB we see something very rare indeed; the system storage score is higher than the raw system storage score.

PCMark 8 - Storage Bandwidth

Version và / or Patch Used: 2.4.304

We use PCMark 8 Storage benchmark to test the performance of SSDs, HDDs, and hybrid drives with traces recorded from Adobe Creative sầu Suite, Microsoft Office, và a selection of popular games. You can chạy thử the system drive or any other recognized storage device, including local external drives. Unlike synthetic storage tests, the PCMark 8 Storage benchmark highlights real-world performance differences between storage devices.

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PCMark 8 is the most intensive sầu moderate workload simulation we run. With respect khổng lồ moderate workloads, this kiểm tra is what we consider the best indicator of a drive"s performance. This time the 240GB SSD Plus manages to take the win for losing, setting a new record low score for PCMark 8 testing. It"s safe to at this point that SanDisk"s super low cost TLC SSD"s are the worst performing SSDs currently on the market. The SP550 wins this demo, but it"s too little too late, clearly not enough khổng lồ biến hóa for its dismal synthetic performance.

Benchmarks (Secondary) - Max IOPS, Response và Transfer Rates

Iometer - Maximum IOPS

Version and / or Patch Used: Iometer 2014

We use Iometer to lớn measure high queue depth performance. (No Partition)

With our configuration, we are able to lớn exceed SanDisk"s maximum read IOPS specifications. In fact, we are able to lớn more than double it. None of the SanDisk offerings are able khổng lồ match their specified maximum write IOPS specifications, not by a long shot. MDD"s BP5e delivers the best performance of the bunch scoring a win for both read và write performance.

Iometer - Disk Response

Version and / or Patch Used: Iometer 2014

We use Iometer khổng lồ measure disk response times. Disk response times are measured at an industry accepted standard of 4K QD1 for both write và read. Each chạy thử runs twice for 30 seconds consecutively, with a 5-second ramp-up before each kiểm tra. We partition the drive/array as a secondary device for this testing.

The SSD Plus and Z410 display the worst read response for a SATA III SSD we"ve sầu ever witnessed. The BP5e takes the win for the best read response. The SP550 wins for the best write response.

DiskBench - Directory Copy

Version & / or Patch Used:

We use DiskBench to lớn time a 28.6GB block (9,882 files in 1,247 folders) composed primarily of incompressible sequential & random data as it"s transferred from our DC P3700 PCIe NVME SSD khổng lồ our thử nghiệm drive. We then read from a 6GB zip tệp tin that"s part of our 28.6GB data bloông chồng khổng lồ determine the chạy thử drive"s read transfer rate. Our system is restarted prior to the read demo khổng lồ clear any cached data, ensuring an accurate test result.

The main drawbachồng lớn planar-based TLC SSDs is sustained write performance. This particular demo happens lớn be the kiểm tra we place the most importance on with regard lớn TLC SSDs. Terrible write transfer rates are inherent to SMI"s SM2256 controller, which is THE reason no SM2256 powered SSD has ever received a recommendation. When an SSD can"t even write a large chunk of data as fast as even low performing spinning disk drives, it"s not something we will ever be able khổng lồ recommkết thúc khổng lồ our readers. In contrast to lớn the SM2256 powered SSDs the S10 powered SSDs deliver respectable sustained write transfer rates. Direct write lớn die for the win. This testing display"s why we will continue to lớn recommend Phison S10 powered TLC SSDs lớn our readers as the best bang for the buông chồng in the super low cost segment.

Benchmarks (Secondary Volume) - PCMark 8 Extended

Futuremark PCMark 8 Extended

Heavy Workload Model

PCMark 8"s consistency thử nghiệm simulates an extended duration heavy workload environment. PCMark 8 has built-in, command line executed storage testing. The PCMark 8 Consistency demo measures the performance consistency & the degradation tendency of a storage system.

The Storage thử nghiệm workloads are repeated. Between each repetition, the storage system is bombarded with a usage that causes degraded drive sầu performance. In the first part of the chạy thử, the cycle continues until a steady degraded level of performance has been reached. (Steady State)

In the second part, the recovery of the system is tested by allowing the system to lớn idle and measuring the performance after 5-minute long intervals. (Internal drive sầu maintenance: Garbage Collection (GC)) The test reports the performance cấp độ at the start, the degraded steady-state, and the recovered state, as well as the number of iterations required to reach the degraded state và the recovered state.

We feel Futuremark"s Consistency Test is the best demo ever devised to show the true performance of solid state storage in an extended duration heavy workload environment. This test takes on average 13 lớn 17 hours to complete and writes somewhere between 450GB and 14,000GB of chạy thử data depending on the drive sầu. If you want lớn know what an SSDs steady state performance is going khổng lồ look like during a heavy workload, this demo will show you.

Here"s a breakdown of Futuremark"s Consistency Test:

Precondition phase:

1. Write to the drive sầu sequentially through up to the reported capacity with random data.

2. Write the drive sầu through a second time (khổng lồ take care of overprovisioning).

Degradation phase:

1. Run writes of random kích cỡ between 8*512 and 2048*512 bytes on random offsets for 10 minutes.

2. Run performance demo (one pass only).

3. Repeat 1 và 2 for 8 times, & on each pass increase the duration of random writes by 5 minutes.

Steady state phase:

1. Run writes of random kích cỡ between 8*512 and 2048*512 bytes on random offsets for 50 minutes.

Storage Bandwidth

PCMark 8"s Consistency demo provides a ton of data output that we use to judge a drive"s performance.

We consider steady state bandwidth (the xanh bar) our demo that carries the most weight in ranking a drive/arrays heavy workload performance. Performance after Garbage Collection (GC) (the orange and red bars) is what we consider the second most important consideration when ranking a drive"s performance. Trace-based steady state testing is where true high performing SSDs are separated from the rest of the paông xã.

We needed khổng lồ test the SSD Plus and Z410 to lớn confirm our suspicion that they were inferior and this is just more proof that our suspicions were indeed correct. This also lends more credence to lớn our never recommending any SMI SM2256 controlled SSD, while at the same time showing why we vì highly recommkết thúc Phison S10 powered TLC SSDs.

We chart our demo subject"s storage bandwidth as reported at each of the test"s 18 trace iterations. This gives us a good visual perspective sầu of how our kiểm tra subjects perform as testing progresses. This chart sheds more light on how the drives perform as they progress through the testing phases.

Total Access Time (Latency)

We chart the total time the disk is accessed as reported at each of the test"s 18 trace iterations. Low latency translates to the real-world as snappiness.

Disk Busy Time

Disk Busy Time is how long the disk is busy working. We chart the total time the disk is working as reported at each of the tests 18 trace iterations.

When latency is low, disk busy time is low as well.

Data Written

We measure the total amount of random data that our demo drive/array is capable of writing during the degradation phases of the consistency chạy thử. Pre-conditioning data is not included in the total. The total combined time that degradation data is written khổng lồ the drive/array is 470 minutes. This can be very telling. The better a drive/array can process a continuous stream of random data; the more data will be written.

Overprovisioning và write latency are the biggest factors that determine the outcome of this portion of the chạy thử. This shows us several things. First & most obvious is that the SSD Plus & Z410 are in a class of their own, the lowest class. Second, we can see that SP550"s 16nm Hynix TLC flash is superior khổng lồ the BX200"s 16nm Micron TLC flash. Lastly, we can see that the S10 is superior for the most part in comparison to lớn the SM2256.

Benchmarks (Secondary Volume) – 70/30 Mixed Workload

70/30 Mixed Workload Test (Sledgehammer)

Version and / or Patch Used: Iometer 2014

Heavy Workload Model

This demo hammers a drive so hard we"ve dubbed it "Sledgehammer". Our 70/30 Mixed Workload test is designed lớn simulate a heavy-duty enthusiast/workstation steady-state environment. We feel that a set of 70% read/30% write, full random 4K transfers best represents this type of user environment. Our thử nghiệm allows us to lớn see the drive sầu enter inlớn và reach a steady state as the thử nghiệm progresses.

Phase one of the chạy thử preconditions the drive for 1 hour with 128K sequential writes. Phase two of the kiểm tra runs a 70% read/30% write, full random 4K transfer workload on the drive for 1 hour. We log và chart (phase two) IOPS data at 5-second intervals for 1 hour (7trăng tròn data points). 60 data points = 5 minutes.

What we like about this chạy thử is that it reflects reality. Everything lines up, as it should. Consumer drives don"t outperform Enterprise-Class SSDs that were designed for enterprise workloads. Consumer drives based on old giải pháp công nghệ are not outperforming modern Performance-Class SSDs, etc.

Just when we thought it couldn"t get any worse for the SSD Plus và Z410 this happens. Even while filling the SSD Plus and Z410 with sequential writes the drives would drop lớn as low as 40MB/s, which is something we"ve sầu never seen before. The SP550 delivers the highest average performance, but does so with massive performance variability.

The SSD Plus & Z410 would drop to lớn as low as 30 IOPS with an average response time of nearly 1 second for long periods of time while running our preconditioned 70/30 random mixed workload.

We needed to lớn answer the question for our readers. Are the SSD Plus và Z410 viable options in the super low-cost class of SSDs? They are, for the most part, certainly faster than spinning rust buckets, but that"s not what we care about; a USB 3.0 stick is faster than a spinning rust bucket so that"s not the criteria they need to lớn meet. When compared khổng lồ other SDDs in the same price range, specifically Phison S10 powered TLC SSDs, both the SSD Plus & Z410 fall pitifully short. We know that SanDisk never intended these two drives to compete for any performance crown, but when they cost the same as others per gigabyte, a certain minimum amount of performance is lớn be expected. What we got from the all-plastic enclosed SSD Plus và Z410, was metaphorically speaking all-plastic performance.

We believe that at the heart of the matter is the heart of the SSD itself. SMI"s SM2256 4-channel controller consistently delivers lackluster performance that only gets worse in the absence of an onboard DRAM cabít. We have sầu never been able to recommkết thúc an SM2256 controlled SSD và the SSD Plus and Z410 only serve to lớn reinforce our negative sầu view of this particular controller. We have sầu lớn look no further than our sustained write transfer testing khổng lồ see exactly why we feel the way we do. When an SSD can"t even deliver sustained write performance that"s on par with a spinning HDD, we simply cannot overlook that fact.

Running SSD Plus & Z410 as our OS disk was nothing to write home page about. The drive sầu provided a decent boot experience and loaded programs in an acceptable manner, however, when multi-tasking, both did a face plant. They both provide a superior user experience khổng lồ that of a spinning disk unless you are doing something like installing a game or transferring even a moderate amount of data, both of which are comtháng tasks for the majority of users.

High Cost to lớn Performance Ratio Low Read Performance Low Sustained Write Performance All Plastic Enclosure
Quality including Design and Build50%
General Features50%
Bundle và Packaging60%
Value for Money50%

The Bottom Line: Steer clear of these SSDs; they offer nothing but disappointment.

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Jon Coulter

Jon joined the team in 2013 và 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 đoạn phim 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 Hãng sản xuất Intel X25-M G1 80GB SSD. Look for Jon khổng lồ bring consumer SSD Reviews inlớn the spotlight.

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