Could ram be responsible for artifacts?

[Silver47]

I've got 2 x 8gb of ddr3 ram in my system, running at 1333 mhz with cl 9 timing. I recently sold my graphics card so I'm running integrated graphics of my 4770k at the moment. Wanted to hop into a quick game of cs:go today, but for some reason the game artifacted like crazy, like gpus usually do if you oc the memory way too high. I removed my oc and set literally everything in the bios back to stock, but it didnt help. The weird thing is that I could run benchmarks like Unigine Valley and other old games like Empire: Total War and Half Life 2 without any issues. Now since there isnt a graphics card in my system at the moment all I have left to blame is the ram. Could the memory actually cause these artifacts in some games while working just fine most other times?

Also ist there a good tool to test ram stability?

Thanks in advance!

[Jurrunio]

raise the memory voltage or drop the memory frequency, see if it gets better