HDD and SSD significantly slower in practice than Samsung Magician is telling me

[louisbonjwa]

So I just ran some benchmarks on Magician and the results were as follows

SSD
Read: 558MB/s
Write: 441MB/s

HDD
Read: 25MB/s
Write: 90MB/s

In practice however when I check out my "disk transfer rate in task manager for my SSD and HDD they rarely even get out of the KB/s figure and both are constantly hitting 100% active time whilst doing practically nothing.

Seeing as my benchmarks are fine I assume something in my computer must be throttling the speeds of my drives significantly for some reason. The highest I've seen my drives reach is 15MB/S which is about 30x less than my SSD should be giving me and it is making my PC almost unusable as simply opening chrome can tank my computer's speed by providing 100% active time on whichever drive is being used.

Has anyone got any suggestions as to how I can remove something capping my read and write speeds if there is anything I can do at all?

 

[KahouAoki]

Samsung Magician might be displaying the results in megaBITS per second, not megaBYTES.

 

[Rdslw]

Best benchmark is real example:
get ISO image and copy it from pendrive to those 2.
SSD Disc tend to burst first few second, so it can be 500MB/s for 3 sec and then 80MB/s
for HDD that's what you get when disc is close to full check if you have ~20% free.
also check what SATA port you're using. Sometimes they are shared with something else, like DVD or HDD.

 

[USAFRet]

This depends on several factors.

1. What are you copying to and from?
That uber SSD speed would only be seen if copying a single large file to another SSD.

2. What type of data?
If a whole bunch of smaller file, it WILL be a lot slower. The SSD much, much faster due to access time, but still slower.

 

[rgd1101]

MERGED QUESTION
Question from louisbonjwa : "HDD and SSD reaching 100% active time with little to no activity"

My HDD is reaching 100% active time with absolutely 0 activity on the computer. I can sit here and it goes from 0 to 100% with absolutely no activity taking place. The read/write speed also seems incredibly low and inconsistent.

I've tried pretty much every single piece of advice already already out there for this problem, from stopping superfetch and windows search to doing a complete system restore to no avail. I've gone through thread upon thread of similar problems and nothing has worked so be warned I've probably already tried what you will suggest. I also tried using an old windows 7 HDD I own but the same problem occurred and have done several malware and virus scans using Norton and Malwarebytes which have turned up nothing.

I tried switching over my Steam games onto my SSD but the same thing happened, when downloading games the SSD went to 100% active time and had a delay of over 5 seconds which leads me to believe the fault might not actually be with my hard drive and I'm guessing it's not some kind of app influencing this because of the system restore.

I was going to get a new hard drive until I realised my SSD was having the same problem and now I have no idea how to even identify the problem. Crystal disk says my HDD has issues with the current pending sector cound and uncorrectable sector count but that doesn't explain the SSD exhibiting similar behaviour.