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What Voltage for Ballistix PC6400?

post #1 of 27
Thread Starter 
I'm getting my 4GB of Crucial Ballistix PC6400 RAM today, what voltage should I have my RAM at, I think the defualt for my board is 1.8v (correct?).

I think that Ballistix runs at 2.1v (correct?) Do I need it at 2.1v?

Thanks!
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post #2 of 27
I think the rated V to run @ stock speeds is 2.2V.

EDIT: Here you go: http://www.crucial.com/store/partspe...2KIT12864AA804
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post #3 of 27
Thread Starter 
Thanks a lot dude!

So, I'd have to set it to;

+0.4v?

It's flashing red in my BIOS though, I should just ignore that, Yeah?
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post #4 of 27
Your manual will tell you what that increase in voltage will do. If I were you , I'd want to read it there, not here.
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post #5 of 27
I have to set it to +.4v on my Gigabyte as it defaults to 1.8v. I would make sure you have good airflow as these will get a bit warm when all 4 slots are full. It shouldn't be too bad on stock voltage. If you are running lower speeds, you may be able to get them stable at 2.1v.
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post #6 of 27
This is the SPD from the memory you bought.

Attachment 67944
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post #7 of 27
Well, I just looked through the manual and it states that it sets the dimm voltade to the requirements of the dimm. I don't think it will automatically set it to 2.2v, so I recommend leaving it auto, boot up and check the voltage. It should show whether it is 1.8v or 2.2v. My DS3L set them to 1.8v if I left it on auto. Obviously, you don't want to increase it by 0.4v if it already sets it to 2.2v, lol.
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post #8 of 27
Thread Starter 
That SPD picture you posted JPH, Shows 1.8v and 2.2v, which collum is the actual voltage that the RAM is set to?

Can I set the RAM voltage to Auto, and all the others manual?

Thanks for the replies guys
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post #9 of 27
Quote:
Originally Posted by Kornowski View Post
That SPD picture you posted JPH, Shows 1.8v and 2.2v, which collum is the actual voltage that the RAM is set to?

Can I set the RAM voltage to Auto, and all the others manual?

Thanks for the replies guys

There are 2 basic standards for RAM. jedec and epp. (enhanced performance profile) It is a name given to performance RAM (obviously) Most epp RAM runs at 2.2v and most jedec at 1.8v. Since Ballistix are considered epp, they run at 2.2v.

I don't know a lot about it, but I have heard that epp was a marketing gimmick that stuck. Most RAM manufacturers list what they want you to run for voltage. It is usually anywhere between 1.8v-2.2v, with 1.8 and 2.2 being the most common. I have seen some RAM rated for 1.9v or 2.1v as well. It is always best to go by the manufacturer. Some have said that 2.2v is too high, even if that is recommended by crucial. I, personally, go with what the manufacturer recommends and haven't had any problems.

(besides, Crucial has a lifetime warranty)


here you go:
http://en.wikipedia.org/wiki/Enhance...mance_Profiles
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post #10 of 27
I had ballistix (ddr2 800) running 5-5-5-10 @ 2.05v at 1052mhz. So you don't necassarily have to run it at stock 2.2v. If you tighten the timings a higher voltage is recommended. But I prefer running at a higher frequency.
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