Can I add more ram?

I have a compiuter with these parameters:2 rams 128MB Pc 100,Motherboard QDI Advance 10T described as follows: System Memory
Three 168-pin 3.3V PC133 DIMM sockets
Support up to 1.5GB SDRAM
Support 66/100/133MHz Synchronous DRAM and 66MHz EDO DRAM
Can I add a 512 MB SdRam PC133 at the third slot to increase my system memory.I'm afraid that my compiuter will hang up if I use both 128MB Pc100 sdram and 512 MB Pc133.Can you help me with an advice.

 

You can use the 512MB & 128MB sticks together.
Before you remove or install memory unplug the computer & push the on button to dissapate stored electricity.
the motherboard may be picky about which slots the memory sticks are in so it may take rearranging them a few times to get it to work right.

 

yes you can but the 512mb chip will only operate at 100mhz. but it will make it a little faster