Windows Vista recognizes the 4Gb of memory installed and rates it with a 5.9 experience score.
Although with the 32-bit version of the operating system, only 3.25Gb is able to be used.
CPU-Z shows the memory EPP timings at 5-4-4-15 at 2.1v, rather than the 5-4-4-18 indicated on OCZ's website. The Extended Performance Profile specify settings above and beyond normal SPD, and are recognized by supported nVidia chipsets.
Setting the timings and voltage manually in the system BIOS, the OCZ modules easily boot at their rated specs. OCZ rates them for an EVP or Extended Voltage Protection of 2.2v, so let's bump the volts up a hair and see what this memory will do.
At first I tried lowering it to CAS4 however it refused to POST at that setting. Putting the timings back to their stock rating, next I aimed to see how high I could go. Unfortunately the memory seems to top out fairly quickly, reaching only about 450Mhz or so before it refuses to POST. Then it had to be backed down to 440Mhz before it was 100% stable in Windows.
Well, let's try running some benchmarks at both 400 and 440Mhz and compare.