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Please define an artifact

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#1
Could someone please define exactly what an artifact really is? I realize they are errors that form when overclocking, specifically with video cards, and I just want to know exactly what they are and how they form.
 
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#2
I may not be answering 100% on this, but from what I have gathered, it's basically a block of pixels that have not been/falsely rendered by your video card. Generally caused by high overclocks/heat.
 
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#3
Oh trust me, you'll know when you see them :). When the video card is overworked for whatever reason, it might fudge the screen a little bit. This fudging can be seen as dots, shape deformations, or just plain bars through the screen.
 

D_o_S

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#4
Unwanted/unexpected image info/distortion...

Um... yeah, you'll know them once you've seen them...
 
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#5
or just other pictures on some things maybe like green black i guess you always know when you have an artifact
 

W1zzard

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#6
i would say for our context it is a single or multiple pixels in video output that are rendered differently than they are supposed to, caused by a hardware issue being either overclocking or other defect. it does not include software rendering errors, driver or game bugs (which i would call rendering glitch).

you will recognize them when you see them
 
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#7
Atitool will show you what a artifact is if you dont know from the excellent comments from previous users and the w1zzard!

Hes the man who wrote the software!

http://www.techpowerup.com/downloads/341
 

Track

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#8
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#9
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#10
0o w1zz rulez but ^^ fell free to post your opinin