I have two RAM sticks in a motherboard, one has 2400mhz speed and the other is 2600Mhz speed will the two RAM sticks work perfectly without hindering the performance of each other either in crypto mining or just using the PC for task work?
In most cases, this will not create problems for mining, if you do not mine monero on the processor. The memory frequency does not have much effect on the mining of the main coins for video cards. My mining farms have DDR installed and some have mixed memory of 1333Mhz and 1600Mhz.