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2GB Apacer PC2-6400 240 pin overclock

post #1 of 13
Thread Starter 
Hello, a quick question about overclocking this ram.

Its default voltage is 1.8v.
Default timing 5-5-5-18


Anyone had to overclock this ram? How much?

Please tell me the voltage, timing you used.

Thanks guys.
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post #2 of 13
Just start bumping.

I would try
2.0v
same timing
and try 1066 speed
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post #3 of 13
Thread Starter 
Ok, there is no ram voltage option in my BIOS. But there is an option called DDR2 overvoltage control and it has 4 values- +1,+2,+3,+4.

I've selected +1. So the effective ram voltage should be 1.8+1=1.9.

Ok, and then the ram frequency is 960MHz with the same timing.

And it passed 1 full cycle of memtest and 1h of OCCT mix test.

Is it good?

I'm just trying to find a moderate limit of the ram so that when I overclock my system further, I can make the ram speed constant and so that I'll have work with less variables.

Thanks Mr. Stroker.
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Sylar
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post #4 of 13
Thats a good start. I would try getting to 1066 with the same volts and timings you have now. Then tonight let it run memtest. Some ram is picky about voltage. Just abit over can kill some chips others dont mind.

Also dont expect a huge gain I have heard that the difference between 800 and 1066 is only about 5-10% in real world uses.
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post #5 of 13
Thread Starter 
Haha man I know. But I'm doing it just to turn the variable into a constant during cpu overclocking, not for performance increase.
I'm doing as you suggested. I'll let you know the result tomorrow. Thanks for your help mate.
Sylar
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Sylar
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post #6 of 13
Bump the voltage just one notch at a time.

Best way to prevent RAM from messing with your CPU overclock is to run the RAM at a 1:1 ratio to the FSB till you hit your CPUs max frequency, then start OCing the RAM.

Yea I'd let Memtest run for at least a few hours or better yet overnight. If you get 0 errors then you're good to go!
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post #7 of 13
Thread Starter 
But, after overclocking the ram, how to adjust the timing?
Sylar
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Sylar
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post #8 of 13
your not going to get better than 5 5 5 18
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post #9 of 13
Thread Starter 
I cannot get over 1000 MHz with 1.9v with 5-5-5-15.

But I don't want to increase vdimm.

I'm happy with it.

Is there any chance that the increased vdimm could reduce the life of the ram significantly?
Edited by tusku - 12/14/08 at 9:15pm
Sylar
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Sylar
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post #10 of 13
Quote:
Originally Posted by tusku View Post
I cannot get over 1000 MHz with 1.9v with 5-5-5-15.

But I don't want to increase vdimm.

I'm happy with it.

Is there any chance that the increased vdimm could reduce the life of the ram significantly?
There is the chance. What is the ram rated for? Some ram is rated by the maker for like 1.8-2.0.
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