SSD speed drops down.

[Khanmobeen494]

Hello guys. I have a Corsair Force LE 120gb version(non-usa) .
when ever i transfer data from my ssd to hdd, it starts from about 400MB/s and suddenly drops to around 200 MB/s . ssd is almost empty except windows. is this normal ?. crystal disk mark shows about seq. read speed about 560 MB/s and seq. write of about 509 MB/s .
while the box says that i can get about 580 MB/s of transfer speed.
ssd is connected in SATA 3 port with an right-angle sata connector.
Motherboard : Gigabyte B150m DDR4
Processor : i5 6500
Ram : Corsair vengeance DDR4 8gb 2133mhz.
hdd : Seagate barracudas 1tb 7200 rpm 64 mb cache

 

[Mattib 050]

If you're transferring data to your HDD, then the speed will be limited by that of the HDD. So that's completely normal, you'll probably never see benchmark speeds in real-world applications anyway.