Reddit mentions of ADATA SU655 480GB 3D NAND 2.5 inch SATA III High Speed Read up to 520MB/s Internal SSD (ASU655SS-480GT-C)

Per CamelCamelCamel, it has been this price since introduction (around Oct 6) from ADATA/3rd party.

https://camelcamelcamel.com/ADATA-SU760-512GB-Internal-ASU760SS-512GT-C/product/B07TDW86SQ

/u/NewMaxx hasn't put it in their list just yet, since the exact differences are unclear (although iirc, some of the +5 model numbers seem to be Amazon-specific labels and possibly what this is).

https://www.reddit.com/r/buildapcsales/comments/d694p9/ssd_adata_su760_512gb_3d_nand_25_inch_sata_iii_47/

This is on my short list for a modest Steam storage drive on my old PC... that or the $50 SU655/650 / $45 SU635/630 which are known dram-less and TLC or QLC, respectively.

Because of the 5$ shipping, I think the SU655 is a better buy at 66$ tax-free. TLC and SLC cache.

Or you can add a DRAM cache as well for 4 more $ with the SU800

Firstly, there's a major difference between being DOA and working for a matter of weeks before failing. The latter is tremendously worse, as anyone without a backup solution has lost all of their data.

Secondly, any hardware manufacturer is capable of some DOA devices. That does not mean Samsung and Adata drives have comparable endurances -- you need to consider the statistics of the distribution, as a whole. We can do a quick analysis with a much larger sample size than your personal experience of owning a single Adata SSD and a single Samsung SSD:

• Here is the Amazon link for the Samsung EVO 860. It has 33 critical reviews containing the word "fail". Out of 4,372 total reviews, this is 0.75%.
  
  
• Here is the Amazon link for the Adata SU655 -- the same drive that failed for the redditor in the comment I linked. It has 20 critical reviews containing the word "fail". Out of 310 total reviews, this is 6.5% -- about one order of magnitude larger.
  
  Obviously, this is not a thorough, extensive analysis, and probably does not reflect the actual, absolute failure rates for these devices. But it's probably first-order accurate as a comparison and hopefully you get the point.

Woke up to my 2015 4K iMac displaying a solid white folder icon with a question mark (It wasn't blinking). I immediately held down the power button on the rear of the machine to force shut it down.

After I powered on the machine, I was presented with a Kernel Panic error message, as seen above. Shortly after, the message vanished, and the machine proceeded to boot into macOS Catalina normally.

This machine has been upgraded from its stock 1 Terabyte 5400RPM Hard Drive to a 480 Gigabyte ADATA SU655 SSD.

I know that the white folder icon with the question mark is an indication of drive failure. I've been using Time Machine since the birth of this computer.

How do I locate the Kernel Panic logs? Once I find them, how do I interpret them? Thank you.

Price History

• ADATA SU800 512GB 3D-NAND 2.5 Inch SATA III High Speed   ^PureLink
  ReviewMeta: ★★★★✮ 4.4/5 from 1105 valid reviews
  CamelCamelCamel - [Info] │ Keepa - [Info]
  
• ADATA SU655 480GB 3D NAND 2.5 inch SATA III High   ^PureLink
  ReviewMeta: ★★★★☆ 3.9/5 from 419 valid reviews
  CamelCamelCamel - [Info] │ Keepa - [Info]
  
  _
  Price Chess > Price Checkers
  ^(Info) ^| ^(Developer) ^| ^(Inquiries) ^| ^(Support Me!) ^| **[^(Report Bug)](/message/compose?to=The_White_Light&subject=Bug+Report&message=%2Fr%2Fbapcsalescanada%2Fcomments%2Fdusolu%2Fssd_team_group_gx2_25_512gb_sataiii%2Ff780uc3%2F%0D%0A%0D%0A%0D%0A%0D%0APlease+explain+here+what+you+expected+to+happen%2Fwhat+went+wrong.)**

Yeah i feel you, my friend just literally bought a new SSD because of this. On the other hand, /r/buildapcsales generally has a bunch of links to cheap SSDs, there's one on there from amazon right now for like 480gb/$50

https://www.amazon.com/dp/B07DNKKGP8/ref=gbps_img_s-5_5baf_27000124?smid=A2UXO5LPTDY3LN&pf_rd_p=a7e1c818-e7bc-4318-ae47-1f5300505baf&pf_rd_s=slot-5&pf_rd_t=701&pf_rd_i=gb_main&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=KAVRP7QN1P2F3QXW1EMP&th=1

Type|Amazon|3rd Party New

---|:---|:---
Lowest|N/A|$72.99 on Sep 04, 2018
Highest|N/A|$79.99 on Jun 27, 2018

3C link

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> SSDs also have more space than you have access to for maintenance and caching (ex. Replacing data on a completely "full" SSD still works because the controller can read the bits it wants to write over, store it in the cache that's unavailable to you

Is this why I see "500" GB SSD actually only has 480GB usable capacity for me to store stuff?

So is Adata being more honest by putting down 480GB as the storage capacity rather than Samsung's 500GB? Or is the Adata drive even less at 460 GB usable capacity?

Going back to what you said about the QLC. So Quad (4x) layer cells in terms of durability < TLC < SLC?

> Most drives are T(riple)LC, the super high end ones are M(ulti aka two, because marketing)LC.

So does MLC fit in between TLC and SLC where it looks like QLC < TLC < MLC < SLC?

Thanks. I've learned a lot from you.

I would personally not get a SSD under 480GB. You put a few games on a 240 and you are pushing it already. You will end up having to upgrade sooner rather than later and now you are wasting a spot on a tiny drive. I would go with this one.

https://www.amazon.com/ADATA-SU655-Internal-ASU655SS-480GT-C-Version/dp/B07DNKKGP8/ref=sr_1_4?s=pc&ie=UTF8&qid=1537976551&sr=1-4&keywords=adata+ssd

and then this for your additional sotrage

https://www.amazon.com/Seagate-BarraCuda-Cache-Desktop-ST2000DM006/dp/B01IEKG402/ref=sr_1_7?s=electronics&ie=UTF8&qid=1537976727&sr=1-7&keywords=toshiba+2tb