Graphics problems

[rattkill]

Hi

I've recently replaced my motherboard, which was broken with a second hand one. At the same time I also replaced the power supply. Since then when playing games the graphics are really jittery. Can anyone help?

[Chris]

Jittery games would be due to insufficient processing power, either in the form of graphics card, processor or memory. Did you also change one of these?

[cahekac]

Use to have similar problem, was wrong power supply. What is your Pc specification?