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?
Yes, it is possible to use two RAM sticks with different speeds at the same time, but your RAM will work at its slowest speed. In some cases, this may result in compatibility issues, but such instances are very rare. To avoid any surprises, it's best to do a complete test of your RAM with MemTest86 or something similar.