AGP 8x: Where Is The Advantage?

We undertook a small investigation trying to answer the question: what are the advantages of AGP 8x? The testbed was different this time. We used ABIT IC7 mainboard (i875P chipset), Pentium 4 2.4C (800MHz QPB, Hyper-Threading) processors, 512MB PC3200 memory onboard. The system worked in Microsoft Windows XP. We used ver.3.4 Catalyst drivers. Here are the results: