Samsung Is Working On A Fix For Slow 840 EVO SSDs

DaMaN · Post by **DaMaN** » Thu Oct 23, 2014 3:02 pm

I am running a Crucial M500 in my server / gaming rig and it just doesn't compare to the Samsung EVO in performance. I would love to spurge on the 1TB EVO but the price tag is prohibiting me from pressing the "buy" button.

Post by **FlyingPenguin** » Sun Nov 02, 2014 4:16 pm

And now Samsung seems to be grudgingly admitting that the problem also affects non-EVO versions. I have two pure 840s that are definitely showing symptoms.
http://www.pcper.com/news/Storage/Samsu ... omises-fix

Post by **FlyingPenguin** » Sat Jan 31, 2015 9:21 am

Looks like this isn't over. I'll need to run HDTach on my drives and see how they're doing:

840 EVOs still slowing down
http://www.pcper.com/reviews/Storage/Sa ... -Effective

ZYFER · Post by **ZYFER** » Tue Feb 03, 2015 11:24 am

I have a 840 EVO mSata, not sure if it is affected by this. Regardless their site it outdated. My drive has a newer firmware than their site even lists and I haven't even updated it.

Post by **FlyingPenguin** » Tue Feb 03, 2015 5:28 pm

Should affect all 840 EVOs. The last firmware update was bundled with a utility that fixed the slow memory cells. Scroll down past the firmwares. It's called something like the EVO 840 restoration tool. It installs the last firmware that supposedly fixed the issue, and then does something to the drive (probably rewrites all the cells). Takes a half hour.

You might have a recent one that has the latest firmware installed from the factory.

Post by **FlyingPenguin** » Sat Feb 21, 2015 10:57 am

Samsung releases statement on 840 EVO performance - another fix is in the works:
http://www.anandtech.com/show/8997/sams ... -the-works

ZYFER · Post by **ZYFER** » Tue Feb 24, 2015 8:41 am

Ya, it is pretty new got it in December. It doesn't seem slow at all, they might have already addressed it in these.

Post by **FlyingPenguin** » Wed Apr 15, 2015 3:32 pm

New firmware is now available to tech journalist sites for testing. Should be released to the public by the end of April. PVPer ran some tests and it seems to work. Sounds like a kludge though - they're going to have the drive basically re-write all the cells once a week during idle to refresh the cells.

New Samsung SSD 840 EVO Read Performance Fix Coming Later This Month
http://www.anandtech.com/show/9158/new- ... this-month

wvjohn · Post by **wvjohn** » Wed Apr 15, 2015 3:55 pm

I need to do this, thanks for the update.

Post by **FlyingPenguin** » Sun Apr 26, 2015 2:47 pm

The new Samsung Magician 4.6 is out. You CANNOT upgrade from the old version of Magician. You must manually download it from here:

http://www.samsung.com/global/business/ ... loads.html

The new version of Magician will then install the new firmware. There is also an Advance Performance Tool in Magician that will force a refresh of all the memory cells if you don't want to wait for it to happen in the background.

Seems to work for me. Improved performance on my 1TB drive. Time will tell if it stays that way.

DaMaN · Post by **DaMaN** » Sun Apr 26, 2015 4:58 pm

Just did this on mine thanks FP.

wvjohn · Post by **wvjohn** » Wed Apr 29, 2015 5:38 pm

I got the new magician and it seemed to speed stuff up. Set it for max life, but oddly EliteDangerous got zapped. It would go to the login and then the play screen, but the play screen would not stay up until I turned it off. Thargoids?