It does have Tiger on it and its pretty quick.  Maybe a new video card would be better, im sure I'll get that next. 
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PowerMac G4 Digital Audio-533MHZ-896MB RAM-40GB-80GB-DVD Dual Layer RW-GeForce2-10.4.9-Painted White
iBook G3-500MHZ-256MB RAM-DVD Rom-10GB-10.3.9