Live Memory Test: Overclock 'Em Till They Crash

The first day of our live memory stress test has already been very interesting. We stress-test the memory in alphabetical order, which is why GeIL was the first candidate. Its DDR2-667 memory had to endure the strain over a period of 12 hours, and GeIL's review samples were able to reach a maximum clock speed of 471 MHz, which corresponds to DDR2-942. However, the memory that we bought in retail already crashed at 421 MHz - despite it being exactly the same product. While memory vendors report clock speed tolerances of 2-3%, this difference resembles a puzzling 12% variance. Since we do not know the reason, we asked GeIL for a statement.