CPU-Z can't identify my Corsair correctly

Why can't CPU-Z identify my TwinX 4000 modules properly. The program detects them as 3700 Corsair modules. I figuire its because my fsb is only @ 243 (i Have a p4 2.8E chip) and the cpu/mem ratio at 1:1 which means the ram is not running at its full potential.

Or maybe i got ripped off?

Can anyone clarify this? Would appreciate it!

CPU-Z identifies my PC3000 as PC2700. It tends to make a lot of mistakes, I guess.

CPU-z Identifies my Corsair PC3200 as PC2700.
I doubt that you got ripped off.

Suma.

my pc4000 that runs 290+ is recognized as pc3200.. they can put anything they want on the spd chip . the main point is, does it run well...

Well i get 6000+ in sandra bandwidth benchmark tests, so i guess it runs fine.