USB 3.0 Transfer Speeds Slow

bubblypotater

Reputable
Dec 18, 2015
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4,510
Hey guys, didn't really know where to post this. So I recently got an NZXT H440 and an ASRock Fatal1ty Z97x Killer mobo. My question is that I was transferring some movies onto an external USB 3.0 HDD http://amzn.to/1OsQ3kD and I was getting transfer speeds of around 40-50 MBps when connected to the front USB 3.0 ports on the case and about 80 MBps when connected to the MOBO USB 3.0 ports in the back. Is this normal for USB 3.0 ports? I thought that USB 3.0 was supposed to transfer a lot quicker (up to 640 MBps)? Is there a reason my USB 3.0 ports are performing more like USB 2.0 ports? Any help would be appreciated. Thanks.