Asus P5b Deluxe With 8gb Of DDR2 800mhz?

i have 4 2gb Kingston HyperX memory at 800mhz on my P5b Deluxe. So 8gb in total.At first no problem, the motherboard recognize all 8gb with the Memory remap function 'on'The problem is that it recognizes it has PC-5300 and not PC-6400 (as it should cause they are)- So is there a way in the bios to make it that my motherboard recognize them has PC-6400 (800mhz) ? Other thing, Even though i am sure i bought exactly the same memory, in the sandra report, the 2 pairs are different.

Here is the Sandra report:

Processor
Model : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
Speed : 3GHz
Cores per Processor : 2 Unit(s)
Type : Dual-Core
Integrated Data Cache : 2x 32kB, Synchronous, Write-Thru, 8-way, 64 byte line size
L2 Cache : 6MB, ECC, Synchronous, ATC, 24-way, 64 byte line size, 2 threads sharing

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