If I try to upgrade my memory from 2.5Gb to 3Gb, my PC will not work at all, despite the fact that I am using PC2100 memory, and the memory is recognised by BIOS. I have tested my 1Gb memory modules, and they are good. Any suggestions as to what the problem is?
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This motherboard supports DDR200/266/333 SDRAM The memory needs to match one of these numbers so: DDR200 DDR266 DDR333 one of these types will work This motherboard will support a maximum of 4GB of memory.
*********** board is Asus old p4 Mother board.It supports maximum 1GB RAM of DDR 400(DDR1). According to your post your computer having only one 512 MB working RAM. If you want good purformance you can upgrade your computer by purchasing another 512MB DDR400 RAM and install it on another RAM slot.If your computer have only one working RAM slot,you can purchase 1GB DDR400 RAM & install it on older RAM place. I think it solves your problem.if you have any problem come back with more information. I will try to assist you more accurately.
you quote one of your memory sticks as being pc 2700 when earlier in your text you qoute pc3200.
Firstly pc 3200 is 400 mhz clock speed memory.Secondly, pc 2700 is 333mhz clock speed and you acnnot mix the two on the same board. Thirdly does your board support 3ghz anyway. If you are running a board at 400mhz, pc2700 memory will not run at 400mhz.
Solution, take out the pc 2700 memory and all will be well.
From Asus tech:
3 184-pin DIMM slots for PC1600/PC2100 DDR SDRAM Supports up to 2GB memory No ECC supportThis is only compatible RAM so make sure your new chip is PC1600 or PC2100. If you mis the 2 it the faster RAM will run at the slower chip speed. Hope this helps.