Samsung SSD 850 Pro 256GB test

U našoj se dugogodišnjoj praksi testiranja SSD-a nikada nije našao i jedan Samsungov model. Ima više faktora zašto je tome tako, no eto sada ćemo ispraviti tu nepravdu. Jedan od naših forumaša nam je posudio svoj primjerak SSD 850 Pro diska koji dolazi u kapacitetu od 256GB, a diči se i desetgodišnjim jamstvom što je svakako veliki mamac za kupovinu. Samsung je vrlo jak igrač na polju SSD-a i na tržištu su prisutni već niz godina s kompletno vlastitim rješenjima. Imaju in-house proizvodnju i NAND-a i kontrolera. S tehnološke strane ovo je prvi disk koji koristi tzv. 3D NAND a o tome ćemo nešto kasnije. isto tako treba napomenuti kako je 850 PRO serija već gotovo godinu dana dostupna na tržištu.

Uz SSD dolaze i jamstveni listić, upute za instalaciju, medij sa softverom i manualima, a tu su i dvije naljepnice za računalo kako bi svi vidjeli koji SSD se nalazi u vašem PC-u. Sam je disk dobro zaštićen u plastičnom ležištu, a on sam dobro podnosi i sve mehaničke manipulacije.

850PRO dolazi kao nasljednik 830 i 840 diskova te svih njihovih verzija. Direktan je to zapravo nasljednik 840 EVO modela s kojim dijeli isti trojezgreni MEX kontroler, te SATA III sučelje. Drugačiji je naravno 3D NAND ili V-NAND kako ga Samsung naziva (V zbog Vertical). NAND je na oko 19-20 nm proizvodnom procesu došao do fizičkog limita smanjenja procesa i svi su aktivno tražili način povećanja gustoće i smanjenja troškova proizvodnje uz zadržavanje viših proizvodnih procesa. Rješenje se nametnulo samo po sebi -  slagati NAND ćelije (u suštini tranzistore) jedne na druge pa otud i dolazi 3D naziv zbog te vertikalne komponente. Samsung svoj NAND proizvodi u 40nm proizvodnom procesu sa 32 sloja ćelija složenih jedne na drugu. U ova se disk sada ugrađuje već druga generacija MLC V-NAND čipova gustoće 86 Gbita.

850 PRO dolazi u četiri izvedbe - 128GB, 256GB, 512GB i 1TB, a mi smo na testu imali onu najpopularniju od 256GB. O kapacitetu ovisi i količina priručne (buffer) DRAM (LPDDR2) memorije koja se nalazi na disku. Najmanji model ima 256GB, srednja dva 512MB a najveći čak 1GB. Ove količine memorije su potrebne zbog načina rada MEX kontrolera. Svi diskovi imaju iste performanse sekvencijalnog čitanja - 550 MB/s, najmanji ima sekvencijalni zapis od 470 MB/s a svi ostali 520 MB/s. Kada su u pitanju 4K performanse svi modeli imaju 100K IOPS-a nasumičnog čitanja, te 90K IOPS-a nasumičnog zapisa. Diskovi podržavaju AES-256 te  TCG Opal 2.0 & IEEE-1667 enkripciju. Proizvođač navodi izdržljivost za sve diskove od 150TB zapisa, a daje garanciju od deset godina. Potrošnja električne energije iznosi 2mW u mirovanju (DevSLP), 3.3W pri čitanju te 3W pri zapisu. Over provisioning za sve diskove je tvorničkih 7.6%, jer svaki NAND čip ima kapacitet od 10.75GB, pa je kod ovog modela ukupan kapacitet 258 GB.

S diskom dolazi i vrlo kompleksna i korisna Magician aplikacija koja nudi osnovne informacije o disku, benchmark performansi, optimizaciju performansi uz pomoć TRIM-a, zatim nadogradnju firmwarea, optimizaciju operativnog sistema, tj. prilagođavanje rada istog po potrebama SSD-a. To uključuje četiri načina rada - maksimalne performanse, maksimalni kapacitet, maksimalna pouzdanost i napredno podešavanje gdje o opcijama kao što su hibernacija, virtualna memorije, indexing, prefetch/superfetch, write cache buffer itd. odlučujemo sami.

Zatim tu nalazimo menadžment Overprovisioning prostora na disku što nam može povećati dugotrajnost ali i donijeti konzistentnije performanse. Tu je i Secure Erase funkcija za trenutačno "uništavanje" svih podataka na disku. Za kraj, tu su i dvije napredne opcije - RAPID mod i Data Security. RAPID mod ubrzava performanse cjelokupnog sistema. Druga je to generacija ove značajke koja sada donosi podršku za adresiranje još više radne memorije i donosi poboljšani algoritam za keširanje podataka. Posljednja opcija je sigurnost podataka koja nam na jednostavan način omogućuje tri stupnja sigurnosti - Class 0, TCG Opal i enkripciju. Samsung je s ovom aplikacijom otišao najdalje od svih proizvođača SSD-a i korisniku ponudio vrlo moćan alat.

Test sistem:

Test sistem :: Hardware Platforme Gigabyte X99-Gaming G1 Procesor(i) Intel i7-5820K Memorija G.Skill DDR4 3000MHz 4 x 4GB Grafičke kartice AMD Radeon R9 295X2 Zvučna kartica On Board SSD Samsung SSD 850 PRO 256GB Napajanje SuperFlower Leadex Platinum 100W Monitor Dell UltraSharp U2713HM

 

Testni sistem :: Software OS Windows 8.1 Chipset datoteke Intel Chipset Driver 10.0.20 DirectX verzija 11 Intel I/O Meter 2006.07.27/1.1 Beta ATTO Disk Benchmark v.2.47 AIDA64 Engeneer Edition, v.5.0

 

Način testiranja

Disk smo testirali na Gigabyteovoj X99-gaming G1 ploči s Intelovim i7-5820K procesorom, ali smo testove napravili i na starom X79 sistemu i utvrdili kako performanse odstupaju za manje od 1%. Prilikom testiranja je disk radio u AHCI načinu rada i s Microsoft Storage driverima (MSAHCI), što su im dodijelili Windowsi 8.1. Uz sve standardne testove koje provodimo tu je i simulacija četiriju situacija uz pomoć I/O Metera - Database sa 67% čitanja i 33% zapisa, Workstation sa 80% čitanja i 20% zapisa, Web Servera sa 100% čitanja i File Servera sa 80% čitanja i 20% zapisa, nakon čega ispisujemo broj izmjerenih IOPS-a. Uz to, kao i kod OCZ diskova, napravili smo i Sustained Performance 12 satni test kako bi utvrdili ponašanje performansi tijekom vremena. Savjeti za svakodnevnu operativu SSD-a pod Windows OS-om uključuju isključivanje stvari kao što su indeksiranje diska, zatim isključivanje prefetcha i Superfetcha te defragmentiranja koje je sasvim nepotrebno.

PCMark8 [ichart headers="ID,MB/s" htitle="Storage Bandwidth (MB/s)"  labels="Crucial MX100 512GB, Intel DC S3500 480GB,Samsung 850 PRO 256GB,OCZ Vertex 460 240G.B,OCZ RevoDrive 350 480GB,Corsair Force LX 256GB, OCZ Vector 150 120GB,OCZ Vertex 450 256GB,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,OCZ Vertex 4 256GB,takeMS UTX-PO318 120GB,Corsair Force 3 128GB" values="292.62,284.67,277.38,256.21,239.17,234.02,216.28,214.05,213.50,205.35,198.68,180.66,123.9" colors="blue,blue,orange,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="300"] PCMark performanse su vrlo solidne i pri vrhu su poretka. AIDA64 Read [ichart headers="ID,MB/s" htitle="Linear Read (MB/s)"  labels="Asus Hyper Express 256GB,OCZ Vector 256GB,OCZ Vector 150 120GB,Corsair Force LX 256GB,Samsung 850 PRO 256GB,takeMS UTX-PO318,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,Patriot Blaze 240GB, Intel DC S3500 480GB,Intel SSD 730 240GB,OCZ Vector 180 960GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,OCZ Vertex 450 256GB,Intel SSD335 240GB,Crucial MX100 512GB,Patriot Pyro 240GB" values="644.1,540.7,540.7,539.8,539.8,526.7,526.1,525.8,525.56,523.23,520.96,512.3,464.3,402.1,384.7,377.56,356.6,313.93" colors="blue,blue,blue,blue,orange,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="700"] [ichart headers="ID,MB/s" htitle="Random Read (MB/s)"  labels="OCZ Vector 150 120GB,Asus Hyper Express 256GB,AMD Radeon R7 SSD 240GB,Intel SSD 730 240GB,takeMS UTX-PO318,Samsung 850 PRO 256GB,OCZ Vector 256GB,Corsair Force LX 256GB,OCZ ARC 100 240 GB,Patriot Blaze 240GB,Intel DC S3500 480GB,OCZ Vector 180 960GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,OCZ Vertex 450 256GB,Intel SSD335 240GB,Crucial MX100 512GB,Patriot Pyro 240GB" values="698.5,674.8,604.7,603.2,592.9,584.7,570.2,560.9,547.1,545.8,535.7,509.4,491.2,420.8,397.9,392.6,356.4,345.4" colors="blue,blue,blue,blue,blue,orange,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="700"] [ichart headers="ID,ms" htitle="Average Read Access (ms)"  labels="OCZ Vector 256GB,OCZ Vector 150 120GB,Corsair Force LX 256GB,Intel DC S3500 480GB,Intel SSD 730 240GB,takeMS UTX-PO318,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,Patriot Blaze 240GB,OCZ Vertex 450 256GB,OCZ Vector 180 960GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,Samsung 850 PRO 256GB,Crucial MX100 512GB,Intel SSD335 240GB,Patriot Pyro 240GB,Asus Hyper Express 256GB" values="0.02,0.02,0.03,0.03,0.03,0.03,0.04,0.04,0.04,0.08,0.08,0.10,0.11,0.11,0.12,0.17,0.21,0.25" colors="blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,orange,blue,blue,blue,blue" height="400", min="0" max="0.25"] AIDA64 testovi čitanja su u skladu s onim što proizvođač reklamira, uz tek nešto više vrijeme pristupa. AIDA64 Write [ichart headers="ID,MB/s" htitle="Linear Write (MB/s)"  labels="OCZ Vector 180 960GB,Samsung 850 PRO 256GB,Crucial MX100 512GB,Asus Hyper Express 256GB,Intel DC S3500 480GB,AMD Radeon R7 SSD 240GB,OCZ Vertex 460 240GB,OCZ Vector 256GB,OCZ ARC 100 240 GB,Patriot Blaze 240GB,Corsair Force LX 256GB,OCZ Vector 150 120GB,Intel SSD 730 240GB,OCZ Vertex 450 256GB,OCZ Vector 180 240GB,Intel SSD335 240GB,takeMS UTX-PO318,Patriot Pyro 240GB" values="525.5,487.3,485.1,451.4,430.9,366.5,362.9,353,314.3,308.8,290.7,285.5,273.8,259.6,249.2,225.2,198.5,150.1" colors="blue,red,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="550"] [ichart headers="ID,MB/s" htitle="Random Write (MB/s)"  labels="OCZ Vector 180 240GB,OCZ Vertex 460 240GB,OCZ Vector 256GB,Samsung 850 PRO 256GB,OCZ Vector 180 960GB,Intel DC S3500 480GB,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,Patriot Blaze 240GB,OCZ Vertex 450 256GB,Crucial MX100 512GB,Intel SSD 730 240GB,Corsair Force LX 256GB,takeMS UTX-PO318,OCZ Vector 150 120GB,Intel SSD335 240GB,Patriot Pyro 240GB,Asus Hyper Express 256GB" values="397.6,396.5,395.6,376.6,373.8,343.6,329.3,310.2,298.4,296.6,284.9,280.7,252.4,219,201.4,168.6,104,100.2" colors="blue,blue,blue,red,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="400"] [ichart headers="ID,ms" htitle="Average Write Access (ms)"  labels="Intel DC S3500 480GB,Intel SSD 730 240GB,OCZ Vector 150 120GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,OCZ Vector 180 960GB,OCZ Vertex 450 256GB,Samsung 850 PRO 256GB,Crucial MX100 512GB,Corsair Force LX 256GB,Asus Hyper Express 256GB,OCZ Vector 256GB,Intel SSD335 240GB,Patriot Pyro 240GB,Patriot Blaze 240GB,takeMS UTX-PO318" values="0.03,0.04,0.04,0.04,0.04,0.05,0.05,0.05,0.05,0.06,0.08,0.15,0.28,0.3,0.36,0.56,1.32,2.12" colors="blue,blue,blue,blue,blue,blue,blue,blue,blue,red,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="2.2"] I performanse zapisa su odlične, a vrijeme pristupa ne odstupa značajnije od konkurencije.

ATTO Disk Benchmark [ichart headers="ID,MB/s" htitle="Read 4kb"  labels="Patriot Blaze 240GB,OCZ Vector 150 120GB,OCZ Vector 180 240GB,OCZ Vector 256GB,OCZ Vector 180 960GB,OCZ Vertex 460 240GB,Corsair Force LX 256GB,Samsung 850 PRO 256GB,OCZ ARC 100 240 GB,Intel SSD 730 240GB,Patriot Pyro 240GB,takeMS UTX-PO318,Intel DC S3500 480GB,OCZ Vertex 450 256GB,Crucial MX100 512GB,AMD Radeon R7 SSD 240GB,Intel SSD335 240GB,ASUS Hyper Express 256GB" values="358.4,316.648,311.296,308.224,299.080,288.768,267.264,266.240,259.477,248.832,242.688,239.018,232.889,224.718,211.439,201.728,110.041,95.777" colors="blue,blue,blue,blue,blue,blue,blue,red,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="360"] [ichart headers="ID,MB/s" htitle="Write 4kb"  labels="Patriot Blaze 240GB,takeMS UTX-PO318,OCZ Vector 180 960GB,Patriot Pyro 240GB,OCZ Vector 180 240GB,Intel SSD 730 240GB,OCZ Vertex 460 240GB,Intel DC S3500 480GB,OCZ Vector 256GB,Samsung 850 PRO 256GB,Corsair Force LX 256GB,OCZ ARC 100 240 GB,Crucial MX100 512GB,OCZ Vector 150 120GB,AMD Radeon R7 SSD 240GB,OCZ Vertex 450 256GB,ASUS Hyper Express 256GB,Intel SSD335 240GB" values="344.064,339.12,331.776,328.704,293.888,285.696,270.336,264.192,259.424,248.832,247.808,243.104,208.896,195.548,182.838,181.635,118.784,96.015" colors="blue,blue,blue,blue,blue,blue,blue,blue,blue,orange,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="350"] [ichart headers="ID,MB/s" htitle="Read 512kb"  labels="OCZ Vector 150 120GB,OCZ Vector 256GB,Samsung 850 PRO 256GB,Corsair Force LX 256GB,Crucial MX100 512GB,takeMS UTX-PO318,OCZ Vector 180 240GB,OCZ Vector 180 960GB,Intel SSD 730 240GB,Patriot Blaze 240GB,OCZ Vertex 460 240GB,AMD Radeon R7 SSD 240GB,Patriot Pyro 240GB,Intel DC S3500 480GB,OCZ ARC 100 240 GB,OCZ Vertex 450 256GB,Intel SSD335 240GB,ASUS Hyper Express 256GB" values="562.478,561.296,561.296,558.948,558.751,557.781,554.871,554.310,554.309,553.161,550.880,547.494,528.936,502.914,487.709,404.075,399.457,230.963" colors="blue,blue,red,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="600"] [ichart headers="ID,MB/s" htitle="Write 512kb"  labels="ASUS Hyper Express 256GB,takeMS UTX-PO318,OCZ Vertex 460 240GB,Samsung 850 PRO 256GB,OCZ Vector 180 240GB,Patriot Blaze 240GB,OCZ Vector 180 960GB,AMD Radeon R7 SSD 240GB,Crucial MX100 512GB,Patriot Pyro 240GB,Intel DC S3500 480GB,OCZ ARC 100 240 GB,OCZ Vector 256GB,Intel SSD335 240GB,OCZ Vertex 450 256GB,Corsair Force LX 256GB,Intel SSD 730 240GB,OCZ Vector 150 120GB" values="723.09,535.532,532.874,530.243,530.242,528.936,527.637,522.980,511.500,510.255,477.711,430.626,417.759,388.361,369.216,306.153,290.196,195.265" colors="blue,blue,blue,red,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="730"] 4K performanse su u sredini poretka, no zato 512K performanse zakucavaju u sam limit SATA III kontrolera. I/O Meter Mixed Workload [ichart headers="ID,IOPS" htitle="IOPS Combined"  labels="OCZ Vector 180 240GB @ Database,Samsung 850 PRO 256GB @ Database,OCZ Vector 180 240GB 256GB @ FileServer,Samsung 850 PRO 256GB @ FileServer,OCZ Vector 180 240GB @ Workstation,Samsung 850 PRO 256GB @ Workstation,OCZ Vector 180 240GB @ WebServer,Samsung 850 PRO 256GB @ WebServer" values="40756.563,2166.884,23468.88,2319.089,35718.521,3353.067,28257.461,7922.939" colors="green,red,green,red,green,red,green,red" height="400", min="0" max="53000"] Rezultati miješanih testova, tj. simulacija četiri načina rada u serverskom okruženju su poprilično slabi za ovog Samsunga i tu je OCZ-ov kontroler nadmoćniji.

IOMeter (100% Sequential) [ichart headers="ID,IOPS" htitle="Total I/O per second"  labels="Patriot Pyro 240GB,Intel SSD335 240GB,OCZ ARC 100 240 GB,OCZ Vertex 450 256GB,Corsair Force LX 256GB,OCZ Vector 180 960GB,OCZ Vertex 460 240GB,Patriot Blaze 240GB,OCZ Vector 256GB,OCZ Vector 180 240GB,OCZ Vector 150 120GB,AMD Radeon R7 SSD 240GB,takeMS UTX-PO318,Intel SSD 730 240GB,Samsung 850 PRO 256GB,Intel DC S3500,Crucial MX100 512GB,ASUS Hyper Express 256GB" values="69735.62,31488.38,29143.67,22619.5,21536.75,19543.10,16280.48,15564.75,15024.29,12712.75,11842.07,11499.85,10953.99,8074.68,7784.826,4362.89,2558.40,1827.96" colors="purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,green,purple,purple,purple" height="400", min="0" max="70000"] [ichart headers="ID,MB/s" htitle="Total MB per second"  labels="Patriot Pyro 240GB,Intel SSD335 240GB,OCZ ARC 100 240 GB,OCZ Vertex 450 256GB,Corsair Force LX 256GB,OCZ Vector 180 960GB,OCZ Vertex 460 240GB,Patriot Blaze 240GB,OCZ Vector 256GB,OCZ Vector 180 240GB,AMD Radeon R7 SSD 240GB,OCZ Vector 150 120GB,takeMS UTX-PO318,Intel SSD 730 240GB,Samsung 850 PRO 256GB,Intel DC S3500,Crucial MX100 512GB,ASUS Hyper Express 256GB" values="142.82,61.5,59.69,44.18,44.11,40.2,33.34,31.88,29.34,26.04,23.55,23.13,22.43,16.54,15.24,8.52,5.24,3.74" colors="purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,green,purple,purple,purple" height="400", min="0" max="150"] [ichart headers="ID,milisecond" htitle="Maximum I/O Response time (ms)"  labels="Patriot Blaze 240GB,Intel SSD335 240GB,Intel SSD 730 240GB,Samsung 850 PRO 256GB,OCZ Vector 256GB,Intel DC S3500 480GB,Patriot Pyro 240GB,OCZ Vector 150 120GB,Crucial MX100 512GB,takeMS UTX-PO318,OCZ Vertex 450 256GB,AMD Radeon R7 SSD 240GB,Corsair Force LX 256GB,OCZ Vector 180 240GB,OCZ ARC 100 240 GB,OCZ Vector 180 960GB,ASUS Hyper Express 256GB" values="10.422,22.0971,26.4292,31.300,35.325,36.7278,47.76,235.3631,256.978,258.9182,266.9978,615.7187,740.43,793.9076,826.606,2720.2522,5372.0625" colors="purple,purple,purple,green,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple" height="400", min="0" max="5400"] Sekvencijalne performanse su na dnu poretka, no tu je i Intelov SSD 730, a nisu daleko ni Vectori.   IOMeter (100% Random) [ichart headers="ID,IOPS" htitle="Total I/O per second"  labels="OCZ ARC 100 240 GB,OCZ Vertex 450 256GB,OCZ Vector 180 960GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,AMD Radeon R7 SSD 240GB,Intel DC S3500 480GB,Patriot Pyro 240GB,OCZ Vector 150 120GB,Intel SSD 730 240GB,Intel SSD335 240GB,OCZ Vector 256GB,Patriot Blaze 240GB,Samsung 850 PRO 256GB,Crucial MX100 512GB,Corsair Force LX 256GB,takeMS UTX-PO318,ASUS Hyper Express 256GB" values="50952.59,34849.68,32559.70,30640.01,29942.11,22810.03,21482.09,21095.49,21021.24,20058.88,17700.45,15847.96,13442.98,12324.53,11732.34,9161.18,7232.83,963.96" colors="purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,yellow,purple,purple,purple,purple" height="400", min="0" max="51000"] [ichart headers="ID,MB/s" htitle="Total MB per second"  labels="OCZ ARC 100 240 GB,OCZ Vertex 450 256GB,OCZ Vector 180 960GB,OCZ Vector 180 240GB,OCZ Vertex 460 240GB,AMD Radeon R7 SSD 240GB,Patriot Pyro 240GB,Intel DC S3500 480GB,Intel SSD 730 240GB,OCZ Vector 150 120GB,Intel SSD335 240GB,OCZ Vector 256GB,Patriot Blaze 240GB,Samsung 850 PRO 256GB,Crucial MX100 512MB,Corsair Force LX 256GB,takeMS UTX-PO318,ASUS Hyper Express 256GB" values="104.35,68.07,66.68,62.75,51.08,46.71,43.2,41.96,41.08,41.06,34.57,30.95,27.53,25.24,24.03,18.7,14.81,1.97" colors="purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,yellow,purple,purple,purple,purple" height="400", min="0" max="105"] [ichart headers="ID,milisecond" htitle="Maximum I/O Response time (ms)"  labels="Intel DC S3500 480GB,Intel SSD 730 240GB,Samsung 850 PRO 256GB,Patriot Pyro 240GB,Intel SSD335 240GB,Crucial MX100 512GB,OCZ Vector 150 120GB,Corsair Force LX 256GB,OCZ Vertex 460 240GB,OCZ Vector 256GB,OCZ Vertex 450 256GB,takeMS UTX-PO318,AMD Radeon R7 SSD 240GB,OCZ ARC 100 240 GB,OCZ Vector 180 240GB,Patriot Blaze 240GB,OCZ Vector 180 960GB,ASUS Hyper Express 256GB" values="6.2752,13.920,30.033,71.93,85.6501,101.1356,233.246,266.986,344.7431,345.4264,618.4861,620.4432,738.43,794.447,832.787,894.7,2721.024,2917.8303" colors="purple,purple,yellow,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple,purple" height="400", min="0" max="3000"] Nasumične su I/O performanse ipak dosta slabije od konkurencije. IOMeter Sustained Performance [ichart headers="ID,IOPS" htitle="Sustained Performance (IOPS)"  labels="850 PRO 256GB @ 5 min.,850 PRO 256GB @ 15 min.,850 PRO 256GB @ 60 min.,850 PRO 256GB @ 120 min.,850 PRO 256GB @ 240 min.,850 PRO 256GB @ 480 min.,850 PRO 256GB @ 720 min.," values="86201.824,52384.060,18917.623,11723.245,8158.998,6716.068,6600.534" colors="blue,blue,blue,blue,blue,blue,blue" height="400", min="0" max="90000"] Sustained performanse u trajanju od 12 sati su dosta niže od onoga što bilježe OCZ-ovi diskovi (Vector 180, ARC 100, Vertex 460), no i jednom kada se ustabile tu i ostaju.

Znamo kako Samsung već dugi niz godina proizvodi dobre SSD-e no iz različitih se razloga nismo dohvatili testa njihovih popularnih modela. Sada konačno ispravljamo tu pogrešku zahvaljujući našem forumašu mbed-u, a u međuvremenu se i naš uvoznik malo aktivirao pa su nam poslali i 850 EVO model čija će recenzija izaći za koji tjedan. Što reći o 850 PRO modelu? Riječ je svakako o iznimno brzom disku koji nas je jedino razočarao u onim testovima u kojima OCZ briljira, a to su IOPS performanse u četiri različita okruženja, kao i Sustained IOPS performanse. Jasno je kako je ovaj proizvod više namijenjen kućnom korisniku koji će cijeniti njegovu brzinu ali i visoku deklariranu izdržljivost. Na hrvatskom je tržištu ovaj disk moguće kupiti po cijeni od 1.300 do 1.400 kuna, što ga čini konkurentnim s OCZ-ovim Vector 180 240GB diskom. Laganu prednost zbog izvrsnih IOPS performansi ipak dajemo OCZ-u, ali vjerujemo kako će 850 PRO velik broj kupaca privući upravo deset godišnjim jamstvom. OCZ je s novim SSD Guru softverom pokušao parirati Samsungovom Magicianu koji je i dalje bolje i kompletnije rješenje.