SSD to HDD question

[cjallyn29]

I have a Samsung EVO 860 1TB (has my os some games editing etc.) Im transfering video files chunks about 2.5gb each to a 5TB WD HDD 7200RPM (Ryzen 1800x w/ 32GB 3200mhz ram)

When i start the transfer its about ~450 MB/S transfer speed and after about 10s it drops to 55-60
Is that normal ive only noticed it with the larger files and my flashdrive peaks almost 900 mb/s transfer write speed when i put some small stuff in and when i transfer to my bigger 64gb stick its doing the same thing as the SSD > HDD thing.

Any thoughts?

And no its not raid i dont know how to set that up or what the benefits are of it.

 

[USAFRet]

Speed relies on the speed of the slowest device in the chain.

The SSD can output fast. The HDD can accept at a slower speed.
Initially, fast. Once the cache space on the HDD fills up....slow(er).