Originally posted by: Actaeon
Guaranteed? I don't think it'd be guaranteed unless mentioned in the product description.
Lowest C1 p4 is the 2.0 IIRC.
Originally posted by: godspeedx
i'm pretty sure the 2.5ghz has C1, that's what I have (from newegg). 2.5ghz NOT 2.53. Great for overclocking too, but probably not the cheapest.