Is it possible to put DDR1 RAM sticks of different frequencies at the same time?

Question

RAM

At home there is an ancient computer that I want to bring back to life. It had 2 memory sticks (256 MB + 512 MB), which, as it turned out, operate at a frequency of 333 MHz. I bought another one for 1 GB, but its frequency turned out to be 400 MHz. Can they be put on the same motherboard? The board supports both frequencies and has two paired slots for RAM.

Answer 1

It is possible, but it will work at the lowest overall frequency, i.e. 333 MHz

Answer 2

On many ancient computers, the bar with a lower frequency is better to put in the first slot. For greater confidence in stable operation, you can set a fixed value in the BIOS.

Answer 3

As Mear correctly said, they will start at the lowest frequency. Most likely, it doesn’t even make sense for you to try to start the old bars at a higher frequency than the standard one, you will see an increase only in synthetic tests, and in real use, more memory will give you more comfort in work.

Answer 4

I overclocked 333 bars to 400+ MHz, without raising the voltage. So it will most likely work. But they may not earn, it depends on a lot.

Answer 5

I saw a computer, where in each slot there was a memory of a different frequency. I don’t remember at what frequency it ended up working, but I remember that the result surprised me very much.