Samsung 840 EVO read speed drops on old-written data in the drive - Page 265 - Overclock.net - An Overclocking Community

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Samsung 840 EVO read speed drops on old-written data in the drive

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post #2641 of 3282 (permalink) Old 04-23-2015, 07:13 AM
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For the cautious out there:
Code:
  File: Samsung_Magician_Setup_v46.zip
  Size: 17,295,270 bytes
CRC-32: 60367088
   MD4: 7e6d851762004fb9c56b165174af2870
   MD5: 9e280367506209149595e16190bd4eb9
 SHA-1: 5ca33a4835717a973b2cb4640cf531841ec2d9d0
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post #2642 of 3282 (permalink) Old 04-23-2015, 07:16 AM
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Quote:
Originally Posted by Palorim12 View Post

Please bench SSD using he tune pro or ssd read speed tester before doing the new optimization feature they added. According to the reviews, The fw update alone should have brought up your speed

According to reality, get your refund and run, and get a good drive. from crucial mx200 to sandisk extreme pro to plextor m.2 pcie (from cheapest to most expensive lol)

Do your own research and testing, both for peace of mind that (a) What you're reading is true, and that (b) Your gear ain't defective!
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post #2643 of 3282 (permalink) Old 04-23-2015, 07:56 AM
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Quote:
Originally Posted by Darkhaze View Post

According to reality, get your refund and run, and get a good drive. from crucial mx200 to sandisk extreme pro to plextor m.2 pcie (from cheapest to most expensive lol)

+1, no firmware is going to fix this TLC garbage!

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post #2644 of 3282 (permalink) Old 04-23-2015, 08:16 AM
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Did some benchmarks before and after the update smile.gif
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post #2645 of 3282 (permalink) Old 04-23-2015, 08:17 AM
 
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are 840 pro's affected at all ? Are there ANY instances of people reporting it on 840 pro ? I've been eyeing one just need to be sure.
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post #2646 of 3282 (permalink) Old 04-23-2015, 08:20 AM
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I just installed the new v4.6 version of the Samsung SSD Magician on my brother's desktop that sadly still has an 840 EVO in it and it still says that it has the latest firmware version. What gives? I thought that there was a new version of the firmware packaged with the version 4.6 of the program. His SSD has firmware version EXT0CB6Q.


Tom
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post #2647 of 3282 (permalink) Old 04-23-2015, 08:25 AM
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Quote:
Originally Posted by Darkhaze View Post

Why would you sell someone a POS evo? are you that horrible a person? Get your refund. Don't plague someone else with this... has samsung twisted your heart, are you on the dark side with them now?
First of all, I don't think Samsung will issue refunds anymore, once the new firmware is out. They'll just send me away, most probably trying to sell me the idea that their new fix solves the bug, so no refunds. I'm pretty sure that this would happen.

And no, I'm not trying to plague anyone with this. Just that there are a LOT of people who don't care and are willing to buy the 840 EVO, just because they're Samsung fanboys.
I'll sell it for less than it's worth, around 20% lower than its real price, but at least I can get rid of it soon ! I'm fed up with this can-and-mouse game, I'm done with Samsung's POS tricks..

I already have a Crucial MX200, a BX100 and a Plextor M6S, all work flawlessly in various PCs/laptops; I'll just buy another MX200 to replace the 840 EVO.

I will not buy any TLC-based SSD ever again, that's for sure. And sorry all fanboys, but no more Samsung brand either.
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post #2648 of 3282 (permalink) Old 04-23-2015, 08:32 AM
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I have updated the firmware(EXT0DB6Q) with Magician 4.6 under Win7 on my 840EVO 120GB.
(I have dual boot system, Linux Mint 17.1 on 840EVO, Win7 - just for some windows programs - on HDD)

Firmware update was successful everything seems to work, under Win7.

When I started Linux Mint I got a lot of file system errors, freezes, and a system that couldn't boot up.


I've find out the problem is with TRIM. (TRIM seems to be OK under Win7)
The SSD become become totally unstable after the TRIM command (fstrim) on Linux Mint 17.1.
I've got massive I/O errors.

I had to disable the scheduled(on every boot) TRIM functionality under Linux Mint.
After that, Mint was booted normally, now 840EVO seems to be stable (no sign of data loss).

TRIM was fully functional with the previous EXT0CB6Q firmware on Linux Mint 17.1.
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post #2649 of 3282 (permalink) Old 04-23-2015, 08:39 AM
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Quote:
Originally Posted by Nearseer View Post

I have updated the firmware(EXT0DB6Q) with Magician 4.6 under Win7 on my 840EVO 120GB.
...
Firmware update was successful everything seems to work, under Win7.

When I started Linux Mint I got a lot of file system errors, freezes, and a system that couldn't boot up.

I've find out the problem is with TRIM. (TRIM seems to be OK under Win7)
The SSD became totally unstable after the TRIM command (fstrim) on Linux Mint 17.1.
I've got massive I/O errors.
....
Ouch !
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post #2650 of 3282 (permalink) Old 04-23-2015, 09:48 AM
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What the... it says there is no new firmware under Win 8.1. EXT0CB6Q is the latest.

Is this suppose to be Win 7 fix only or what?
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