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Corsair XMS Memory Question

post #1 of 13
Thread Starter 
My question is simple and relates to the settings printed on the memory stick sticker. It says the following:

1600MHz 8GB (2x4GB) 9-9-9-24 1.65V

Does 1.65V represent the maximum voltage or the required voltage? I'm asking because my BIOS gives me an evil red-texted over-voltage warning when I set the voltage to 1.65V. It could be that my BIOS is a pansy too.
BIOSgunner.gif
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post #2 of 13
Required voltage to run it @ that speed and timing. Most DDR3 can handle up to 1.75v.
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post #3 of 13
Maximum recommended voltage.

Personally, I always use as few volts as I can get away with. Been quite a while since I ran any of my DDR3 at the full 1.65v rated voltage.

Ignore the BIOS warning, there is no magical line where one voltage setting is safe and then a hundredth of a volt higher is not. Regardless, only use what you need.
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post #4 of 13
Thread Starter 
Quote:
Originally Posted by dixson01974;11925278 
Required voltage to run it @ that speed and timing. Most DDR3 can handle up to 1.75v.

Thanks. I'm new to overclocking and such. For the past month I've been trying to figure out why I keep getting random lag under low-loads. I had my memory voltage set to 1.63V thinking that 1.65V was the max. Changed the voltage to 1.65, lost the lag. WHAT A NOOB I AM redface.gif
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post #5 of 13
I use very similar memory, I think my is rated 8-7-8, but I run it at 9-9-9 and am stable at 1.5v.

Edit: I find that even though they say 1.65v usually only when you have 1866+ memory do you ever need that much power, but every chip is going to be different and have different power needs.
Edited by tconroy135 - 1/7/11 at 10:14am
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post #6 of 13
lol I just got that RAM in the mail today! yeah that's normal, most bios give a warning when the voltage is above 1.60v, its pretty difficult to get RAM that's below that voltage and its nothing to worry about smile.gif
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post #7 of 13
Thread Starter 
Quote:
Originally Posted by jy360;11925342 
lol I just got that RAM in the mail today! yeah that's normal, most bios give a warning when the voltage is above 1.60v, its pretty difficult to get RAM that's below that voltage and its nothing to worry about smile.gif

haha, cool. I found out the hard way (or the noob way) that unless the voltage is set to the sticker specifications, you'll get random lag at the most stupid times ie: 45 second "not responding" delay when opening a PDF document. Correct voltage settings fixed this issue.
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post #8 of 13
Quote:
Originally Posted by superunintelligible;11925370 
haha, cool. I found out the hard way (or the noob way) that unless the voltage is set to the sticker specifications, you'll get random lag at the most stupid times ie: 45 second "not responding" delay when opening a PDF document. Correct voltage settings fixed this issue.

yeah, I havnt used this RAM yet so I don't know what it can do but I would go for tighter timings rather than higher clock speeds.
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post #9 of 13
Thread Starter 
Quote:
Originally Posted by jy360;11925422 
yeah, I havnt used this RAM yet so I don't know what it can do but I would go for tighter timings rather than higher clock speeds.

Question about that: to get higher timings on these RAM sticks, is that going to be a matter of lowering them one digit at a time, running memtest, and possibly increasing voltage more? I know these sticks can run faster, just haven't tried it yet.
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post #10 of 13
My XMS Classics recommend 1.65v, but my Asus P6T motherboard only does 1.64v or 1.66v. So, it's been running 1.66v for well over a year now with no problems.

The warning is similar to Intel's maximum recommended voltage. You try not to exceed it, but going a bit over isn't a problem.
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