With the adjustments to our test rig, both the retail and the review memory Kingston were equally fast. The review samples crashed at a memory clock speed of 471 MHz, which corresponds to DDR2-941, while the store bought memory modules were able to run reliably at up to 476 MHz (DDR2-954). This is only a 1.4 % difference, which proves our experience of mass production memory showing average clock speed variances of 2-3% among equal parts.

The memory that we bought in retail was able to reach 476 MHz memory clock speed (DDR2-954) before it crashed.

The review test samples crashed at 471 MHz (DDR2-941).