For overclockers, Prime95 has a feature called "Torture Test" that allows maximum stress testing on the CPU and RAM. There are several options allowing the stress test to focus on the memory, processor, or a balance of both.

Usually Prime95 will detect an error within a matter of minutes if an overclock is not stable, however many people like to let the system "burn-in" overnight to ensure long-term stability.

The benefit of this version is that it is multi-threaded and will automatically manage worker threads to fully stress all cores of your CPU.

This is the 32bit version for Windows XP/Vista/7/8/10.

Highlights of version 29.8 include

• AVX-512 support.
• Modified torture test dialog box with new options and better understanding of the L1/L2/L3 cache hierarchy.
• More robust implementation of Gerbicz error checking in PRP tests. This replace LL testing as the default work type.

Highlights of version 29.4 include

• GIMPS has a new sub-project -- finding (probable) prime Mersenne cofactors.
• Like LL tests, PRP tests now support shift counts to aid in running double-checks.
• PRP tests now support a type of low overhead error checking that almost guarantees correct results even on flaky hardware.
• Because PRP tests are highly reliable, we now offer the option to do PRP tests instead of Lucas-Lehmer primality tests.
• For non-base-2 PRP tests, there is a new option to run each iteration twice and rollback if a mismatch occurs.

Highlights of version 29.3 include

• Enhanced error checking for LL tests
• Faster step 1 GCD for ECM and P-1 factoring