Out of curiosity I tried how does the transfer rate suffer from encryption. I tested TrueCrypt (now abandoned), <a href="https://diskcryptor you can check here.net/” target=”_blank”>DiskCryptor and also BitLocker.
TrueCrypt and DiskCryptor were tested od Lenovo T410 running Windows 7 x64 on non-system SSD (Corsair Force 3) and BitLocker was tested on my new HP Stream 7 tablet running Windows 8.1 x86. Results are harder to compare because I had two different hardware, so I made table to show performance impact in percent.
Here are the results: