G.Skill GBHZ 2.0-4-4-5 @ 273.5 in P4P800

[Axylone]

I'm thinking that the motherboard is holding up the memory, allowing such a low CAS. The tRCD and tRP (x-4-4-x) cannot be lowered without losing stablilty, and I have to drop it down to ~230. The board is a P4P800e-Dlx (no mods yet).
This is OCCT and BF2 stable.

32m 12.750s w/ 2.5-4-4-5 @ 273.5 earlier, so not much difference in super-pi times.