Can you run two different DDR2 kits with different voltages?

[Addikt]

So I just picked up some new memory, Mushkin 4GB (2x2GB) DDR2 PC2-6400 5-5-5-18 Silverline (996557). After looking at the specs, I realized that these modules are set up to run at 1.8v.

The problem is that I currently have OCZ 2GB (2x1GB) DDR2 PC2-6400 4-5-4-15 Platinum *EOL modules installed and they are running at 2.1v.

So my question is, what voltage setting should I run them at? Also, since the timings are different, could I squeeze 4-5-4-15 timings out of the Mushkin Siliverline if I run both sets of modules at 2.1v, or do I risk burning out my RAM?

Thanks.

 

[Addikt]

My mistake, I completely spaced and realized that you can only run 4GB of RAM on a 32-bit OS. However, I still would like to know what voltage to run these things at? Currently they are in a system running an Intel C2D E6600, do I run them at the rated 1.8v, or can I up the voltage to get tighter timings? Also, I've been told that timings don't really matter for intel chips and that I should overclock the sticks to match up to my 1068 MHz FSB clock.

I'm completely confused at the moment as to what I should do.

 

[tomt4535]

You probably have to run the sticks at the rated voltage to get the rated timings. You could probably run the Mushkin memory at the higher voltage, but if it isn't rated to that higher voltage, you run the risk of burning them up. Will it work, probably, but you run a risk of damaging the modules and voiding your warranty. I say run the sticks at what ever they are rated to run. You can overclock them if you want, but make sure you know what you are getting into before you do it.

 

[john3850]

I would loosen the ocz timmimg to 5 5 5 18 and drop volts 1.9 -2.0 then test
Then set mushkin to the same voltage
I got 2x2 GSkill rated 2v.raised to 2.1v @1066 + 2x1
ballistic rated at 2.2 volts dropped to 2.1v.@1066
Balistic would run fast timming with 2 sticks but not with 4 sticks.
2x1 always ran faster then 2x2 and 4x1.