DDR3-1333 vs. DDR3-16000

[Scott Sullivan]

On 02/04/2011 11:53 PM, William Park wrote:
> Hi all,
>
> I have basic overclocking question...
>
> Most CPU specs say DDR3-1333 (i7 upto DDR3-1066), and most motherboard
> specs say DDR3-1600 or higher.  What's the point of using DDR3-1600
> memory when the CPU (memory controller inside) can only do DDR3-1333 ?
>
> Common answer seems to be for better overclocking.  But, specs for both
> 2.8GHz and 3.2GHz CPUs say DDR3-1333.  So, I don't get it.
DDR3-1333 is the default maximum "safe" speed by spec for DDR3 Memory. 
Anything over that is outside of spec, but there is sufficient demand 
for over clocking that Memory is now built to handle those higher 
speeds. It is up to the owner of the system to change the BIOS settings 
to enable those higher speeds. It is up to the person doing the 
overclocking to verify compatibility choose the appropriate voltages and 
timings.

It's very similar to running your CPU at a higher frequency, it just not 
considered "safe default" to do so unless you know what your doing.

I've done this once before when I built a machine for a friend.
-- 
Scott Sullivan
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