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wow, this m.2 sux

post #1 of 25
Thread Starter 
TOSHIBA THNSNJ256G8NU

post #2 of 25
Those speeds are correct, you bought a M.2 2280 SATA3 SSD:

http://www.esaitech.com/toshiba-thnsnj256g8nu-hg6-m.2-2280-6.0gbps-256gb-internal-solid-state-drive-ssd.html
Quote:
Overview
The new M.2 modules utilise Toshiba’s Advanced 19nm (A19nm) toggle 2.0 MLC (multi level cell) NAND, which delivers major advances in performance and power efficiency. Toshiba’s HG6 series drives are available in capacities ranging from 60 to 512GB and dramatically accelerate application start times to provide an improved computing experience. The drives are fitted with a 6Gbit/s SATA 3.1 interface and include Adaptive Size SLC Write cache technology and optional Self Encrypting feature compliant to TCG-Opal 2.0 (THNSFJ060GxNU). All HG6 models incorporate Toshiba’s robust and highly efficient Quadruple Swing-By Code (QSBC™) for improved error correction and reliability.

Specifications
Model Number: THNSNJ256G8NU
Brand: Toshiba
Alt. Part Number(s): THNSNJ256G8NU
Product Type: Internal Solid State Drive (SSD)

Technical Description
Brand: Toshiba
Model: THNSNJ256G8NU
Series: HG6 M.2 SSD
Type: M.2 2280 6Gb/s
ROHS: Yes
Capacity: 256GB
Form Factor: 22 x 80 x 3.5mm
SSD Platter Size: M.2"
Access Time: 0.1
MTTF: 1.5Mhour
SSD Type: MLC A19nm
Read Speed (Max): 534
Write speed (Max): 482

If you want >600MB/s you'll need a NVMe M.2 SSD, such as the SAMSUNG 950Pro, 960Pro/Evo or 961 series.

And yea, writes are pretty bad, but that's why we stick to the good ones even in SATA-class.
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post #3 of 25
Thread Starter 
Quote:
Originally Posted by KyadCK View Post

Those speeds are correct, you bought a M.2 2280 SATA3 SSD:

http://www.esaitech.com/toshiba-thnsnj256g8nu-hg6-m.2-2280-6.0gbps-256gb-internal-solid-state-drive-ssd.html
If you want >600MB/s you'll need a NVMe M.2 SSD, such as the SAMSUNG 950Pro, 960Pro/Evo or 961 series.

And yea, writes are pretty bad, but that's why we stick to the good ones even in SATA-class.


It came with this laptop. I just thought m.2 are suppose to be super fast. My samsung 840 pro's in raid 0 beats the crap out of this ssd.

Uhg, I think I made a bad decision trading my pc for this laptop. even though I kept all the ssd's and hdd's.
post #4 of 25
Thread Starter 
Wonder if my laptop is NVMe M.2 compatible?

acer predator 15 g9 591


Edited by HITTI - 4/14/17 at 5:43am
post #5 of 25
Quote:
Originally Posted by HITTI View Post

It came with this laptop. I just thought m.2 are suppose to be super fast. My samsung 840 pro's in raid 0 beats the crap out of this ssd.
There are two types of M.2 drives: SATA and PCIE. Yours is a SATA drive and uses the same lanes (so gets the same performance) as a conventional SATA SSD.
post #6 of 25
M.2 is just a connector format. It happens to support two types of signalling, which is unfortunate and confusing IMO.
post #7 of 25
Thread Starter 
ok guys maybe I need to do a secure erase on this ssd, can anyone help me find software to SE the ssd, I tried looking for software but couldnt find any.

TOSHIBA THNSNJ256G8NU

Thanks!
post #8 of 25
Seems to me to be a SATA varient m.2...
 
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post #9 of 25
The problem here isn't SATA, it's that it is a budget drive. There will be budget NVMe M.2's as well (Intel's 600p) with awful write performance.

The problem is that cheap SSDs don't have many NAND devices on them and don't utilize all the channels on the backend of the controller chip. It also doesn't help they are using TLC NAND which is slower. Low queue depth writes are going to be pretty poor performance with TLC.
     
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post #10 of 25
Thread Starter 
Quote:
Originally Posted by briank View Post

The problem here isn't SATA, it's that it is a budget drive. There will be budget NVMe M.2's as well (Intel's 600p) with awful write performance.

The problem is that cheap SSDs don't have many NAND devices on them and don't utilize all the channels on the backend of the controller chip. It also doesn't help they are using TLC NAND which is slower. Low queue depth writes are going to be pretty poor performance with TLC.

Once i sell my my 2 128gb 840 pro's im buying the samsung evo m.2 sata 110 bucks 250gb.
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