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Hi /wsr/
I have dual-channel 8gb DDR3-1600 RAM and have been concerned with their performance for a while now. Some things feel a bit sluggish and I always have high RAM usage even with nothing running. (Pic below is only Paint.net)
While trying to overclock my CPU from 3.5mhz to 4.1 mhz, I noticed CPU-Z telling me my DRAM frequency is only 679.9mhz. I don't actually know how RAM speed works but I've always heard that higher = better. Can anyone tell me whats going on here?
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>>272991
Keep in mind DDR means dual data rate.
A DRAM frequency of 680MHz means your RAM is running at DDR3-1360.
If a frequency does NOT say "DDR3" or "DDR4", it is usually the real clock.
If you do not set anything in your UEFI, most boards just apply the modules' highest jedec profile, which is usually DDR3-1333 at CL9-9-9-24 at 1.5V.
You'll notice the sticker on your module says "XMP ready". XMP means a profile you can activate in yur UEFI, which will use the settings on the sticker.
But the best choice is usually to just set the latencies, frequency, command rate (1T is much better) and Vdimm yourself in the UEFI.
Something like DDR3-1600 at CL9-9-9-24 1T should be no problem at 1.5V, even if the XMP says 2T.
If you want to overclock your memory further than this, here are two threads on the topic of memory overclocking. You can find out which chips you have, and what kind of potential they might have in those:
http://www.xtremesystems.org/forums/showthread.php?283666-Figuring-out-G-Skill-s-SNs
http://www.xtremesystems.org/forums/showthread.php?285767-DDR3-IC-thread
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Also, high RAM usage has nothing to do with frequency. Your setup should be between around 25GB/s read, 20 write and copy, +-a couple gigs.
Just check what actually uses your RAM in task manager if you are concerned about that.
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