Just upgraded my comp to these stats:
i5-2500k oc'ed to 4ghz (disabled turbo)
4gb ddr3 ram at 1600 mhz
intel 320-series ssd 160 gb
So the cpu-z is displaying correctly everything as they should: cpu at 4ghz, ram at 4gb at dram frequency of 800 mhz and on 8-8-8-24 timings.
However, when I run the cpu and mem benches on passmark, the scores are below average for i5-2500k. It is hovering around 6500 where even stock i5-2500ks are scoring well over 7000. The memory score too seems subpar.
I realize WEI isn't completely valid but the scores there are also giving me questions. While 7.6 for the CPU seems reasonable (might still need be bit slow for 4ghz i5-2500k), the RAM scores a shocking 5.9, when I got something like 7.0 when I was using 4gb DDR2 ram on 800mhz.