pc10600 vs pc10666

ChaiBabbaChai

Golden Member
Dec 16, 2005
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Probably just the way the manufacturer rates it so they can charge more. It's not going to run exactly at 10600 or 10666 bandwidth unless your FSB/Bclk and multis make it that way, so the advertised bandwidth is just a maximum under the rated timings and voltage. That's what I assume it to mean when I see 10666 anyway.
 
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n7

Elite Member
Jan 4, 2004
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The whole PC/PC2/PC3-xxxx is largely marketing nonsense, & is honestly, a stupid naming convention that needs to DIAF, IMHO.
It refers to maximum theoretical bandwidth.
So for PC3-10600, we have a theoretical bandwidth of 10600 MB/s.

The DDR3-xxxx is the frequency the RAM operates at, the number that actually matters.

DDR3-1333 runs @ 666 MHz, double data rate (DDR3-1333).

Do not pay any attention to the PC3-xxxxx rating, like i said, it's a largely meaningless number, & as you can see, some manufacturers arbitrarily choose higher/lower ones than the normal calculation allows for.

Normally, you calculate 8x to get the PC-xxxx rating.

So for DDR3-1333.33 x 8 = PC3-10666.66

Here are some articles that do a better job explaining it that i can.
http://en.wikipedia.org/wiki/DDR_SDRAM
http://www.hardwaresecrets.com/article/167/1
 

boglwe

Senior member
Aug 16, 2007
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Thanks everyone. You have set my heart at ease. Wonderful description N7