Ram running too slow?

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calza

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Mar 18, 2013
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Just build a new machine, and the ram appears to be running slower than it should?

It should be 2 x 8 GB 2133Mhz.

However CPU-Z is showing it as 666.5Mhz, which is obviously a bit shy of the 1066.5 I was expecting.

CAS# Latency (CL) is showing as 9 clocks too. This was meant to be 10?

Is there something simple to this, maybe I haven't configured something on my motherboard correctly? (Asus Maximus VI Hero)
 
Solution
SethJPC
Yep go into the bios and find where to st the memory clock or xmp higher. As for the CAS being lower it should rise up to 10 when you get the RAM up to 2133Mhz as the faster the RAM is the higher the CAS (generally)
.
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qwertyDS

qwertyDS

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Sep 25, 2013
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After you first install your RAM the motherboard will always set to the lowest possible speed to make sure that it boots,
later you can overclock your RAM to 2133Mhz if your motherboard does support it.
 
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SethJPC

SethJPC

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Sep 14, 2013
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Yep go into the bios and find where to st the memory clock or xmp higher. As for the CAS being lower it should rise up to 10 when you get the RAM up to 2133Mhz as the faster the RAM is the higher the CAS (generally)
.
 
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