How does the CPU handle the RAM?

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xodaQo

n00b
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Dec 29, 2010
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For example, the Sandy Bridge 2600K processor (and the other i7s) are listed to support up to 1333MHz bandwidth of RAM. Everywhere I look, people seem to be using RAM that is faster than 1333MHz, and are also recommending the use (and overclocking) of RAM that is over 1333MHz.

Someone, please give a detailed answer as to how/why this happens, or provide a link to an article that will explain it. I have not been able to find the answer on my own.

Many thanks.
 
As I understand it the ram divider can be configured for speeds higher than 1333 but Intel won't guarantee it working at those speeds and as such boards won't usually set it that way by default.
 
plugwash said:
As I understand it the ram divider can be configured for speeds higher than 1333 but Intel won't guarantee it working at those speeds and as such boards won't usually set it that way by default.
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On Sandy Bridge, the memory must be able to operate at 1333 at 1.5v so that the system can be started the first time or, after a CMOS clear. Otherwise, you may never get the system to post the first time so that you can enter the BIOS when all settings are manufacturers defaults. It has nothing to do with guaranteed OC speeds.
 
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