Obviously, the .NET implementation is AesManagednot hardware. Searches for SO and Google show that AesCryptoServiceProvider(which is a wrapper around the OS cryptosystem) is usually much slower than the implementation AesManaged.
, AesCryptoServiceProvider , , . , AES-NI .
- , , , , Core i7 4770 64- Windows 8.1 Update, AesCryptoServiceProvider .
, 8 AES CBC AesManaged , ( 32 ). , AesCryptoServiceProvider 30-40%, ( ) 10 .
, AesCryptoServiceProvider, 64- Windows 8.1 Update.