MyDigitalDiscount via Amazon has 512GB Samsung PM851 50mm mSATA SSD (MZMTE512HMHP) on sale for $119.99 - $20 w/ promo code SD99ULTD = $99.99. Shipping is free. Thanks iconian
Editor's Notes & Price Research
- Please see forum thread for additional discussion. -qwikwit
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$100 + free shipping w/ coupon code MDDSD099
"It fixes the gradual degradation of read performance of Samsung PM851 SSD drives which was caused by an issue with the voltage decay compensation algorithm, which lead to excessive read retries on old data. After the update, the performance seems to be increasing from 321 MB/sec to 503 MB/Sec."
Also note the SSD in the test at that link is the exact same part number as this SSD.
We have also confirmed with Samsung that the firmware on these drives, EXT42M0Q fixes the issue with the voltage decay compensation algorithm."
-NO, not fixed. They problem still exists as how those chips work. they just correct for it by rewriting the data occasionally.
Yes! EXT42M0Q is the latest firmware for PM851 OEM version of 840EVO SSD mSATA .
However, EXT43B6Q is the latest firmware for non-OEM version of 840EVO SSD mSATA.(EXT42B6Q is the fisrt firmware update, which is equivalent to EXT42M0Q.)
The Samsung Magician 4.9 Performance Optimization Advance tab, which rewrites/rearranges the data to at least temporarily fixes reading of old data, only works for EXT43B6Q instead of EXT42M0Q (credits to laptopquestions).
In other words, you won't be able to use Magician for PM851. U can use DiskFresh, but it worked only for 2 weeks before ssd is slow again.
This is a direct link to a non-public hotfix for the problem on Microsoft Suface Pro machines:
It will update the firmware from EXT41M0Q to EXT42M0Q and install a program that "optimizes" the drive.
For surface owners thinking about swapping out this drive for something different - fuggedaboudit! The Surface Pro 3 is just about as non user serviceable as you can get. The Pro 4 is similar.
The promotional code you entered is not valid. SD99ULTD