Choosing DDR3 speed

[mrshinsa]

Hi I'm building a PC and need some DDR3, but confused about all the speed etc.

Following is the mobo and CPU so far:
ASUS AM3 AMD 880G

http://www.newegg.com/Product/Produc...82E16813131654

and


Athlon II X2 245 Regor 2.9GHz
http://www.newegg.com/Product/Produc...E16819103687"]


Which DDR3 is the minimum required to run these?
Which DDR3 speed is recommended for overclocking?

Thanks in advance

 

[Yellowbeard]

My suggestion: http://forums.anandtech.com/showthread.php?t=2102329

 

[mrshinsa]

I found a good link which explains the ddr3 speed in relation to the cpu and mobo, which was exactly what I was looking for:
Link


AMD Overclocking Equation:
(CPU Multi) * (FSB) = (CPU Freq)
(CPU Multi) / (Memory Divider) = (Divisor Ratio)
(CPU Freq) / (Divisor Ratio) = (RAM MHz) (* 2 = DDR MHz)
(NB Multi) * (FSB) = (NB Freq)
(HT Multi) * (FSB) = (HT Freq) **

 

[mv2devnull]

(CPU Multi) * (FSB) = (CPU Freq)
(CPU Multi) / (Memory Divider) = (Divisor Ratio)
(CPU Freq) / (Divisor Ratio) = (RAM MHz) (* 2 = DDR MHz)

Hmm ...

[CPU Freq] / [Divisor Ratio]
= [(CPU Multi) * (FSB)] / [(CPU Multi) / (Memory Divider)]
= [(CPU Multi) * (FSB) * (Memory Divider)] / [CPU Multi]
= (Memory Divider) * (FSB) = (RAM MHz) (* 2 = DDR MHz)

Makes sense, but some of the text in the link was equally baffling (must be due to semantics).