During the last couple of weeks, numerous reports of Samsung SSD 840 and 840 EVO having low read performance have surfaced around the Internet. The most extensive one is probably a forum thread over at Overclock.net, which was started about month ago and currently has over 600 replies. For those who are not aware of the issue, there is a bug in the 840 EVO that causes the read performance of old blocks of data to drop dramatically like the HD Tach graph below illustrates. The odd part is that the bug only seems to affect LBAs that have old data (>1 month) associated with them because freshly written data will read at full speed, which also explains why the issue was not discovered...

SanDisk Ultra II (240GB) SSD Review

For nearly two years Samsung was the only manufacturer with an SSD that utilized TLC NAND. Most of the other manufacturers had talked about TLC SSDs in one way...

48 by Kristian Vättö on 9/16/2014

FMS 2014: Marvell Announces NVMe-Enabled PCIe 3.0 x4 88SS1093 SSD Controller

Two weeks ago Marvell announced their first PCIe SSD controller with NVMe support, named as 88SS1093. It supports PCIe 3.0 x4 interface with up to 4GB/s of bandwidth between...

23 by Kristian Vättö on 8/21/2014

FMS 2014: Silicon Motion Showcases SM2256 SSD Controller with TLC NAND Support

A couple of weeks ago at Flash Memory Summit, Silicon Motion launched their next generation SATA 6Gbps SSD controller. Dubbed simply as SM2256, the new controller is the first...

8 by Kristian Vättö on 8/20/2014

SanDisk Releases Ultra II SSD: Bringing More TLC NAND to the Market

It is a busy day in the client SSD space as earlier today AMD announced the company's first SSD, the R7, and now SanDisk is releasing the Ultra II...

22 by Kristian Vättö on 8/19/2014

Computex 2014: Memoright Shows XT3 TLC SSD & NF8-830 PCIe SSD

Memoright is a company that some of you might have heard of as we reviewed one of their drives back in 2011 but they have been out of the...

9 by Kristian Vättö on 6/12/2014

Computex 2014: Samsung Launches TLC-Based 845DC EVO for The Enterprise

While this is technically not a Computex announcement, Samsung is launching their TLC NAND based 845DC EVO today. This isn't Samsung's first TLC based enterprise SSD as a while...

11 by Kristian Vättö on 6/3/2014

Samsung SSD 840 EVO mSATA (120GB, 250GB, 500GB & 1TB) Review

Samsung is in a unique position in the SSD market. It’s the only company in the consumer SSD business with a fully vertically integrated business model and zero reliance...

65 by Kristian Vättö on 1/9/2014

Samsung SSD News: 1TB 840 EVO mSATA, RAPID for 840 Pro & eDrive for 840 EVO

Today has been a busy day for Samsung's SSD department with three releases/announcements. With three different topics, I've separated this article into three, so let's begin with the hardware. Samsung...

35 by Kristian Vättö on 12/9/2013

Samsung SSD 840 EVO Review: 120GB, 250GB, 500GB, 750GB & 1TB Models Tested

I'm continually amazed by Samsung's rise to power in the SSD space. If you compare their market dominating products today to what we were reviewing from Samsung just a...

133 by Anand Lal Shimpi on 7/25/2013

Samsung SSD 840: Testing the Endurance of TLC NAND

NAND endurance is something that always raises questions among those considering a move to solid state storage. Even though we have showed more than once that the endurance of...

46 by Kristian Vättö on 11/16/2012

Samsung SSD 840 (250GB) Review

Samsung has been making steady progress in becoming one of the major players in the consumer SSD market. Even before the SSD 470, Samsung was a major player in...

85 by Kristian Vättö on 10/8/2012

Samsung SSD 840: Preliminary Benchmarks

I just got back from Seoul last night where Samsung held their SSD Global Summit for the first time. As a souvenir, Samsung gave us all an 840 SSD...

12 by Kristian Vättö on 9/27/2012

Samsung Releases TLC NAND Based 840 SSD

Along with Samsung's release of the 840 Pro SSD today, Samsung is also releasing a more mainstream oriented 840 SSD. It's based around the same Samsung MDX controller as...

29 by Kristian Vättö on 9/24/2012

Understanding TLC NAND

In almost every SSD review we have published, Anand has mentioned how an SSD is the biggest performance upgrade you can make today. Why would anyone use regular hard...

91 by Kristian Vättö on 2/23/2012

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