Originally Posted by pittsburgcat
I have G.Skills Ripjaw 6gb (3 x 2gb) DDR3 2000 (PC3 160000) with timing 9-9-9-27-2N. I have attached screenshots of my mem settings and was looking for some feedback. I'm not trying to squeeze out an extra 2-3% performance, i'm just trying to make sure that I have the "basics" set properly (I didn't set these settings, I relied on someone and I'm not sure they knew what they were doing). I just don't understand why its showing a freq of 1000mhz when it's rated at 2000 mhz.?. Please be gentle, I'm a newbie...but I am comfortable going back into BIOS and changing whatever I need to change. Any help would be appreciated.
The reason why it's 1000MHz is because that's the actual clock. But the "rated" clock is 2000MHz because it's Double Data Rate memory (DDR). Now, "DDR3" is just an advancement of DDR memory technology, so the "3" is kinda like a version number, not a multiplier.
But now the Memory tab of your copy of CPU-Z shows 760.1 MHz which means the current rated speed is 1520MHz. The SPD tab doesn't show current values; that's more or less just information about the memory that was written into the memory by the manufacturer so that it could be read by programs like CPU-Z. It's almost like a specifications sheet. The column on the far right that has the heading "XMP-2000" is the "Xtreme Memory Profile" for this memory.