1GB ddr2 800 Mhz and 2GB ddr2 1066 Mhz

ulysses35

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by putting two different speeds of RAM on a mobo is not the bets option. By doing so your pc will run all your memory at the slower speed.

You can try and force the PC to run your RAM at a higher speed by overclocking - which depending on the brand of memory you have can be achieved.

Be warned though cheaper brands dont handle overlcocks very well.
 

gsaplontai

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Sep 24, 2009
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Thank you very much Ulysses35
 

gsaplontai

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Hi sportsfanboy,

Thanks for help.

The 2gb module is an Kingston hyperx DDR2 1066 Mhz and the other one I is from Qimonda PC 6400, some cheap module. I don't think it's a good ideea to overclock. What do you think?

Kind regards,

gabriel
 

sportsfanboy

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Yea that pc 6400 stuff most likely wont overclock very well or at all. Your most likely gonna have to runn both pairs at the slower speed of the two, which is ddr2 800.

Start off by running them at ddr2 800 and see how it goes, perhaps giving them a run or two on memtest. If you pass, you can slowly increase the frequency until you get an error, at that point you can either back it off to the last known stable setting, or you can try upping the voltage a little.
 

peteg

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Frankly, you're better off NOT USING the 1GB of 800 memory. Running with 2GB of 1600 memory will beat 3GB running at 800 hands down.