DDR2 Mobo Ram Mix

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Criso Antonov

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Apr 24, 2014
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i recently updated my pc but now i have a problem and im kind of scared can i mix DDR2 667MHz 1.65v and a DDR2 667MHz 1.8v can i get them working both ?
 
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MrCommunistGen
Ideally you should use 2 sticks of RAM that were purchased as a matched pair or at least match each other as closely as possible.

It will depend a little bit on exactly what RAM and motherboard you are using but in some scenarios it is possible that what you have COULD work. You'd need to have all the RAM settings match the "worst case" spec for each stick of RAM. Also, even if that combination of RAM boots and is stable, it is not a recommended configuration.

Specifically you'd want to chose the slowest timings from the slower stick, but you'd also likely want to chose the voltage from the higher voltage stick. NOTE: Running 1.65V RAM at 1.8V may burn it out quickly or can at least decrease its lifespan.

Thought process...
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MrCommunistGen

MrCommunistGen

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Ideally you should use 2 sticks of RAM that were purchased as a matched pair or at least match each other as closely as possible.

It will depend a little bit on exactly what RAM and motherboard you are using but in some scenarios it is possible that what you have COULD work. You'd need to have all the RAM settings match the "worst case" spec for each stick of RAM. Also, even if that combination of RAM boots and is stable, it is not a recommended configuration.

Specifically you'd want to chose the slowest timings from the slower stick, but you'd also likely want to chose the voltage from the higher voltage stick. NOTE: Running 1.65V RAM at 1.8V may burn it out quickly or can at least decrease its lifespan.

Thought process: Assuming the timings are different there's no guarantee the slower RAM can operate at the tighter timings of the faster stick. There's also no guarantee that the higher voltage RAM will function correctly at the lower voltage.

Regardless, if you try it, YMMV. If you try it and something breaks, you were warned.
 
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