RAM underclocked

The only choices are:

Auto
DDR3-800
DDR3-1066
DDR3-1333

Auto reverts it to DDR3-1333. Also, why does CPU-Z say the max bandwidth is 667 MHz?
cpu-zram.jpg
 
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Have you got the bios setting for the memory profile for what ever Asus calls it, something like XMP mode
 
Yes, I found that when playing around in the BIOS. It bumped my BLCK to 160 from 133 thus allowing my RAM to run at 1600 MHz. However, it changed my multiplier on my i5 to 17 making my CPU run at 2.72 GHz rather than 2.67 GHz and disabled turbo boost. I assumed this was all good, so I just left it at that. Are these the optimal settings?
 
you have an i5 750? change the multiplier to 20, set bclk to 160, and set your ram to 1600mhz. you won't need any voltage changes. make sure you disable turbo boost.
 
Ok, so now my motherboard BIOS settings are at:

Multiplier - 20
BLCK - 160
RAM - DDR3 1600
RAM voltage - 1.6 (read somewhere I should do that)

I also read to not let the BIOS handle the CPU voltage automatically. GPU-Z says I'm running the core voltage at 1.280v. Is that ok? Should I manually set the CPU voltage?
After having all 4 cores fully loaded for ~ 5 mins, my temps are:

Core 0 - 39
Core 0 - 37
Core 0 - 34
Core 0 - 35
AUX - 39
CPU - 52
System - 52

What's the difference between the core temps and the CPU temp? What is AUX temp? I'm assuming System temp is the air in the case, right? Sorry for the basic questions, but any help would be appreciated.
 
it looks all good... but isn't RAM meant to run at 1.8v/1.9v standard? try setting the mem voltage to auto and see what that does
 
I believe normal RAM is, but the i5 may be damaged by running RAM voltages higher than 1.65 (or so I've read), so I'd rather keep it set manually.
 
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