Rijndael (AES) vs Twofish (AES finalist)
TrueCrypt benchmarks
Hardware-accelerated AES turned off
CPU idling at 1-5%; 6.5GB used by (idle) programs + Windows
W7 Ultimate; FX-4100 CPU
16GB 1866 RAM (2x4GB Patriot Viper 3 + 2x4GB Corsair Vengence); 9-10-9-27 timing
50MB buffer, mean encrypt/decrypt speed (MB/s)
Rijndael Twofish
259 276
261 291
289 245
233 297
305 298
344 256
310 279
357 300
354 269
354 297
_______________________
306.6 280.8
100MB buffer, mean encrypt/decrypt speed (MB/s)
Rijndael Twofish
308 241
320 235
284 236
323 247
303 231
298 266
314 237
309 266
323 246
315 245
_______________________
309.7 245.0
Note: though I did not record it, Serpent (2nd place AES finalist designed with twice the intended level of security) had slightly above half the mean speed of Rijndael for most runs.
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