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DDR3 overclocking

post #1 of 5
Thread Starter 
Ok, I've been testing a couple of configurations and I want to OC my RAM.

I'm using a Kingston HyperX kit (http://www.valueram.com/datasheets/K...C9D3K2_4GX.pdf) rated for 1600 MHz CL9-9-9-27 @ 1.65 V.

First, frequency or timings? I believe I can get the kit to 2133 MHz CL9-10-9-27, but is that better than, say, 1800 MHz CL8-9-8-27? Or maybe 1600 CL7-8-7-24?

I haven't had much time, so I'm not 100% sure of these numbers, but they're my current suggestions.

Also, I know that the voltage needed for these speeds/timings are different and I'll be considering that, but I'm not even close to the danger zone >1.65V so for now it'll be all performance

I've got far more options than just those 4 timings. Are the subtimings (or whatever) worth looking into?

And lastly, it doesn't hurt that the RAM runs at funky timings like 7-9-8-20 or something, does it? It's just lower = better, right?
Edited by B!0HaZard - 4/3/11 at 2:49am
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post #2 of 5
I have the same memory as you. Generally intel systems favor higher clocks and amd systems favor lower timings (from what i've read at least). either way, you'll probably not notice any difference in performance except in benchmarks.

also, i think 1.65v is what your ram should be at. it's not the actual 'voltage limit' like cpus have. personally, i need 1.669v to get my ram stable at 1600mhz on my board. kingston tech told me not to go above 1.7v
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by fazio93 View Post
I have the same memory as you. Generally intel systems favor higher clocks and amd systems favor lower timings (from what i've read at least). either way, you'll probably not notice any difference in performance except in benchmarks.

also, i think 1.65v is what your ram should be at. it's not the actual 'voltage limit' like cpus have. personally, i need 1.669v to get my ram stable at 1600mhz on my board. kingston tech told me not to go above 1.7v
I'm doing 1866 MHz CL7-9-7-24 1T @ <1.6V, so I'm good 2133 MHz turned out to be unstable
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post #4 of 5
Quote:
Originally Posted by B!0HaZard View Post
I'm doing 1866 MHz CL7-9-7-24 1T @ <1.6V, so I'm good 2133 MHz turned out to be unstable
that's impressive. memtest stable?
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by fazio93 View Post
that's impressive. memtest stable?
Nope, but I'm planning to do that. I've already got Memtest on a USB stick.
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M1XN
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Study Zenbook
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Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 64 GB Crucial M4 128 GB SAMSUNG Spinpoint M9T 2 TB LiteOn DL-8ATSH 
CoolingOSMonitorKeyboard
Noctua NH-C14 Windows 10 64-bit ViewSonic VP2770 Vortex Pok3r 
PowerCaseMouseMouse Pad
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