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Bitlocker performance drop on SSDs?

Last response: in Storage
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December 6, 2011 2:55:55 PM

I installed the OCZ Vertex Plus 120 GB SSD on a Dell E6510 laptop that requires bitlocker by IT policy. I took benchmarks before and after and noticed a huge drop in some performance numbers. Is this normal?

BEFORE BITLOCKER
https://lh3.googleusercontent.com/-wJaqTiLHRcM/Tt5HF3-Z...

AFTER BITLOCKER
https://lh3.googleusercontent.com/-fSq36AkzNS4/Tt5HHb-r...

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a b G Storage
December 6, 2011 3:50:31 PM

Considering bit locker is drive encryption - you will probably get a performance decrease with it. Although taking that big of a hit is pretty weird.

If you don't notice the difference with it anyways - I wouldn't worry about synthetic benchmarks too much especially if you cannot see the difference yourself.

http://forum.notebookreview.com/lenovo-ibm/216904-bitlo...

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December 7, 2011 3:41:09 AM

It felt weird, esp. that read performed dropped more than write performance and i have a core i7 on the laptop. I didn't use the system much before I encrypted the drive, but I did sense a slight drop in performance. Of course, both beat the socks off the regular hdd I had before. I wonder if over provisioning can help.
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December 27, 2011 6:56:12 PM

Best answer selected by vvume.
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