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Better off researching other manufacturers, imo.
Well, there's Seagate and then ... uh ... oh. Right.
Nobody else. Been paying attention much?
The "other manufacturers" are models manufactured under WD & Seagate and marketed under their old names for brand name recognition. There's been no competition with the Caviar Black line in desktop systems for about the last four years, and nothing emerging currently.
And, as far as "researching," you might consider that the posts in this thread already summarize the current state of the industry. Some of
have "bothered to check," both regularly and recently. In some cases on a weekly basis for the past several years.
For a reliability in an OS drive, there's the WD Black sitting in a class by itself.
Maybe you don't place much value on your data, but that's your personal choice. The price premium is (and has been) about 50% for at least three years. Quite often it is far under 50%, sometimes only about 20% if you shop carefully. I can't remember beyond that, and it's an irrelevant comparison outside of that timeframe anyway due to manufacturing & technology changes sine 2009.
For example, a 1 TB Blue drive generally goes for about $100 currently, while a Black edition goes for about $120, outside of unusual deals. Before the flooding in Thailand last year, it was about $80 & $100 respectively. I bought a pair of 750 GB SATA III Blacks last August, one for $59 and the other for $49, and was considering the 2 TB version at about $130 even missed a special deal for $120 once. Just a couple weeks ago I could have had a 2 TB Black for $150, although the standard price is usually about $170-$180 these days.
There is no 2 TB Blue edition for comparison, 2 TB green drives go for ~$130, I've seen special deals as low as ~$115. The VelociRaptor drives aren't part of this discussion due to their extreme performance and price. The Green editions & other "Eco" drives really aren't, either, since it's pure stupid to use them as OS drives.
There's no other brand/model that has a 5 year warranty and is designed as a main OS drive. Period. No other brand/model has reviews even close to the reliability of a WD Black in these price ranges. Period.
Feel free to name something specific, though, instead of general hearsay & assertion. I'm certainly in the market and would love to see another option.
[
EDIT:
how long Blue going to last? let say in a non stop PC with a constant 40+°C? because my Blue died last week (bought it last year)...
You get what you pay for. I've avoided Blue drives because the reviews on them gave me no confidence. They used to have a 3 year warranty; you need to check your purchase agreement. After only one year, it's probably still under warranty, unless WD changed it. ]