the adata is very low priced and almost always will get u 260-275.
however, it seems with the vitesta,- getting a nice kloker in the neighborhood of 285-295 is pretty much the luck of the draw. thats why alot of the guys go with komusa's pc4200 its a little more expensive but since they pretest it(or adata builds 266 sticks for them), just about everyone is getting from the mid 280's to the low 290's. now if anyone has read my simpletech thread, it appers that their nitro-4000 is adata also. but i think they probably are the newer d5 chips. seems like adata is custom making memory for different customers specs. i got an email back from randy lo at komusa, and he said they are going to be offering hyperram with the brand new 3.5ns hynix chips!! i wouldnt be surprised if adata is building them for komusa also.