mSATA SSD slower than HDD

[nnvt]

Hi!

I recently bought a new laptop (Asus N551VW) that came with a 120gb kingston mSATA SSD and a 1tb HGST 5400RPM hard drive.

I'm having some problems with my ssd, it's slow, very slow... the write speeds are lower than the 5400RPM drive which is just insane... Here is a screenshot:

Screenshot

C:\ is the SSD and D:\ is the 5400RPM HDD, both drives are running at SATA 6gb/s

Model numbers for both drives:
SSD: Kingston RBU-SMSM151S3128GD1
HDD: HGST HTS541010A9E680

Does anyone have an idea on why this SSD is so slow?

Thanks

 

[voodoobunny]

Looking at the SSD in PassMark, it does seem to be a particularly slow drive. (http://www.harddrivebenchmark.net/hdd.php?hdd=KINGSTON+RBU-SMSM151S3128GD1&id=11142)

How full is it? SSDs typically lose performance when they are more than 90% full, so if it is close to capacity then you might be experiencing *additional* performance loss from an already-slow drive.

 

[rgd1101]

Looking at the SSD in PassMark, it does seem to be a particularly slow drive. (http://www.harddrivebenchmark.net/hdd.php?hdd=KINGSTON+RBU-SMSM151S3128GD1&id=11142)

How full is it? SSDs typically lose performance when they are more than 90% full, so if it is close to capacity then you might be experiencing *additional* performance loss from an already-slow drive.

From the OP screenshot, the right side one, 78% full