In House Review - Samsung 840 Pro Series 256GB SSD

[Ian]

Today, CDRLabs brings you a review of Samsung's new SSD 840 Pro Series solid state drive. Designed and built completely in-house, the SSD 840 Pro is powered by Samsung's own triple-core MDX controller and features a SATA 6GB/s interface, specially-engineered wear-leveling and garbage collection algorithms and AES 256-bit full disk encryption. The drive also packs up to 512MB of cache and is equipped with Samsung's Toggle DDR2 NAND flash memory to deliver up to 540MB/s read and 520MB/s write speeds.


Samsung SSD 840 Pro Series 256GB Solid State Drive

[redk9258]

I'll take this off your hands when you are done testing it. LOL

[Scour]

Tbh, nobody will realize the speed-difference of the 840 Pro and cheaper SSDs in real life

[Ian]

Finally got around to posting some benchmarks with the drive in RAID.

http://www.cdrlabs.com/Reviews/samsung- ... -raid.html

[Scour]

The sequential speed is not that bad

But the 4K-speed seems not really better than with one drive.

Feeling any difference between Raid and None-Raid?

[Ian]

Feel a difference? It's kinda like going 100MPH in a car and then 200MPH in another. You just know you're going really, really fast.

I'm not sure what the deal was with the 4K speed being lower with RAID. It may have something to do with the extra latency that RAID adds. You only see this at low queue depths though.

[Scour]

I think in a Home-PC you never will have that high queue-deep

Is it only a test or do you use Raid 0 all day?

[Ian]

Yeah, during everyday use, the queue depth rarely goes above 3 or 4. Most people will never take advantage of an SSD's maximum random read/write capabilities.

It was just a test. I just wanted to see what sort of performance I could get out of two of them. A single SSD is fast enough for me.

[Scour]

A single SSD is fast enough for me.

Same here

Do you still own 2 M5P?

[Ian]

Do you still own 2 M5P?

Yeah, I actually have three at the moment. Two of the original M5P's and an M5Pro Xtreme. I'm using one of the M5P's in my Windows 8 box at work. I was going to put the other in my laptop but picked up a 512GB 840 Pro instead.

[Scour]

I´m a little bit confused of Plextor M5-series

Have a M5S 256GB FW1.03 in my Intel-Laptop with XP and Crystaldiskinfo only shows NAND-write. In a PC from a friednd with AMD 970-chipset and MS-AHCI his M5S 128GB 1.03 it shows Host Read/Write and NAND-write

What CDI shows on your Plextors?

[Ian]

I'll have to get back to you on that. Maybe you guys are using different versions of CDI? Might be something with the different chipsets too. I really don't know.

[Scour]

Tried the same Version(s) on both.

Could be a driver-prob, I remember on my AMD-System and XP it was impossible to read SMART on XP with AHCI