DDR3 Memory Clock and AMD dual Graphics

[Fug]

Greetings, after some consideration I've just purchased an Asus CM 1745 desktop with the A10-5700 APU and 8GB DDR3-1600 RAM. I was impressed with what I learned about AMD's dual graphics options with DirectX 11.

In seeking a GPU to utilize dual graphics, I have narrowed it down to two cards. One of these cards is the XFX HD-667X-ZHF3 and the other is the Asus HD6670-2GD3.

My question is essentially whether I would be better off with the Asus at 1800Mhz or the XFX at the same 1600Mhz as my RAM, due to the fact that the APU utilizes that RAM. Could the 200Mhz difference cause any issues? Am I better off with 2GB from the same manufacturer as my desktop?

 

[prototype18]

I would go with asus. Cooler /Quieter and can oc more.

 

[bobusboy]

IF the ASUS has the Direct CUII cooler then go with that; I have their cards with that cooling solution and they over clock really well and run cooler than the same cards in my brothers rig (yea I know there are other factors at play but when they're in the same room its not uncommon to see his 5-10*C hotter)