Using a FX-5800, with P-IV2.4 C and Abit IS-7E, previously was working great and w/o any such mentioned of artifacts, all with a HEC300watts PSU. Therefore, I wondered now since I have tried to seek RMA from the shop that I've bought it. Regrettably, when they insert it into their system, the card was not showing signs even while booting in as vice versa to mine, from boot in, even in BIOS menu, there can be visible tearing and loading into windows will have garbage screens' icon etc. Then, the shop suggested using 3d Mark 2001SE to test it, after completion, there isn't any of artifacts. Thus, I have to returned with my gfx card. While, installing again onto my system, the same mentioned problem arise. Therefore, I'm curious now whether how the shop cannot detect this artifacts while in my system there is, so I would like to ask, whether a PSU plays a major part in resulting in such cases of artifacts too? Thank you.