Samsung sm951 nvme 256gb review


The Samsung SM951 M.2 is a high-performance, low-powered PCIe SSD that is designed for use in both ultra-sllặng notebook PCs and workstations. The SM951 is very similar khổng lồ the HPhường Z Turbo drive sầu that we reviewed inside the HP.. Z620 in both specifications và performance, which offered twice the performance of standard high-performance SSDs all at a similar price tag. Since this impressive sầu debut, consumers have sầu been asking for this drive to hit the market, so the recent release of Samsung SM951 M.2 PCIe SSD is a huge giảm giá for many, including here at That being said, consumers will have to lớn pay a premium if they want khổng lồ reap the benefits of this impressive drive sầu. To avoid confusion, we are reviewing the AHCI version of the SM951 not the soon to be released NVMe version.

Bạn đang xem: Samsung sm951 nvme 256gb review

The Samsung SM951 M.2 is a high-performance, low-powered PCIe SSD that is designed for use in both ultra-slim notebook PCs và workstations. The SM951 is very similar khổng lồ the HPhường Z Turbo drive that we reviewed inside the HP.. Z620 in both specifications & performance, which offered twice the performance of standard high-performance SSDs all at a similar price tag. Since this impressive debut, consumers have been asking for this drive sầu khổng lồ hit the market, so the recent release of Samsung SM951 M.2 PCIe SSD is a huge giảm giá for many, including here at StorageĐánh Giá. That being said, consumers will have sầu to pay a premium if they want lớn reap the benefits of this impressive sầu drive. To avoid confusion, we are reviewing the AHCI version of the SM951 not the soon khổng lồ be released NVMe version.


The SM951’s tiny M.2 khung factor (which is comprised of 80mm x 22mm or roughly one-seventh the size of a standard 2.5″ SSD) makes for an igiảm giá solution inside space constrained applications lượt thích laptops. This results in more space for other vital components, such as batteries, in small system platforms. Additionally, though the SM951 M.2 SSD weighs only six grams, it comes in capacities up to lớn 512GB, which certainly makes it a viable upgrade option for numerous use cases and applications.

Though the Samsung SM951 may be a very small storage device, it is specced as a considerable performer & is equipped with End-to-End Data Protection. Using a PCIe 2.0 interface, the Samsung drive is quoted lớn reach speeds up to 1,600MB/s in reads & 1,350MB/s in writes as well as random performance of 130,000 IOPS read và 85,000 IOPS write; this makes it approximately 30% faster than its predecessor, the XP941. When using a PCIe 3.0 interface, Samsung quotes even faster performance, setting maximum sequential read performance at a whopping 2,150MB/s và sequential writes at 1,500 MB/s. In addition, the company claims random 4KB reads can reach 90,000 IOPS with writes maxing out at 70,000 IOPS using PCIe 3.0. Nevertheless, there are a lot of factors that can affect PCIe performance, all of which depend on the computer itself (i.e. the components inside it) và system settings, so some users may have trouble replicating these quoted speeds. Samsung also indicates that it is compatible with most motherboards và notebooks with a M.2 PCIe interface slot; however, the SM951 line is not designed lớn work with the MacBook, MacBook Air, or MacBook Pro.

The Samsung SM951 M.2 comes in capacities of 256GB và 512GB, which are priced at $260 & $460, respectively. All drives come with a 3-year warranty. We will be looking at the 512GB unit for this Đánh Giá.

Samsung SM951 M.2 Specifications

Capacities: 512GB, 256GB, 128GBController: Samsung UBX 3-CoreFlash: Samsung 16nm MLCForm Factor: M.2 2280 M-Key PCIe 3.0 x4Sequential Read: 2,150MB/s, 2,150MB/s, 2,050MB/sSequential Write: 1,500 MB/s, 1,200 MB/s, 600MB/s4K Random Read: 90,000 IOPS4K Random Write: 70,000 IOPSActive sầu Power: 6.5WIdle Power: 50mWL1.2 Power: 2mWSupport: Standard AHCI driver, APM và L1.2 Power Saving Mode, End-to-End Data Protection, Supports TRIM Commvà, RoHS Compliant, Halogen-Free CompliantWarranty: 3-year Warranty

Design và Build

Samsung SM951 M.2 SSD is just a fraction of the form size of a 2.5 inch SSD, measuring in at only 80mm x 22milimet. As is the case with all devices of this type, the SM951 does not have sầu a casing, leaving its components exposed. Users should thus be cautious when transporting or installing any M.2 drives.


The front side is branded with a sticker that partially covers the NAND chips all the while displaying various information about the drive. The side opposite of the connectors has an M key notch, which denotes a specific use of the M.2 module; in this case, it indicates PCIe x4 and SATA compatibility.

The other side of the M.2 drive is home page khổng lồ the NAND packages. all capacities use the Samsung UBX 3-Chip Core controller và Samsung 16nm MLC NAND.

Consumer Synthetic Benchmarks

All consumer SSD benchmarks are conducted with the HP Z6trăng tròn Workstation.

In our first chạy thử, we measured 2MB sequential performance from Samsung SM951. Here, the drive posted an impressive 1,729.2MB/s read and 1497.9MB/s write.


In our next kiểm tra, which looks at 2MB random transfer performance, the Samsung SM951 recorded impressive sầu results once again with read & write activity that measured 1337.6MB/s & 1,080.9MB/s, respectively.


Moving lớn smaller 4k random transfers (throughput), the Samsung SM951 posted 9,800.2 IOPS for read activity & 34,836.6 IOPS for write activity. As was expected, the Samsung 850 EVO drives posted similar results.


Our next benchmark measured the Samsung SM951 drives in MB/s. In this demo, the 512GB drive sầu boasted read & write performance of 38.28MB/s and 136.08MB/s, respectively.


When looking at average write latency, the SM951 posted fantastic results again with an impressive sầu average response time and peak latency at 0.0283ms và 2.825ms, respectively.


Our next kiểm tra shifts to lớn a 4K random workload with 100% write activity that scales from 1QD to lớn 64QD. Under this scenario, the Samsung SM951 512GB measured 34,681.1 IOPS lớn 74,246.83 IOPS (The Samsung SSD 850 EVO m.2 500GB outperformed it handedly).


Moving lớn read activity, the Samsung SM951 512GB recorded a range of 9,795.05 IOPS at QD1 while peaking at 110,726.191 IOPS in the terminal queue depths.

Xem thêm: Top Những Game Trên Máy Thùng Hay Nhất Mọi Thời Đại, Lưu Trữ Game Thùng


Our last series of synthetic benchmarks compare the hard drives in a series of hệ thống mixed-workloads with a queue depth of ranging from 1 to 128. Each of our server protệp tin tests has a strong preference towards read activity, ranging from 67% read with our database protệp tin khổng lồ 100% read in our web server profile.

The first is our database profile, which consists of a 67% read và 33% write workload phối primarily centered on 8K transfer sizes. In this trace, the Samsung SM951 512GB measured a range from 10,487.67 IOPS khổng lồ an impressive 74,027.97 IOPS in the terminal queue depths.


The next protệp tin looks at a webVPS, with 80% read & 20% write workload spread out over multiple transfer sizes ranging from 512-byte to 64KB. The Samsung SM951 boasted a burst throughput of 8,409.341103 IOPS và 77,429.19 IOPS in 128QD.


Our file server protệp tin is read-only with a spread of transfer sizes from 512-byte lớn 512KB. The Samsung SM951 showed a QD1 of 9,579.74 IOPS và a QD128 of 67,415.13 IOPS.


The last protệp tin looks at workstation activity, with a 20% write và 80% read mixture using 8K transfers. Here, the SM951 offered a range of 9,627.26 IOPS to lớn 82,166.95 IOPS.


Consumer Real-World Benchmarks

For the average consumer, trying to translate random 4K write speeds inlớn an everyday situation is pretty difficult. It helps when comparing drives in every setting possible, but it doesn’t exactly work out inlớn faster everyday usage or better game loading times. For this reason we turned to lớn our StorageMark 2010 traces, which include HTPC, Productivity, & Gaming traces to help readers find out how a drive sầu might rank under these conditions.

The first real-life chạy thử is our HTPC scenario. In this test we include: playing one 720P HD movie in Media Player Classic, one 480P. SD movie playing in VLC, three movies downloading simultaneously through iTunes, và one 1080i HDTV stream being recorded through Windows Media Center over a 15 minute period. Higher IOps & MB/s rates with lower latency times are preferred. In this trace we recorded 2,986MB being written khổng lồ the drive và 1,924MB being read.

In our HTPC profile, the SM951 posted a blistering average tốc độ of 1,221.29MB/s, 26,291 IOPS & 0.296ms in average latency.


Our second real-life demo covers disk activity in a productivity scenario. For all intents and purposes, this kiểm tra shows drive performance under normal daily activity for most users. This demo includes: a three hour period operating in an office productivity environment with 32-bit Vista running Outlook 2007 connected khổng lồ an Exchange hệ thống, website browsing using Chrome & IE8, editing files within Office 2007, viewing PDFs in Adobe Reader, và an hour of local music playbachồng with two hours of additional online music via Pandora. In this trace we recorded 4,830MB being written khổng lồ the drive & 2,758MB being read.

In our Productivity trace, the results told a similar story with the SM951 registering 29,515 IOPS, 941.56MB/s, và 0.253ms in average latency.


Our third real-life demo covers disk activity in a gaming environment. Unlượt thích the HTPC or Productivity trace, this one relies heavily on the read performance of a drive. To give sầu a simple breakdown of read/write percentages, the HTPC kiểm tra is 64% write, 36% read, the Productivity demo is 59% write & 41% read, while the gaming trace is 6% write & 94% read. The test consists of a Windows 7 Ultimate 64-bit system pre-configured with Steam, with Grvà Theft Aulớn 4, Left 4 Dead 2, và Mass Effect 2 already downloaded and installed. The trace captures the heavy read activity of each game loading from the start, as well as textures as the game progresses. In this trace we recorded 426MB being written lớn the drive và 7,235MB being read.

In our read-intensive Gaming trace, the Samsung SM951 posted an impressive sầu 1,458.62MB/s, 29,995.25 IOPS, và an average latency of only 0.225ms.



The Samsung SM951 M.2 PCIe SSD is a serious performer, as the much anticipated drive showed us that it was capable of boasting some tremendous throughput during our tests. The drive sầu is also comprised of a decent capathành phố form size with upwards of 512GB in storage, though it would have sầu been nice khổng lồ see a 1TB mã sản phẩm. In addition, the SM951 is equipped with the Samsung UBX 3-Core controller và 16nm NAND, all of which is packed inside the tiny M.2 form factor that weighs a mere six grams. As such, power users looking khổng lồ nâng cấp their ultra-slim notebook PCs và workstations will certainly find a lot to love with Samsung’s new overachieving drive sầu, as it will be a huge tăng cấp in virtually every scenario.

As far as performance specifics go, the SM951 posted fantastic results overall during our consumer synthetic & real-world benchmarks. When looking at our 2MB sequential & random transfer tests, the SM951 posted a blistering 1,729.2MB/s read & 1497.9MB/s write, and 1,337.6MB/s read & 1,080.9MB/s write, respectively. When we put it through our smaller 4k random transfers benchmarks, the Samsung SM951 posted 9,800.2 OPS for read activity and 34,836.6 IOPS for write activity, while reaching 38.28MB/s read and 136.08MB/s write. These results were on par with its brethren, the Samsung 850 EVO M.2. Things really picked up during our VPS mixed-workloads (with a queue depth of ranging from 1 to 128), where the SM951 boasted speeds that were some of the fastest we’ve sầu ever seen for a consumer drive sầu. These results were mirrored during our real-world benchmarks, which was highlighted by our gaming trace’s bar-setting 1,458.62MB/s and 29,995.25 IOPS (6% write và 94% read).

Samsung has unquestionably tightened its grip on the small form-factor SSD industry even more with the release of the SM951 and because there is a very limited selection on the M.2 SSD market (particularly with the PCIe 3.0 interface), having such a unique option readily available is very exciting for enthusiasts & consumers looking for ultra-high performance. There is no doubt that the SM951 is one of the fasdemo performing M.2 drive on the market; however, it does come at a pretty penny at roughly twice the cost of the Samsung 850 EVO M.2. That being said, many users will find that it’s a price they are willing to lớn pay in order to lớn have sầu the best drive sầu possible inside their ultra-thin device.

Xem thêm: Bảng Ngọc Tái Tổ Hợp - Lol Cập Nhật Phiên Bản 10


Much faster than most SATA based drivesTiny form factorMultiple interfaces lớn tư vấn different platforms (NVMe và AHCI)


No 1TB Mã Sản Phẩm yetCosts a little more than 2.5″ SATA drives

Bottom Line

Though the Samsung SM951 comes at a higher cost than 2.5” SATA SSDs, it provides much more performance, much lower power consumption, all within its tiny size factor.

Chuyên mục: Tin Tức