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Rekordna 2011. za Intel
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Corsair Nova V128 - SSD za poželjeti
17.06.2010.
    « Prev  : Stranica 1 od 3 :  Next »      By ::  Krešimir Matanović 
- Opis, test sistem i način testiranja -
Opis

Disk sa Indilinx kontrolerom još nismo imali prilike testirati pa je zapravo ovaj test bio dugo isčekivan jer smo o tim kontrolerima čuli samo dobre stvari. Inače, uz Nova seriju, Corsair ima i Performance seriju sa Samsungovim kontrolerom, Force seriju sa poznatim SandForce SF-1200 kontrolerom, Reactor seriju sa JMicron kontrolerom te Extreme seriju sa Indilinx Barefoot kontolerom. Ponuda im je dakle vrlo široka, od najjeftinijih i najpristupačnijih pa sve do SSD-a sa visokim performansama i visokom cijenom - za svakoga ponešto. Nova serija spada među skuplje i brže, a uređaji dolaze pakirani u malene kutije nenapadnog dizajna koje na sebi pružaju tek osnovne informacije o proizvodu. Tako s nje saznajemo i puno ime ovoga proizvoda - CSSD-V128GB2-BRKT. Uz uređaj (koji je dodatno zaštićen u plastičnom omotaču) u kutiji nalazimo i adapter za montažu u 3.5" ležišta te odgovarajuće vijke.

Kućište uređaja je aluminijsko, obojanu je u crnu boju, a naljepnica crno bijele kombinacije nudi samo one najosnovnije informacije. Kućište je dimenzija 99.8 x 69.63 x 9.3 mm, a masa mu je 80 grama. Radni napon je 5V, a maksimalna potrošnja elektirčne energije u radu iznosi 2W (0.5W u standby-u). Nosač koji dolazi u paketu je čelični a također je obojan u crnu boju. Četiri priložena vijka služe za pričvršćivanje diska za nosač, a druga četiri nosača za kućište. Sučelje diska je standardno SATA II brzine do 3.0Gb/s. Nova serija nudi diskove kapaciteta od 32GB, 64GB, 128GB i 256GB, a proizvođač deklarira brzinu rada od 270MB/s za sekvencijalno čitanje te 195MB/s za sekvencijalni zapis podataka. Disk je otporan na udarce do sile od 40G, MTBF (Mean time between failures) je preko 1 milijun radnih sati, a proizvođačeva garancija iznosi 3 godine.

Kao što smo spomenuli srce ovoga uređaja je Indilinx Barefoot kontroler koji podržava TRIM funkciju ili naredbu. O njoj smo pisali ranije, a nije na odmet spomenuti kako je vrlo bitna kod SSD-a, jer oni pate od problema koji se zove Write Amplification. NAND memorija ima tendenciju da blok podataka briše tek kada na njega treba ponovno pisati. Zbog toga se dugotrajnom upotrebom skuplja velika količina "smeća" a performanse diska drastično opadaju. Sa operativnim sistemom i diskom koji podržava TRIM naredbu taj efekt se uvelike smanjuje. Ukoliko OS daje naredbu brisanja podataka on automatski šalje i TRIM naredbu kontroleru diska da to i fizički napravi. Za ovaj su disk korišteni Intelovi (Micronovi) 34nm MLC NAND memorijski čipovi kapaciteta 8GB (16 x 8GB = 128GB). Znamo kako zapis malih blokova podataka zna stvoriti usko grlo kod diskova, a tu u pomoć dolazi priručna memorija u obliku SDRAM čipa. U ovaj se disk tako ugrađuje Elpidina EDS51321DBH-6DTS-F memorija kapaciteta 64MB i brzine 166MHz. Toliko o fizičkim karakteristikama uređaja i vrijeme je da otkrijemo kako to sve radi u praksi.

 

Test sistem:

Test sistem :: Hardware
Platforme

DFI UT X58-T3eH8

Procesor(i)

Intel Core i7-920

Memorija

3x 2GB DDR3 Kingmax 1600 MHz

Grafičke kartice

Gigabyte HD5870 SOC;

Driveri: Catalyst 10.5

Zvučna kartica

On Board

Hard disk(ovi)

Corsair Nova V128GB;

Kingston M 80GB;

G.Skill FM-25S2S-128GBT1;

G.Skill FM-25S2-128GB;

Napajanje Antec TruePower Quattro 850W
DVD-RW HP GSA-H60L

Testni sistem :: Software
OS Windows 7 Ultimate 64-bit
Chipset datoteke

Intel 9.1.0.1008

DirectX verzija 11
I/O Meter 2006.07.27
AS SSD v. 1.5.3753
Lavalys Everest Ultimate Edition v.5.30.1900

 

Način testiranja

Test stroj je naš uobičajeni Core i7 setup, a kontroler na kojem smo testirali disk je ICH10R. Disk je testiran u AHCI načinu rada i sa Microsoft Storage driverima (MSAHCI). To je bilo nužno jer TRIM i NCQ rade isključivo u AHCI modu. Bitno je za napomenuti kako smo dugotrajnijim procesom testirali i TRIM funkciju, a pri tome smo podesili nekoliko opcija za svakodnevni rad. Kao prvo u operativnom smo sistemu pogasili indeksiranje, defragmentaciju te Prefetch i Superfetch funkcije. Nakon toga smo upisivanjem naredbe "fsutil behavior query DisableDeleteNotify" u Command Prompt saznali je li TRIM uključen (vrijednost mora biti 0) i započeli sa intenzivnim korištenjem uređaja (često pisanje/brisanje/pisanje). Za usporedbu smo imali Kingstonov disk sa Intelovim kontrolerom te jeftinija SSD rješanja iz G.Skilla bazirana na JMicronovoj tehnologiji. Za test su korišteni Everest, I/O Meter i AS SSD testovi. Sa I/O Meter aplikacijom smo simulirali smo dvije različite situacije u radu, nasumičnu i sekvencijalnu, pri čemu je Queue Depth bio postavljen na 20, sa 67% vremena provedenog u čitanju podataka i 33% u zapisu. AS SSD smo koristili kako bi saznali je li došlo do degradacije performansi nakon dugotrajnog korištenja diska. Kapacitet diska nakon formatiranja u NTFS je 119,24GB.



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