Can we connect different brand of RAM in same PC

The problem that happens when we connect two or more, different brand of RAM or different size of RAM or different frequencies in a same PC is called FREQUENCY MISMATCH. This effect is not found most of the time immediately when we connect and power on the PC. This does not give any RAM beep to warn you. When there is a mismatch we cannot boot the OS properly, cannot copy files from one location to another, cannot compress or decompress files, and cannot run application that requires RAM resources. Of course this will show increase in size after connecting, but know that you are going to damage your RAM.

The cause for this problem is the RAM cannot withstand the operating frequency of each other as each RAM will produce an error while working. This varies with manufacturer and when this exceeds the limit, the RAM chip gets damaged. This slowly develops and at a stage creates trouble.

I myself practically tested this effect with two different size of RAM (128MB+64MB) showing 192MB, I could use the PC for about three months without any problems but later the OS crashed. I tried loading new OS, but it failed to install. Then I found that one of my RAM (64MB) developed unrecoverable damage in it.

Even after knowing this problem I made a mistake. In my office I connected four RAM of same frequencies, same size but different brands. For one week only the PCs were stable and I got the same annoying symptoms. Then when I tested I could find a RAM damaged internally and giving problem in performance. Please protect your PC without damaging hardware. So guys do not try this at home and cause damage to your loving PCs.

Having a single RAM module is OK but you might lose certain performance like dual channel mode. When buying two or more RAM for a single PC, see that you get the similar RAM delivered in the SAME BATCH. This will avoid any problems regarding the Frequency Mismatch.