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This review is from: WD Black WD4003FZEX 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
Pros: Fast for a non-SSD. Higher capacity/performance for a good price. Have two other WD Caviar Black drives that have held up real well for over a couple years. Hoping this one will too.
Other Thoughts: Benchmark tested using Samsung's SSD Magician Utility software on Intel chipset SATAII controller
Sequential Read: 159MB/s
Sequential Write: 150MB/s
Random Read (IOPS): 1222
Random Write (IOPS): 903
Pros: I was having problems with BIOS sometimes not detecting the 850 EVO drive during boot up.
Problem was that I had the drive plugged into my secondary SATA3.0 6Bb/s Marvell 88SE9128 controller. It runs of the South Bridge and not directly off the Intel chipset. The slight delay in initializing the Marvell controller during boot causes bios to not see the SDD in time to boot off of it. Doesn't always happen but often enough.
Set your BIOS configuration to AHCI and not IDE or you'll have problems in the long run with drive efficiency degrading.
Cons: None at all! :)READ FULL REVIEW
Pros: Super fast and not too expensive. When I enabled the RAPID mode in the provided Samsung Magician utility the Benchmark speeds went off the chart.
Sequential read/write 3189/2776 MB/s
Random read/write (IOPS) 103823/65541
Night and day difference from my old HDD (WD1002FAEX)
Cons: At random, it is not get recognized by BIOS during initial boot up. It could be caused by my motherboard's BIOS or some other issue. Not sure yet. However, it usually works again after rebooting.
The provided Samsung Data Migration software is worthless. After cloning Windows 7 from my old HDD to the new SSD, Windows was blue screening and freezing up all the time.
I ended up doing a clean install of Windows 8.1 and haven't had one problem.
Other Thoughts: Samsung Data Migration software - USELESS GARBAGE
Samsung Magician utility - Good
Make sure your drivers are installed and updated as well as the motherboard's BIOS
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