'Cuz I'm about to buy one at a great price but the guy selling it doesn't know if it is an Early or Late 2005. The machine has no GPU nor HDD, so he can't test it by himself. Is there any identifier on the case so that I can know? Maybe the serial number? Thanks for reading. I'm topping it out with a Quadro FX 4500 and RAID 0 HDDs, and super happy about it. 4GB RAM are fine for Tiger, I guess.