MemTest is a RAM reliability tester that runs under Windows. It evaluates the ability of your computer's memory to store and retrieve data accurately. A correctly functioning computer should be able to do both these tasks with 100% accuracy day in and day out. A computer that fails these tests, perhaps because of old hardware, damaged hardware, or poorly configured hardware, will be less stable and crash more often. Even worse, it will become even less stable over time as corrupted data is written to your hard disk.
RightMark Memory Analyzer is the universal CPU/Chipset/RAM test suite intended for detailed, stable and accurate measurements of the most important low-level characteristics of the CPU/Chipset/RAM subsystem of your PC. Seven types of tests are implemented in the current release of the suite, including: average and peak memory bandwidth, average and minimal L1/L2 data cache/memory latency, L1/L2 data cache associativity, decode efficiency of various simple x86 (ALU/FPU/MMX) instructions, L1-L2 data cache bus bandwidth, D-TLB size and associativity, L1 instructions cache size and associativity, I-TLB size and associativity.