compatible?

[wmbeau]

Currently I have a Shuttle Mboard VIA P4 X400, with 1 stick of Corsair CMX512-3200 C2, operating with Windows XP home. I added a stick of Corsair VS512MB400. When I booted the first message was the register changed, then my screen resolution changed. Then got random error messages. Is it a compatiblity issue or bad RAM? Are there any test I can do? Thanks

[RAM GUY]

First thing I would not suggest mixing memory on any MB. And this chipset only officially supports DDR333. So you might try and set the timings manually to Cass 2.5-3-3-7 and set the memory Frequency at DDR333 and install the modules in slots 1-3 and set the Dim Voltage to 2.7 Volts and then test them with http://www.memtest.org

[wmbeau]

First thing I would not suggest mixing memory on any MB. And this chipset only officially supports DDR333. So you might try and set the timings manually to Cass 2.5-3-3-7 and set the memory Frequency at DDR333 and install the modules in slots 1-3 and set the Dim Voltage to 2.7 Volts and then test them with http://www.memtest.org

 

This is what we have done to this point. We have the original (I called it CMX512-3200C2) but it was CMX512-3200C2PT, aded 1 stick CMX512-3200C2PT and one stick of CMX512-3200C2 the 2 sticks of ***C2PT work fine together, when the C2 is added we get errs. what would you suggest to get all RAM running?

[RAM GUY]

Please test the modules one at a time with http://www.memtest.org. If all pass then you might try and set the memory Frequency to DDR266 at 2.8 Volts and see if they will all pass.