Buying new ram , crucial incompatible?

[uzayr99]

So i wanna upgrade my ram to DDR3 8GB and i figured i'd go with this:

http://www.amazon.co.uk/Crucial-Ballistix-BLS2CP4G3D1609DS1S00CEU-DDR3-Memory/dp/B006YG94Y2/ref=sr_1_2?s=electronics&ie=UTF8&qid=1342107728&sr=1-2

Now to check the compatibility i figured i'd head over the Crucial's site and enter my motherboard details , now when i run it it's states that it's incompatible the only reason being this ;
"Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules"

Is the ram actually incompatible? I don't really understand why it would throw that at me when it is a double kit.

Motherboard : http://www.asrock.com/mb/overview.asp?Model=N68C-S%20UCC&cat=Specifications

As far as i can tell it should be all good

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Any help appreciated

 

[h3sham]

u can install both but to use DDR3 u need to be using a AM3 CPU.

 

[uzayr99]

I'm aware , but that ram is compatible right?
I have an Am3 Cpu

 

[bryanl]

The RAM is compatible, but Ballistix is Crucial's worst line, and it would be better to get some of their 'non-performance' RAM, which may actually contain higher performance, higher quality chips.