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HDD failing? (MacBook...sorry lol) - Page 3

post #21 of 23
Quote:
Originally Posted by CynicalUnicorn View Post

I did not recommend the 840 and EVO because they're TLC drives. Each cell holds three bits and they wear out a bit faster than MLC, the standard two bits per cell. However, if you're averaging under 10 GB of writes a day, they should be fine for the better part of the decade, but if you're installing programs every day and copying a new movie library once a week, you have been warned.

Keep in mind, the bigger the drive you get, the higher the number of total terabytes you can write, also.

At a conservative minimum of 1,000 P/E cycles:
120 GB: 120 TBW
250 GB: 250 TBW
500 GB: 500 TBW
1 TB: 1 PBW

At 10GB host writes per day with 3x write amplification (30GB NAND writes per day)
120 GB: ~11 years
250 GB: ~22.8 years
500 GB: ~45.7 years
1 TB: ~91.3 years

At 100GB NAND writes per day
120 GB: ~3.3 years
250 GB: ~6.8 years
500 GB: ~13.7 years
1 TB: ~27.4 years
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post #22 of 23
http://www.newegg.com/Product/Product.aspx?Item=N82E16820147248

This is probably the perfect combination of price/performance right now. largest capacity for the price (under 200).
post #23 of 23
Thread Starter 
Quote:
Originally Posted by rui-no-onna View Post

Keep in mind, the bigger the drive you get, the higher the number of total terabytes you can write, also.

At a conservative minimum of 1,000 P/E cycles:
120 GB: 120 TBW
250 GB: 250 TBW
500 GB: 500 TBW
1 TB: 1 PBW

At 10GB host writes per day with 3x write amplification (30GB NAND writes per day)
120 GB: ~11 years
250 GB: ~22.8 years
500 GB: ~45.7 years
1 TB: ~91.3 years

At 100GB NAND writes per day
120 GB: ~3.3 years
250 GB: ~6.8 years
500 GB: ~13.7 years
1 TB: ~27.4 years

This laptop isn't used for a whole lot anymore. Just as an alternate computer that I can take with me anywhere. My desktop is what I use when I do most of my work: document editing, programming and coding for research, gaming, etc. The Macbook is really just used for surfing the web when I'm sitting on the couch, downloading music, and downloading pictures from my camera, but no major media like videos. Nowadays, I download maybe 20 new songs a month and probably average at 50 photos a month. So my big usages will probably be Google Chrome (which is probably the worst of the browsers out there for having significant writes), Dropbox syncs, and Google Drive syncs.

I would say that there will never be a day that I'll have over 100GB WPD, but I will probably average a little over 10GB of WPD due to the amount that Google Chrome is used on that computer. Honestly, if I still have this computer for another 6 years, I'll probably be getting ready for a replacement by then simply because of how outdated mine will be at that point. So I think I'll be going for the 250GB EVO. Right now on Newegg the EVO is only $6 more than the standard once shipping is considered. I see no reason I shouldn't do that.
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