The SSD Thread V3, The Speed You Need
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 Oct 10 2012, 03:20 AM
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#1
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Junior Member
67 posts Joined: Oct 2012 From: Selangor 
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Put me on the list :0
Corsair Force Series 3 120GB x 2 One installed in Macbook, one installed in desktop. So far so good. haven't spot any instability issue. Just the Sata speed issue in Macbook. ><" i'm not advertising har.... Dont think too much ~.~ This post has been edited by TechBay: Oct 10 2012, 03:23 AM |
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Oct 10 2012, 09:44 AM
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#2
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Junior Member
67 posts Joined: Oct 2012 From: Selangor
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QUOTE(ic-klass @ Oct 10 2012, 09:32 AM) What do uou mean by SATA issue in macbook? Not sure other SSD having any issue for it. Any particukar model? Planning to up to SSD on my mbp soon...  Mine is Corsair Force Series 3 120GB. Many of them get an issue about the Negotiated Sata Speed only run at 1.5Gb instead of 3Gb. I saw some feedback from users that Crucial SSD m4 resolved the issue, but for safety try to search around for that. Cause it was few months ago, and i don't really bother and forget about it already. >< Added on October 10, 2012, 9:45 amBut the stability still there. So far the SSD is running well only the Sata Speed sometimes will be 3Gb sometimes drop to 1.5Gb. -.-" This post has been edited by TechBay: Oct 10 2012, 09:47 AM |
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Oct 15 2012, 06:01 PM
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#3
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Junior Member
67 posts Joined: Oct 2012 From: Selangor
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I wanna to share the overall graph of NAND technology, for more clear&easy understanding picture about the NAND Tech that previously storm88 bring in.
Graph - NAND Tech SLC- Single Layer Cell High performance Lower power consumption Faster write speeds 100,000 program/erase cycles per cell Higher cost A good fit for industrial grade devices, embedded systems, critical applications. MLC- Multi Layer Cell Lower endurance limit than SLC 10,000 program/erase cycles per cell Lower cost A good fit for consumer products. Not suggested for applications which require frequent update of data. TLC- Three Layer Cell Higher density Lower endurance limit than MLC and SLC TLC has slower read and write speeds than conventional MLC 5,000 program/erase cycles per cell Best price point A good fit for low-end basic products. Not suggested for critical or important applications at this time which require frequent updating of data. This post has been edited by TechBay: Oct 15 2012, 06:05 PM |
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Oct 15 2012, 06:38 PM
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#4
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Junior Member
67 posts Joined: Oct 2012 From: Selangor
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QUOTE(ic-klass @ Oct 15 2012, 06:21 PM) So TLC is no good?!. It is not count as not good, it is a new technology and not ready for us as it haven't mature. Many reviews said that TLC is not reliable for long period of use. And there are at least 95% of SSD are using MLC. Still safe. Which SSD used it? However, Samsung 840 is using TLC tech and "they claims to have improved its NAND fabrication and controller algorithm to the point where its TLC-based 840 are more reliable than many MLC SSDs on the market" Source: Samsung TLC claims MLC Performance This post has been edited by TechBay: Oct 15 2012, 06:42 PM |
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Oct 16 2012, 02:58 AM
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#5
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Junior Member
67 posts Joined: Oct 2012 From: Selangor
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QUOTE(everling @ Oct 16 2012, 01:14 AM) It's Triple-Level Cell. Correct that 25nm MLC i providing 3k p/e cycles. Due to Samsung ahead to 21nm TLC NAND, the p/e is reducing to 1k.And at one time, 25nm MLCs had a lifespan of only 3,000 program/erase cycles. With 5,000 p/e cycles, TLC is well ahead of when 25nm NAND was first introduced. As for lifespan, the numbers can be deceiving. Assuming that you consume 5 p/e for the entire SSD per day you are looking at 2.74 years of life. For a 256GB SSD, this means writing 256GB of data every day for 2.74 years. Since most people would struggle to write 50GB a day, most will do just fine. For samsung 840 256GB assuming one year used 36,500GB / years end up using 143p/e out of 1,000. Roughly can hold for 7 years. And Samsung 840 128GB, can hold up to 3.5 years in estimation. And Samsung didn't offer 60/64GB of 840 series? This may due to the SSD unable to hold up to 3 years under the warranty they're providing. After all, Samsung admitted that write-erase endurance is lower than MLC, but not revealing about the lifespan. And about the Samsung 840 Pro, it is using 21nm MLC toggle-NAND with disclosure of P/E and claimed 50% faster than TLC Nand. Believed that Samsung 840 Pro will be a great stuff in SSD market but still have to wait for the real environment test. This post has been edited by TechBay: Oct 16 2012, 03:01 AM |
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Oct 16 2012, 09:13 AM
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#6
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Junior Member
67 posts Joined: Oct 2012 From: Selangor
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QUOTE(storm88 @ Oct 16 2012, 08:56 AM) On general, 840 might works slower, but from the info i got, 840 might will be in good price staging. However i wasn't being quote an accurate price yet. Yea, of coz 840 will get a good price. The reason using TLC is because it can save the cost compare with MLC. But lifespan is quite true to verify with the time. anyhow, the product need time to "Certify" if it really work lesser lifespan or so on:) Actually no offense for this, just wanna to share.  |
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