Will higher voltage RAM run on a 1.8V board?

January 21, 2011 at 14:56:39
Specs: Windows XP Pro SP3, 3.0 GHz Quad / 2 Gig
Will higher voltage RAM run in a motherboard calling for 1.8 volt RAM? The board is a Gigabyte GA-G41M-ES2L. The board calls for DDR2 1.8V. Thanks.

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January 21, 2011 at 15:43:54
Most boards allow you to tweak the voltage settings. How much depends on the board.

My opinion of that practice is that the manufacturer is juicing the chips to gain better specs.

IMO you should buy RAM that actually meets JEDEC voltage standard of 1.8v for DDR2. That way, you can juice it yourself to overclock the RAM, if you have the desire to.

Look at the link below. All the RAM listed in that link runs at 1.8v. You can filter further to select the speed, capacity, etc.


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January 21, 2011 at 15:58:22
It may or it may not work in your board. You should manually set the RAM voltage before the RAM is installed or the system may not boot. Why would you want to use higher voltage RAM anyway? The JEDEC standard says that ALL DDR2 should run at 1.8v. If the RAM you have (or are considering) is rated for 2.0v, 2.1v, 2.2v, it's probably because it doesn't conform to the JEDEC standard & needs the higher voltage to remain stable. Or it could be lower rated RAM being passed off as higher rated RAM. For instance, DDR2-667 being sold as DDR2-800.

If your CPU FSB speed is 1333MHz, you should run the RAM at 667MHz. The only reason to have faster RAM would be if you plan on overclocking, even then, there's probably no need for anything faster than DDR2-800.


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January 21, 2011 at 16:48:57
Hi. I'm running DDR2 667 mhz now. I have my CPU overclocked ( 9 X 333 ). My max FSB is 1333. Is there any benifit to get DDR2 800 Mhz RAM and run it at 800Mhz? Thanks for the replies.

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January 21, 2011 at 17:45:44
"Is there any benifit to get DDR2 800 Mhz RAM and run it at 800Mhz?"

None whatsoever, not unless you plan on overclocking the CPU to 1600MHz FSB (400MHz frequency).

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