[SOLVED] I added a second RAM stick to my custom gaming pc and now it is slower than ever

[Ethan K-B]

So I have been having some serious issues with performance of my high end custom gaming pc where everything is slow and i am getting around 2kb/s speed when copying and pasting files internally. Today I bought a second RAM stick (same model) and put it in and now my computer is running slower than it has ever run before. Why? Here are my specs. https://pcpartpicker.com/user/epjkb_games/saved/#view=6YCQZL

 

[Ralston18]

For two memory sticks (RAM) you should purchase a dual set.

I.e., 2 x 8GB RAM sticks. AKA "kit".

Check the motherboard's User Guide/Manual/Specs for supported configurations and install accordingly.

 

[Ethan K-B]

For two memory sticks (RAM) you should purchase a dual set.

I.e., 2 x 8GB RAM sticks. AKA "kit".

Check the motherboard's User Guide/Manual/Specs for supported configurations and install accordingly.

Sorry I thought it was implied with what I said that i bought the same ram stick. And Is checked the motherboards user guide and installed the ram in the recommended location, but its still slow.

 

[Ralston18]

"Same ram stick" is not the same a dual/matched set.

E.g.:

https://www.crucial.com/usa/en/what-is-dual-channel-memory

https://www.quora.com/Do-you-need-d...dual-channel-using-an-appropriate-motherboard

 

[PC Tailor]

As Ralston18 is stating, RAM modules are only guaranteed in the form sold (from the same pack). So it's a 50/50 gamble whether a new set of modules will work with the old. This is because the manufacturing of the modules changes frequently, making them the same make/model/timings is irrelevant. That is just a way to try and minimise potential conflict, but not eliminate it.

 

[lynx1021]

I have seen them change the chips from low density to high density and use the same module number. You can create a bootable ISO CD or USB Memtest 86 http://www.memtest86.com/technical.htm and test them overnight. CPU-Z or Speccy will tell you info about what your ram is doing.