Samsung NVME (OEM) PM981 SSD Speed issues

[alexonpeace]

Just bought this drive experiencing some speed anomalies

 

[DocSwag]

Probably SLC caching isn't enabled. I'm not sure if the PM981 works with Samsung's Magician software but if it does you need to enable TurboWrite.

 

Out of curiosity, why buy a PM981 instead of a 970 evo?

[alexonpeace]

That's cause cause i got this one for 88$ where as 970 Evo is 280$
pretty big price difference isn't it!
What does " SLC caching " mean
@DocSwag

[alexonpeace]

4 minutes ago, DocSwag said:

SLC caching

 

[mikat]

I got my laptop with the exact same ssd yesterday, this is how the score should look:

 

Have you tried installing samsung magician software?

[alexonpeace]

18 minutes ago, mikat said:

That is some pretty impressive speeds

you can have a look at this ssd1.JPG

Yes i installed some samsung drivers i think its the 900 series drivers

 

its just the write speeds that are damn slow :(

[DocSwag]

3 hours ago, NaveenTech said:

That's cause cause i got this one for 88$ where as 970 Evo is 280$
pretty big price difference isn't it!
What does " SLC caching " mean
@DocSwag

Basically you SSD uses TLC (Triple Layer Cell) flash, which gives a lot higher storage density and is much cheaper than SLC (single Layer Cell) (you can have triple the capacity as SLC) but performance takes a hit (especially write performance). Samsung usually has a feature that makes some of the flash into SLC that acts as a cache so that when you write to the drive it gets filled up first.

 

Your write speeds look like what I'd expect if SLC caching wasn't enabled... usually I think there's a setting in Magician for that but unfortunately since it's a PM drive it's considered OEM and isn't supported by Magician.

 

You could try updating the NVMe driver through Windows but idk what else you could do.