11

BitLocker encrypts the entire hard drive. I run Visual Studio and build projects much of my day. How much will BitLocker slow me down (dual core laptop with 3 GB of RAM)?

12

MaximumPC ran a few tests:

However, when we busted out the hard-drive-intensive benches, we immediately saw as much as a 20 percent hit on the encrypted system. We're not sure the PCMark06 slowdown represents real-world performance, but our Photoshop script, which includes tons of hard-drive-intensive reverts, showed a 10 percent hit as well.

What's the bottom line? We're not going to enable BitLocker on systems that don't hold crucial, mission-critical data.

Benchmark (Unencrypted Drive; Encrypted Drive):

FEAR (FPS); 56; 57

3dMark06; 8071; 8082

PCMark06 Hard Drive Suite; 6133; 4948

Photoshop CS Script (Sec); 303; 330

Sure, running 3D benchmarks doesn't really make sense as you're hardly going to encrypt a gaming rig, but in the end it's simple trade-off: performance for security.

  • newer BitLocker version have better performance – phuclv Jun 18 '17 at 10:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.