Question WD SN550 1TB low speed

datbi201

Commendable
Sep 2, 2018
3
0
1,510
0
Hi there,
I have 02 ssd WD Blue SN550 1TB both of which have TBW relative high 500 over 600 TB as said by manufacturer. However I think high TBW is NOT a cause of my following issue.



  • My desktop: i5 9400 + Giga B360M with 01 USB 3.1 Gen2 port + 2x8GB Adata
  • 01 SSD ported to M.2 PCIe Gen3 x4 (disk A) - system partition.
  • 01 SSD ported to M.2 PCIe Gen 3 x2/Sata (disk B) (lower speed interface)
I tested 2 disks and the speed is as it shoud.


However when I copied file (movies or ISO file, GBs size), the transfer tests are so lower than expected, especially speed from PCIex4 to PCIex2



I also tested "internal copy" (same disk copy)



I installed disk B into Orico NVME-usb with 10 Gbps speed and plug to USB 3.1 Gen 2 (10 Gbps). The test speed by CrystalDiskMark looks good (max speed of usb gen 2 port) but the copy speed so low ~50 MB/s. At least the speed seem to be constantly low.




Any advice?
Is low health status affect the performance? what wrong with my ssd or my box or smt?
Thanks guys
 

datbi201

Commendable
Sep 2, 2018
3
0
1,510
0
Sorry guys, i found out the cause of this issue.
I set "compress file to save disk" in the partition properties so system have to compress files prior to write them into disk making low speed.



The issue was fixed completely.

 

ASK THE COMMUNITY

TRENDING THREADS