Samsung MUF-256DA USB-C Flash Drive Evaluation: Thumb-Sized Efficiency Consistency

Transportable SSDs have seen nice demand over the previous couple of years. Due to developments in smartphones, the quantity of user-generated content material that must be backed up or transferred from one gadget to a different has grown exponentially. Whereas native flash controllers are actually able to delivering USB 3.2 Gen 2×2 (20 Gbps) speeds with the most recent 3D NAND, the ever-present thumb drive (known as UFDs – brief for USB flash drives) has additionally managed to evolve. Not like high-performance moveable SSDs, these UFDs are service provider merchandise – below blind exams, most customers would not be capable of differentiate a product in a single efficiency class from one other vendor’s providing in the identical class. We not often evaluate thumb drives (having made exceptions for the Mushkin Atom and Strontium Nitro Plus Nano up to now, due to some distinctive points), however Samsung’s supply of the MUF-256DA/AM USB Kind-C Flash Drive piqued our curiosity. Having final reviewed a compact UFD again in 2016, we additionally wished to take a look at the enhancements made on this product class through the years.

Transportable SSDs have seen nice demand over the previous couple of years. Due to developments in smartphones, the quantity of user-generated content material that must be backed up or transferred from one gadget to a different has grown exponentially. Whereas native flash controllers are actually able to delivering USB 3.2 Gen 2×2 (20 Gbps) speeds with the most recent 3D NAND, the ever-present thumb drive (known as UFDs – brief for USB flash drives) has additionally managed to evolve. Not like high-performance moveable SSDs, these UFDs are service provider merchandise – below blind exams, most customers would not be capable of differentiate a product in a single efficiency class from one other vendor’s providing in the identical class. We not often evaluate thumb drives (having made exceptions for the Mushkin Atom and Strontium Nitro Plus Nano up to now, due to some distinctive points), however Samsung’s supply of the MUF-256DA/AM USB Kind-C Flash Drive piqued our curiosity. Having final reviewed a compact UFD again in 2016, we additionally wished to take a look at the enhancements made on this product class through the years.

Introduction and Product Impressions

Samsung’s MUF-256DA is a compact USB Kind-C flash drive (UFD) out there in capacities starting from 64GB to 256GB. It sports activities a USB 3.2 Gen 1 (5 Gbps) interface. Samsung equipped us with a 256GB model to place by way of our strenuous evaluate course of. The UFD presents itself to the host system as a storage gadget, however doesn’t help fancy options resembling temperature or NAND well being reporting. It additionally does not help options resembling UASP or TRIM – points which are normally absent in compact UFDs.

The perfect comparability merchandise for the MUF-256DA would have been the Mushkin Atom and the Strontium Nitro Plus Nano. Nevertheless, each of those had been reviewed a few years again with a now-retired testbed and take a look at suite. Whereas our take a look at suite has retained the identical framework, modifications within the precise benchmarks imply that we will not evaluate previous outcomes towards those obtained with our newest testbed and take a look at suite.

The desk above presents a comparative view of the specs of the completely different USB flash storage units offered on this evaluate.

Testbed Setup and Analysis Methodology

The analysis routine for direct-attached storage units – moveable SSDs, storage bridges (together with RAID enclosures), and reminiscence playing cards – all make the most of the identical testbed and have comparable workloads with slight tweaks based mostly on the tip marketplace for the product. Our testbeds have stored tempo with the introduction of latest exterior interfaces – Thunderbolt 2, Thunderbolt 3, and USB 3.2 Gen 2 through Kind-C. In mid-2014, we ready a customized desktop based mostly on Haswell, which was then upgraded to Skylake in early 2016. A botched Thunderbolt 3 firmware improve on the Skylake machine meant that we needed to shift to the Hades Canyon NUC beginning in early 2019. With USB 3.2 Gen 2×2 gaining traction, the lack to make use of an add-in card within the Hades Canyon NUC meant that we needed to go looking for a brand new DAS testbed platform.

The 2021 AnandTech DAS Testbed

After contemplating numerous choices available in the market, we found out that the Quartz Canyon NUC (basically, the Xeon / ECC model of the Ghost Canyon NUC) was an excellent match for our necessities. Intel offered us with a pattern of the Quartz Canyon NUC, and ADATA helpfully sponsored 2x 16GB DDR4-2667 ECC SODIMMs and a PCIe 3.0 x4 NVMe SSD – the IM2P33E8 1TB.

The specs of the testbed are summarized within the desk above.

The 2021 AnandTech DAS Suite

The testbed {hardware} is just one section of the analysis. Over the previous couple of years, the everyday direct-attached storage workloads have additionally advanced. Excessive bit-rate 4K movies at 60fps have change into fairly widespread, and 8K movies are beginning to make an look. Recreation set up sizes have additionally grown steadily, due to excessive decision textures and paintings. Backups are inclined to contain bigger variety of information, a lot of that are small in measurement. The distributors have additionally appropriately responded, with 4TB bus-powered models already out there available in the market. Retaining these in thoughts, we have now adopted some tweaks to our analysis methodology.

The analysis scheme for DAS models includes a number of workloads that are described intimately within the corresponding sections.

• Artificial workloads utilizing CrystalDiskMark and ATTO
• Actual-world entry traces utilizing PCMark 10’s storage benchmark
• Customized robocopy workloads reflective of typical DAS utilization
• Sequential write stress take a look at

The brand new take a look at suite makes the next updates:

• Up to date CrystalDiskMark software program model to eight.0.2 from 7.0.0
• Elevated CrystalDiskMark workload span from 8GiB to 32GiB
• Restructured customm robocopy workloads, with multi-threaded copying enabled
• Temperature monitoring enabled throughout all idling intervals

The foremost replace is in our customized robocopy workloads – the sooner model transferred round 42GB of information forwards and backwards from the DAS over every of three iteration units for a complete of round 250GB of visitors. The brand new model ups this to round 95GB per iteration route for a complete of round 570GB of visitors.

The robocopy workloads have usually transferred information between the DAS and a RAM drive to take away any bottlenecks from the testbed’s storage subsystem. Within the new take a look at suite model, we additionally embody a disk-to-disk iteration set the place the entire suite (round 318GB) is transferred from the CPU-attached NVMe SSD to the DAS and again. This a part of the take a look at is just not enabled for storage units with inadequate capability (just like the Samsung MUF-256DA being reviewed at the moment).

Artificial Benchmarks – ATTO and CrystalDiskMark

Benchmarks resembling ATTO and CrystalDiskMark assist present a fast have a look at the efficiency of the direct-attached storage gadget. The outcomes translate to the instantaneous efficiency numbers that customers can anticipate for particular workloads, however don’t account for modifications in conduct when the unit is topic to long-term conditioning and/or thermal throttling. One more use of those artificial benchmarks is the power to collect info relating to help for particular storage gadget options that have an effect on efficiency.

Samsung claims learn speeds of as much as 400 MBps, however makes no claims about writes aside from noting that it’s anticipated to be decrease. These are backed up by the ATTO benchmarks offered beneath. ATTO benchmarking is restricted to a single configuration by way of queue depth, and is just consultant of a small sub-set of real-world workloads. It does enable the visualization of change in switch charges because the I/O measurement modifications, with optimum efficiency being reached round 512 KB for a queue depth of 4 – learn speeds of round 353 MBps, and writes coming in round 110 MBps.

ATTO Benchmarks
TOP: Samsung MUF-256DA 256GBKingston XS2000 500GBKingston DT Max 1TB	BOTTOM: Kingston XS2000 500GBKingston DT Max 1TBSamsung MUF-256DA 256GB

CrystalDiskMark. for instance, makes use of 4 completely different entry traces for reads and writes over a configurable area measurement. Two of the traces are sequential accesses, whereas two are 4K random accesses. Internally, CrystalDiskMark makes use of the Microsoft DiskSpd storage testing software. The ‘Seq128K Q32T1’ sequential traces use 128K block measurement with a queue depth of 32 from a single thread, whereas the ‘4K Q32T16’ one does random 4K accesses with the identical queue configuration, however from a number of threads. The ‘Seq1M’ traces use a 1MiB block measurement. The plain ‘Rnd4K’ one makes use of solely a single queue and single thread . Evaluating the ‘4K Q32T16’ and ‘4K Q1T1’ numbers can shortly inform us whether or not the storage gadget helps NCQ (native command queuing) / UASP (USB-attached SCSI protocol). If the numbers for the 2 entry traces are in the identical ballpark, NCQ / UASP is just not supported. This assumes that the host port / drivers on the PC help UASP.

CrystalDiskMark Benchmarks
TOP: Samsung MUF-256DA 256GBKingston XS2000 500GBKingston DT Max 1TB	BOTTOM: Kingston XS2000 500GBKingston DT Max 1TBSamsung MUF-256DA 256GB

Sadly, the Samsung MUF-256DA acts as a vanilla UFD with no help for NCQ or UASP, Nevertheless, the numbers seen right here for every workload is considerably larger than what was seen for the Mushkin Atom or Strontium Nitro Plus Nano. The reads do not fairly attain 400 MBps, however writes at 100 MBps+ evaluate fairly favorably towards the 2 thumbnail-sized contenders. Whereas these screenshots usually are not within the above drop-down, they are often considered from the linked evaluations (the Strontium Nitro Plus Nano is available in at 140 MBps reads / 51 MBps writes and the Mushkin Atom at 191 MBps reads / 26 MBps writes in the very best case workloads).

Benchmarking for Efficiency Consistency

Our testing methodology for storage bridges / direct-attached storage models takes into consideration the standard use-case for such units. The most typical utilization state of affairs is switch of enormous quantities of pictures and movies to and from the unit. Different utilization situations embody using the unit as a obtain or set up location for video games and importing information instantly from it right into a multimedia enhancing program resembling Adobe Photoshop. Some customers might even decide as well an OS off an exterior storage gadget.

The AnandTech DAS Suite tackles the primary use-case. The analysis includes processing 5 completely different workloads, out of which the primary 4 had been processed on the Samsung MUF256-DA:

• AV: Multimedia content material with audio and video information totalling 24.03 GB over 1263 information in 109 sub-folders
• Dwelling: Photographs and doc information totalling 18.86 GB over 7627 information in 382 sub-folders
• BR: Blu-ray folder construction totalling 23.09 GB over 111 information in 10 sub-folders
• ISOs: OS set up information (ISOs) totalling 28.61 GB over 4 information in a single folder
• Disk-to-Disk: Addition of 223.32 GB unfold over 171 information in 29 sub-folders to the above 4 workloads (complete of 317.91 GB over 9176 information in 535 sub-folders)

Apart from the ‘Disk-to-Disk’ workload, every information set is first positioned in a 29GB RAM drive, and a robocopy command is difficulty to switch it to the exterior storage unit (formatted in exFAT for flash-based models such because the Samsung MUF-256DA being reviewed at the moment, and NTFS for HDD-based models).

robocopy /NP /MIR /NFL /J /NDL /MT:32 $SRC_PATH $DEST_PATH

Upon completion of the switch (write take a look at), the contents from the unit are learn again into the RAM drive (learn take a look at) after a ten second idling interval. This course of is repeated thrice for every workload. Learn and write speeds, in addition to the time taken to finish every go are recorded. At any time when potential, the temperature of the exterior storage gadget is recorded throughout the idling intervals – the Samsung MUF-256DA does not help temperature read-outs, although. Bandwidth for every information set is computed as the typical of all three passes.

The ‘Disk-to-Disk’ workload includes an identical course of, however with one iteration solely. The information is copied to the exterior unit from the CPU-attached NVMe drive, after which copied again to the inner drive. It does embody extra quantity of steady information switch in a single route, as information that does not match within the RAM drive can also be a part of the workload set. Since this wasn’t processed on the MUF-256DA resulting from capability points (needing a minimum of 318GB of free area), the numbers similar to these workloads are graphed as 0 beneath.

Audio and Video LearnAudio and Video WriteBlu-ray Folder LearnBlu-ray Folder WriteDisk-to-Disk LearnDisk-to-Disk WriteISOs LearnISOs WritePhotographs and Paperwork LearnPhotographs and Paperwork WriteIncrease All

As anticipated, the UFD does not set any efficiency data, however delivers higher outcomes than these in its similar measurement class (Mushkin Atom / Strontium Nitro Plus Nano). We additionally instrumented our analysis scheme for figuring out efficiency consistency.

Efficiency Consistency

Features influencing the efficiency consistency embody SLC caching and thermal throttling / firmware caps on entry charges to keep away from overheating. That is vital for energy customers, as the very last thing that they need to see when copying over 100s of GB of information is the switch price happening to USB 2.0 speeds.

Along with monitoring the instantaneous learn and write speeds of the DAS when processing the AnandTech DAS Suite, the temperature of the drive can also be recorded throughout the idling intervals. For models that don’t help this, the temperature is recorded as 0. The graphs beneath current the recorded information.

AnandTech DAS Suite – Efficiency Consistency
TOP: Samsung MUF-256DA 256GBKingston XS2000 500GBKingston DT Max 1TB	BOTTOM: Kingston XS2000 500GBKingston DT Max 1TBSamsung MUF-256DA 256GB

The primary three units of writes and reads correspond to the AV suite. A small hole (for the switch of the video suite from the inner SSD to the RAM drive) is adopted by three units for the Dwelling suite. One other small RAM-drive switch hole is adopted by three units for the Blu-ray folder. That is adopted up with the large-sized ISO information set. Lastly, we have now the only disk-to-disk switch set. Not like the comparability merchandise, the Samsung MUF-256DA manages to ship vital efficiency consistency. The write speeds are stored near 100 MBps even for small-sized information.

PCMark 10 Storage Bench – Actual-World Entry Traces

There are a variety of storage benchmarks that may topic a tool to synthetic entry traces by various the combo of reads and writes, the entry block sizes, and the queue depth / variety of excellent information requests. We noticed outcomes from two well-liked ones – ATTO, and CrystalDiskMark – in a earlier part. Extra severe benchmarks, nevertheless, truly replicate entry traces from real-world workloads to find out the suitability of a selected gadget for a selected workload. Actual-world entry traces could also be used for simulating the conduct of computing actions which are restricted by storage efficiency. Examples embody booting an working system or loading a selected sport from the disk.

PCMark 10’s storage bench (launched in v2.1.2153) consists of 4 storage benchmarks that use related real-world traces from well-liked functions and customary duties to completely take a look at the efficiency of the most recent trendy drives:

• The Full System Drive Benchmark makes use of a wide-ranging set of real-world traces from well-liked functions and customary duties to completely take a look at the efficiency of the quickest trendy drives. It includes a complete of 204 GB of write visitors.
• The Fast System Drive Benchmark is a shorter take a look at with a smaller set of much less demanding real-world traces. It topics the gadget to 23 GB of writes.
• The Knowledge Drive Benchmark is designed to check drives which are used for storing information reasonably than functions. These usually embody NAS drives, USB sticks, reminiscence playing cards, and different exterior storage units. The gadget is subjected to fifteen GB of writes.
• The Drive Efficiency Consistency Take a look at is a long-running and very demanding take a look at with a heavy, steady load for professional customers. In-depth reporting exhibits how the efficiency of the drive varies below completely different situations. This writes greater than 23 TB of information to the drive.

Regardless of the info drive benchmark showing most fitted for testing direct-attached storage, we decide to run the complete system drive benchmark as a part of our analysis circulation. Many people use moveable flash drives as boot drives and storage for Steam video games. A lot of these use-cases are addressed solely within the full system drive benchmark.

The Full System Drive Benchmark includes of 23 completely different traces. For the aim of presenting outcomes, we classify them below 5 completely different classes:

• Boot: Replay of storage entry hint recorded whereas booting Home windows 10
• Artistic: Replay of storage entry traces recorded throughout the begin up and utilization of Adobe functions resembling Acrobat, After Results, Illustrator, Premiere Professional, Lightroom, and Photoshop.
• Workplace: Replay of storage entry traces recorded throughout the utilization of Microsoft Workplace functions resembling Excel and Powerpoint.
• Gaming: Replay of storage entry traces recorded throughout the begin up of video games resembling Battlefield V, Name of Responsibility Black Ops 4, and Overwatch.
• File Transfers: Replay of storage entry traces (Write-Solely, Learn-Write, and Learn-Solely) recorded throughout the switch of information resembling ISOs and pictures.

PCMark 10 additionally generates an total rating, bandwidth, and common latency quantity for fast comparability of various drives. The sub-sections in the remainder of the web page reference the entry traces specified within the PCMark 10 Technical Information.

Booting Home windows 10

The read-write bandwidth recorded for every drive within the boo entry hint is offered beneath.

Home windows 10 BootIncrease All

Being restricted by the dimensions and interface velocity, the Home windows 10 booting bandwidth involves round 30 MBps – undoubtedly higher than conventional arduous disks, however not adequate to match entry-level moveable SSDs.

Artistic Workloads

The read-write bandwidth recorded for every drive within the sacr, saft, sill, spre, slig, sps, aft, exc, ailing, ind, psh, and psl entry traces are offered beneath.

Startup – Adobe AcrobatStartup – Adobe After ResultsStartup – Adobe IllustratorStartup – Adobe LightroomStartup – Adobe PhotoshopStartup – Adobe Premiere ProfessionalUtilization – Adobe After ResultsUtilization – Adobe IllustratorUtilization – Adobe InDesignUtilization – Adobe Photoshop HeavyUtilization – Adobe Photoshop MildIncrease All

Regardless of its restricted capability and upstream interface, the bandwidth numbers recorded for the inventive workloads nearly match the low-end XS2000 moveable SSD on the 500GB capability level. Nevertheless, it goes with out saying that moveable SSDs are most popular to UFDs for these sorts of workloads.

Workplace Workloads

The read-write bandwidth recorded for every drive within the exc and pow entry traces are offered beneath.

Utilization – Microsoft ExcelUtilization – Microsoft PowerpointIncrease All

The numbers usually are not favorable to the UFD, with the pow entry hint displaying an enormous efficiency deficit in comparison with the exc workload.

Gaming Workloads

The read-write bandwidth recorded for every drive within the bf, cod, and ow entry traces are offered beneath.

Startup – Battlefield VStartup – Name of Responsibility Black Ops 4Startup – OverwatchIncrease All

UFDs are ill-suited for loading up video games, and the numbers above verify the identical. Even entry-level moveable SSDs and high-end thumb drives just like the Kingston DT Max can present 3x to 4x the efficiency – all at the price of compactness and value.

Recordsdata Switch Workloads

The read-write bandwidth recorded for every drive within the cp1, cp2, cp3, cps1, cps2, and cps3 entry traces are offered beneath.

Duplicating ISOs (Learn-Write)Duplicating Photographs (Learn-Write)Exporting ISOs (Write-Solely)Exporting Photographs (Write-Solely)Importing ISOs (Learn-Solely)Importing Photographs (Learn-Solely)Increase All

The Recordsdata Switch workloads are the place the Samsung MUF-256DA springs a shock. It typically surpasses the 500GB model of the Kingston XS2000 in a number of parts. Given the worth and measurement of the UFD, and the truth that these are meant to be the first use-case for the gadget, it’s commendable.

Total Scores

PCMark 10 experiences an total rating based mostly on the noticed bandwidth and entry instances for the complete workload set. The rating, bandwidth, and common entry latency for every of the drives are offered beneath.

Full System Drive Benchmark Bandwidth (MBps)Full System Drive Benchmark Latency (us)Full System Drive Benchmark RatingIncrease All

UFDs with native flash controllers and restricted channel rely are sometimes hampered by way of potential to ship excessive bandwidth and decrease latency. This sub-section confirmed the Samsung MUF-256DA performing properly in its meant use-cases, however the total rating is pulled low resulting from its conduct in gaming and inventive workloads.

Miscellaneous Features and Concluding Remarks

The efficiency of the storage bridges / drives in numerous real-world entry traces in addition to artificial workloads was introduced out within the previous sections. We additionally regarded on the efficiency consistency for these instances. Energy customers might also be concerned with efficiency consistency below worst-case situations, in addition to drive energy consumption. The latter can also be vital when used with battery powered units resembling notebooks and smartphones. Pricing can also be an vital side. We analyze every of those intimately beneath.

Worst-Case Efficiency Consistency

Flash-based storage units are inclined to decelerate in unpredictable methods when topic to numerous small-sized random writes. Many benchmarks use that scheme to pre-condition units previous to the precise testing as a way to get a worst-case consultant quantity. Luckily, such workloads are unusual for direct-attached storage units, the place workloads are largely sequential in nature. Use of SLC caching in addition to firmware caps to forestall overheating might trigger drop in write speeds when a flash-based DAS gadget is topic to sustained sequential writes.

Our Sequential Writes Efficiency Consistency Take a look at configures the gadget as a uncooked bodily disk (after deleting configured volumes). A fio workload is about as much as write sequential information to the uncooked drive with a block measurement of 128K and iodepth of 32 to cowl 90% of the drive capability. The inner temperature is recorded (if supported) at both finish of the workload, whereas the instantaneous write information price and cumulative complete write information quantity are recorded at 1-second intervals.

Sequential Writes to 90% Capability – Efficiency Consistency
TOP: Samsung MUF-256DA 256GBKingston XS2000 500GBKingston DT Max 1TB	BOTTOM: Kingston XS2000 500GBKingston DT Max 1TBSamsung MUF-256DA 256GB

UFDs and entry-level moveable SSDs are sometimes victims of the SLC caching cliff state of affairs. They begin off with excessive switch speeds, however drop right down to direct-to-TLC speeds after the cache runs out. The issue may be seen in each the Kingston DT Max and XS2000 samples above. Beneath sustained load, the DT Max 1TB variant drops right down to round 50 MBps, whereas the XS2000 500GB fares barely worse than that (in all probability restricted by variety of parallel flash cube too). Distinction that with the efficiency of the Samsung MUF-256DA : Whereas the highest velocity is proscribed to round 100 MBps, the UFD manages to maintain it round that mark by way of sustained loading for nearly the entire capability of the drive.

Energy Consumption

Bus-powered units can configure themselves to function inside the energy supply constraints of the host port. Whereas Thunderbolt ports are assured to provide as much as 15W for shopper units, USB 2.0 ports are assured to ship solely 4.5W (900mA @ 5V). On this context, it’s attention-grabbing to have a fine-grained have a look at the ability consumption profile of the varied exterior drives. Utilizing the Plugable USBC-TKEY, the bus energy consumption of the drives was tracked whereas processing the CrystalDiskMark workloads (separated by 5s intervals). The graphs beneath plot the instantaneous bus energy consumption towards time, whereas singling out the utmost and minimal energy consumption numbers.

CrystalDiskMark Workloads – Energy Consumption
TOP: Samsung MUF-256DA 256GBKingston XS2000 500GBKingston DT Max 1TB	BOTTOM: Kingston XS2000 500GBKingston DT Max 1TBSamsung MUF-256DA 256GB

Absolutely the energy numbers are the bottom for the Samsung MUF-256DA, as anticipated (the capability / variety of flash cube is decrease, and the speeds are additionally restricted by the USB 3.2 Gen 1 interface). The height is available in at 1.66W (in comparison with 3.26W for the XS2000 and three.05W for the DT Max). Nevertheless, one side we want to see the MUF-256DA enhance upon is the power to go to a deep sleep state. Each the Kingston drives can drop right down to sub-1mW after idling for round 20 minutes, however the Samsung UFD retains draining round 0.4W all through.

Concluding Remarks

The fast developments in flash know-how have made moveable SSDs into an enormous product class over the previous couple of years. These developments have additionally not left the ever-present UFD (USB flash drive) behind. Whereas native USB 3.2 Gen 2×2 flash controllers have enabled blistering speeds in high-end UFDs such because the Kingston DT Max just lately, Samsung’s MUF-256DA USB Kind-C Flash Drive has additionally proven that there’s a worth proposition in delivering a compact UFD that displays efficiency consistency with out breaking the financial institution. To attain this, Samsung has stored the BOM price low by getting in for the legacy 5 Gbps interface (USB 3.2 Gen 1) and limiting write speeds to round 100 MBps. This has additionally allowed the thermal design some leeway.

The Samsung MUF sequence of USB Kind-C flash drives is available in three capacities – 64GB (MSRP of $13, road value of $12), 128GB (MSRP of $23, road value of $23), and 256GB (MSRP of $40, road value of $40). The Kind-C port and compact nature enable the UFD for use seamlessly with any trendy Kind-C-equipped smartphone or pill supporting OTG storage (permitting the UFD to enter a deep sleep state after a little bit of idling would have made it much more engaging). The Kingston DT Max is an alternate with higher marketed efficiency numbers on the 256GB capability level. Nevertheless, its construct is flimsier and it isn’t as rugged because the Samsung MUF sequence in relation to withstanding put on and tear from frequent use. From a pricing viewpoint, the Kingston DT Max 256GB is available in at $47. For the worth premium and the bigger bodily footprint, the DT Max offers a lot larger burst efficiency. Nevertheless, the Samsung wrests again the benefit in situations the place efficiency consistency below sustained load is vital. It’s uncommon for a compact UFD to ship on that premise, however that’s precisely what Samsung has finished with the solidly-built MUF sequence.