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RAM Voltage

post #1 of 17
Thread Starter 
I just started overclocking, and i'm just wondering how much voltage i can give my RAM.

It comes stock @ 667mhz and 1.8V, but even the labels show 800mhz @ 2.0V

The info should be in my system info below.

Any help is appreciated!
    
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post #2 of 17
Thread Starter 
In order to OC my cpu past 400mhz (3.2ghz), i have to take my RAM past 800mhz to keep a 1:1 ratio, but the RAM becomes unstable beyond about 840mhz (if kept at 2.0V)

I'm currently running the cpu @ 3.52ghz, with the ram at 880mhz, but i had to up its voltage to 2.25V to keep it stable.

The temps at full load with these settings are hovering around 53 degrees.

Do you think its ok to run it like this if the system is stable?
    
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post #3 of 17
2.0v should be no problem for those memory sticks. NewEgg rates them at 800mhz, so shouldn't be a problem. Your MoBo is rated at 1066mhz, so I'd personally go with some RAM rated for that speed just to make OC'ing easier.

EDIT - I'm not sure how much of a beating they can take, but .25 overvolt would make me nervous.
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post #4 of 17
Thread Starter 
So maybe i'll just try them at 2.25V and if they crap out i'll just buy some PC8500?
    
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post #5 of 17
Yes, the higher the frequency the higher the voltage has to be. They should run fine @800 2.0v.
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post #6 of 17
if you go over 2.0v you better be using active cooling on those ram sticks as they will get really hot. Best way to find out is touch your ram sticks with them loaded up at the voltage and see how hot they are. But touch a metal part of your case first to discharge any static in your body, better safe then sorry I say biggrin.gif

Also you prob will have to loosen your timing up on those chips since they are rated 4-4-4-12. 5-5-5-15 should give you a little more head room to oc your ram @ the rated voltage
Edited by terraprime - 3/20/11 at 9:20pm
 
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post #7 of 17
Thread Starter 
I can't find a way to keep the RAM at 800mhz when my processor is beyond FSB400. The lowest option on the RAM is always double the FSB. Any clues?
    
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post #8 of 17
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Also, will i see a performance difference between 4-4-4-12 and 5-5-5-15, and how important is the 1:1 ratio?
Edited by Kegler - 3/20/11 at 9:27pm
    
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post #9 of 17
Quote:
Originally Posted by Kegler;12808733 
Also, will i see a performance difference between 4-4-4-12 and 5-5-5-15, and how important is the 1:1 ratio?
the

1:1 ratio isnt that big of a deal unless you are a benchmark whore, and it will be a bit slower but if you can get your ram up to 1066mhz stable @ those timings it wont matter really. Of course in real world you wont notice a difference in anything but maybe games but like a 1% difference. Overclocking the cpu will have a more positive impact then the ram. At least for me that is how i see it.
 
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post #10 of 17
1:1 ratio has no (or very little at the least) bearing on performance. As said previously you will see more gain from a higher CPU clock.

Your on an Intel rig, so the rule of thumb is: Frequency > timings.
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